/ham/ - Amateur Radio General

[Anonymous No.1777491]

Digital LID Edition
Previous Thread >>1768446

>New to /ham/? Read this!
>n00b FAQ
https://wiki.cybsec.io/index.php/HamFAQ
ftp://ftp.cybsec.io/pub/Cyberpunk/Tech/Radio/radio_FAQ_Preview11.htm

>Online Practice Tests:
http://aa9pw.com/
https://hamstudy.org/
https://hamexam.org/
https://www.laurelvec.com/

> Real-Time Propagation Data
http://prop.kc2g.com/

>Space Weather
https://www.swpc.noaa.gov/communities/radio-communications

>WSJT-X 2.1 User Guide
https://physics.princeton.edu/pulsar/k1jt/wsjtx-doc/wsjtx-main-2.1.2.html

>FT8 operating guide
https://www.g4ifb.com/FT8_Hinson_tips_for_HF_DXers.pdf

[Anonymous No.1777492]

[Anonymous No.1777493]

>>1777491

[Anonymous No.1777500]

I'll take one of these.

[Anonymous No.1777501]

. . . and one of these

[Anonymous No.1777502]

. . . maybe this

[Anonymous No.1777504]

Finally, don't forget

[Anonymous No.1777508]

>>1777491

[Anonymous No.1777540]

Just got my tech, and i'm wanting to do some 6m digital. am i correct in assuming that a yagi or MOXON would be my best choice try for some DX?
It seems a lot of people on other bands use verticals antennas for DX because of the low take off angle, could i build something like that for 6m?
I have found plans for a ground plane antenna, but these seem to be good only for local FM.

Any help/ideas would be greatly appreciated

[Anonymous No.1777541]

Alright, I've fucking had it. I've built 3 radios, all in different bands, different complexities, different antennas, tuned my antennas and everything, and haven't heard a peep.
What's the cheapest way I could get a waterfall/spectrum diagram on my laptop? I need to make sure my apt isn't just drowning in noise. rx only is fine

[Anonymous No.1777545]

I did this, but it doesn't work.

As you can see, this "Sequences_vectors" python embedded block that I created, has a list of bit sequences and it uses a for cycle to select each sequence and then return them to the next block (Repeat block) to go on in the flowgraph.
I did this to simulate a "Vector Source" block(that takes a _single_ list of bits), but that takes more than a single sequence of bits (in my case, as you can see in the code, there are three sequences).

I'd like to transmit each of these three sequences of bits. How can I do?

If I start the graph, it reports errors, I think because I can't return list but only single int.

In fact, even if it started without errors, I guess that the python embedded block wouldn't behave as expected. I think it would return one list and stops, since the "return" only works one time and not more than one (so the other two sequences can't be "returned"). So I think my code wouldn't work.

[Anonymous No.1777548]

>>1777541
RTL-SDR of course

[Anonymous No.1777582]

>>1777502
Why not this?

[Anonymous No.1777585]

I am using "Vector Source" block. As you know, it's used with a list of ints. Of course, if I try to use more than a list, so if I use a list of lists, it gives me errors.

I also tried writing "[x for x in sequence]" in "Vector Source", but it doesn't work neither (same error of before).

Obviously if I write "sequence[0]" to select only the first sequence, it works, with no errors.


So my question is, how can I use more lists with "Vector Source" block?

[Anonymous No.1777663]

>>1777548
build yourself a filter and hook that up to rtl-sdr you mongoloid person of great character.

[Anonymous No.1777669]

>>1777582
>Why not this?
I don't know, my brain had an insufficient volume of coffee supplied caffeine at the time.

[Anonymous No.1777691]

why

[Anonymous No.1777706]

WHY

[Anonymous No.1777713]

mother of god

[Anonymous No.1777843]

what would be the best way to make a mobile repeater with a couple HT's or baofengs?

[Anonymous No.1777856]

wtf is this at 8 MHz?

[Anonymous No.1777924]

>>1777843
Break the antennas off at the connectors. Then feed them up your ass, followed by the HT bodies. Afterwards, find the highest bridge or building and jump off of it, headfirst optimally.

[Anonymous No.1777934]

>>1777924
what way should the antenna be oriented out of my anus?

[Anonymous No.1778025]

>>1777843
US$16.99 - In stock

[Anonymous No.1778149]

So now that china economy and export is officially kill what cheap handheld radio is the goto recommendation?
pic related
stocks depleted, prices tripled

[Anonymous No.1778163]

I'm a noob. What's the purpose of "Rational Resampler" and "Low pass filter" in GNURadio? When should I use them?

[Anonymous No.1778173]

>>1778163
Oh boy https://www.quora.com/What-is-the-difference-between-a-low-pass-a-high-pass-and-a-band-pass-filter-with-examples

[Anonymous No.1778182]

>>1778149
vx-6r or check alinco and anytones stuff. anytone 878 is cool and does dmr and aprs.

[Anonymous No.1778186]

>>1778149
>prices tripled
stupidity quadrupled

[Anonymous No.1778187]

DX contest today and tomorrow. All the supposedly dead amateur HF bands are lit up.

[Anonymous No.1778214]

>>1778186
Kek. Order it. See when it arrives.
Protip: IF things go back to what they were, I'll say at least 4 to 6 months.
No meaningful quantites of anything are beeing exported from china, havent you heard? Even YIT manufacturing around the world is already fucked as they rely on chinese shit.

Now try and find it from a european or american seller

[Anonymous No.1778216]

>>1778149
seems fine in the US

[Anonymous No.1778219]

>>1778182
Anytone AT-D878UV seems to be literally the same as the uv5r (even same chip) for 170€
Yaesu VX-6E on the other hand looks like a chad - for that price I'd probably go with a battery rigged mobile setup in a backpack though.

[Anonymous No.1778222]

>>1778219
they can be had for like 150 if you snipe ebay. refurb on gigaparts like 175. its expensive i know but all this shits gay and expensive.

[Anonymous No.1778251]

Good book recommendations? Building antennas, basics of electronics - something comprehensive and short would be ideal

[Anonymous No.1778375]

>>1778251
>something comprehensive and short

[Anonymous No.1778382]

this general is garbage. bunch of questions, nothing but bullshit /b/ tier responses.
no building,or projects being talked about.

>what handheld radio can i buy that does all bands and all modes i want to know when the military and fema is coming for me i dont want to take the time to learn anything just sell me a radio that does all this and oh wait i want this to be under 30 sheckles

[Anonymous No.1778423]

Guys guys how's my signal coming in? I'm having trouble with my rig.

[Anonymous No.1778478]

>>1778423
1 3. Stop even trying.

[Anonymous No.1778502]

number stations are fun but I always wonder if I'm getting mkultra'd while listening.

[Anonymous No.1778705]

>>1778382
shut the fuck up, retard

[Anonymous No.1778719]

>>1778423
this is what most radio guys sound like here, too.

[Anonymous No.1778765]

Ever seen the Radio Intelligence Division IRL?

[Anonymous No.1778798]

>>1778382
Then go back to rebbit. You're clearly not doing your part to help make a better general.

[Anonymous No.1778810]

Nobody catching any sweet DX this weekend? I got 9 countries this morning on 15m.

[Anonymous No.1778834]

>>1778810
ya boi we do https://www.youtube.com/watch?v=ikXH_l6IghQ

[Anonymous No.1778842]

>>1778834
>K1TTT
http://www.k1ttt.net/webcam/simple_combo_bare.html

[Anonymous No.1778966]

[Anonymous No.1779092]

>>1778966
The one on the right is pretty neat, any documentation?

[Anonymous No.1779143]

>>1779092
The meander looks magnetically self defeating to me.

[Anonymous No.1779163]

>>1777856
Your computer.

[Anonymous No.1779214]

>>1778966
Something tells me the gayntenna on the right will lliterally fly as soon as some passing wind will enjoy the sail.

[Anonymous No.1779939]

>>1777491
What's the best cheap HF handy talkie for me to recommend to friends who are testing for general? We want to get the same ones for fun

Please recommend HF HTs

[Anonymous No.1779941]

>>1779939

Xiegu x5105

[Anonymous No.1779948]

>>1778798
And you ARE?

[Anonymous No.1779974]

>>1779948
Being less of an obnoxious twatwaffle. No one cares about your blogs, or your bed sores. Go bitch somewhere else (perhaps discord with your fellow trannies).

[Anonymous No.1780017]

Ordered a cat cable for my icom. Finna do some rtty and freedv.

[Anonymous No.1780063]

I seem to have maxed out around 73 countries on my DXCC on digital with my vertical wire antenna.
I don't have room for a crazy tower or full sized directional antenna.
W6LG (YouTube personality) just moved to a small home due to health issues and was going to experiment with stealth HF DX antennas, but I'm pretty sure he's dead.
https://www.youtube.com/user/jimw6lg

[Anonymous No.1780078]

>>1779939
bitx40
60$
8watts
7mhz
+ 12v lithium battery

>>1779941
>670$
Thats not cheap

[Anonymous No.1780152]

>>1779939
>cheap HF handy talkie

[Anonymous No.1780166]

>>1779974
Wow, such a cunt like post.

[Anonymous No.1780209]

>>1780152
paperclip antenna for 80m

[Anonymous No.1780242]

>>1780209
Butterfly clip

[Anonymous No.1780293]

>>1780166
Not even astronomically close to >>1778382

[Anonymous No.1780488]

>>1780293
>what handheld radio can i buy that does all bands and all modes i want to know when the military and fema is coming for me i dont want to take the time to learn anything just sell me a radio that does all this and oh wait i want this to be under 30 sheckles

This is true though. Much like /out/ is
>How do i move to the woods and live off the land by batoning.

[Anonymous No.1780826]

anything i can do (ham related) with a small direct tv dish?

[Anonymous No.1780844]

Guys, I'm planning on making a SHTF ready radio completely from scrap parts. I know where to get almost everything, but the part I'm having trouble with is figuring out where to get a PLL chip. Any ideas? Or is making one from discrete and logic level components easy enough?

[Anonymous No.1780859]

>>1780844
You want a 74HC4046 or something similar. Try DigiKey or Mouser if you need parts. As far as it being easy to make your own PLL circuit, no not really; depending on how stable you need it to be. Also, anything you make will be mediocre compared to the commercial part.
>SHTF radio
As a hobby toy sounds fun, but if you want a real SHTF option; get a COTS radio and store in a Faraday bag. There won't be time for you to sit and make a radio which may or may not work, with no internet to help you build the thing.

[Anonymous No.1780866]

>>1780859
The point is to have parts for repairs, the build would have to be done before anything happens.

[Anonymous No.1780869]

>>1780826
You can cut a slot in it to make a stealth UHF antenna.
https://www.qsl.net/w5crc/Training-Link/STEALTH%20DISH%20ANTENNA%20PRESENTATION.pdf

[Anonymous No.1780891]

>>1780859
>hobby toy
Transmitting in the post electric time..

[Anonymous No.1780892]

>>1780869
that's cool

[Anonymous No.1781041]

Perhaps of interest to a few here:
>The secret Soviet radar hidden in Chernobyl’s shadow
https://www.bbc.com/reel/video/p0864g3p/the-secret-soviet-radar-hidden-in-chernobyl-s-shadow
>In a remote forest, a few kilometres from the Chernobyl power plant, the huge Duga-2 radar tower stands as relic of Soviet mismanagement.

[Anonymous No.1781727]

Books /ham/ recommends?

[Anonymous No.1781730]

Half the world knows about woodpicker

[Anonymous No.1781811]

>>1777492
>>1777493
Are you sure that's not just your neighbor overloading your frontend

[Anonymous No.1781848]

>>1777500
>>1777501
>>1777502
>>1777504
Something tells me your antenna forest is astonishingly vast.

[Anonymous No.1781849]

>>1777582
because it's four grands and demands a serious antenna.

[Anonymous No.1781864]

everybody wants the MJ64mh grid square

[Anonymous No.1781951]

>>1781848
>antenna forest
I was thinking of something like pic. related. I plan to move and I am looking for a place where I can field a proper antenna.

>>1781849
I have saved up a bit. The K4 is not the only rig in this price class.

[Anonymous No.1782099]

Woot, upgraded to general. Now the fun can really begin!

[Anonymous No.1782124]

>>1780488
>projecting this hard
How pathetic.

[Anonymous No.1782182]

>>1782099
Congratulations!
Looks like a comfy shack.

[Anonymous No.1782262]

>>1782182
Thanks, someday I'll actually organize it. Might try and pull off a AREDN dish, but being in an apt is pain and suffering (in college).

Also based Laurel VEC, FCC already updated my callsign.

[Anonymous No.1782265]

So I bought the Extra Class Book without realizing that the test for it doesn't encompass the other 2 classes. Kind of went off half cocked on the purchase. If im not mistaken, I think they have a new textbook come out when the question pool gets changed out, which will be June 30th for this.

So my question is, should I return this book if I plan on getting the extra class later on, after getting my technician and hopefully general licenses? Or will I absolutely need the new book that comes out in a few months for that higher license class?

[Anonymous No.1782266]

>>1782265
If you're not going to get your extra by June 30th I'd return it and grab the general book. Tech you can get from online exams (really you can get gen this way too).

[Anonymous No.1782267]

>>1782266
Thanks for the reply. I suppose I will see to it that I return it.

[Anonymous No.1782268]

>>1782266
On second thought though, would the next Textbook for the next question set be really that different though? I'm completely ignorant on this subject so I suppose I'll look more into it. But would it really be a waste to have that textbook on hand?

[Anonymous No.1782321]

>>1782262
How close is the nearest AREDN node?

[Anonymous No.1782348]

>>1782321
About 10-20 miles depending on which direction you pic. Going to be really pushing the dish, but worse case I'll just rig up some kind of mobile setup.

[Anonymous No.1782349]

>>1782099
congrats brother!

[Anonymous No.1782352]

>>1782268
I know for the gen enough changed to fuck me up on several questions. If you just want to learn the material then I doubt enough changes, but if you want to pass the exam you want to be also memorizing the exact questions.

[Anonymous No.1782364]

>>1782352
>I know for the gen enough changed to fuck me up on several questions
same. personally, im pretty stupid and need to learn hands on. reading something is not always enough for me to understand, i need to do it.
i dont think i ever would have passed if i didnt have time to fiddle around with radios and learn what everything does.

[Anonymous No.1782388]

>>1782364
I'm the same, but I took one of my last adderalls and spend six hours memorizing questions. I really hated the ones like "what frequency is authorized for rtty on the 80m band?" Like jesus I can remember what sections of the bands are gtg for gen, but breaking it down to the frequency groups for each type is just pure autism.

[Anonymous No.1782390]

What SSTV modes are best for shitposting memes?
Currently found Merlin 2 likeable - fast yet good quality. Is there something more suitable for anime pictures?

[Anonymous No.1782392]

Also, is there a good GUI universal programm for decoding/encoding many different digital or even analog modes?

[Anonymous No.1782462]

So what projects are you all working on?

I'm currently still researching setting up an AREDN node, and will probably get a signalink for FSK31; but, I'm curious what others are doing with their time!

[Anonymous No.1782546]

Was watching FMA brotherhood when I noticed that the artists actually seemed to have gave a shit. This radio has a variable capacitor, a few tubes, a speaker, a few meters, and a cap. Just the inclusion of the variable cap is really surprising from a tv show!

[Anonymous No.1782597]

>>1777500 >>1777501
A world map function is also nice.

[Anonymous No.1782809]

Anyone participating in world amateur radio day tomorrow?

[Anonymous No.1782826]

>>1782809
>Italy and France in lockdown, HAMS in front of their rigs 24/7
That can be funny.

[Anonymous No.1782834]

>>1782597
gimme 20 minutes and I'll reprogram the EPROM to show youtub--- no, 4chan, on the display on the right. Thanks, Yaesu.

(btw I recognize most radios are basically a PC sporting a radio card. They could just sell the radio card and some android app to tune it)

[Anonymous No.1782864]

>>1782834
Supposedly the K4 has a Linux computer but access to it will be strictly limited.

[Anonymous No.1782868]

>>1782864
let Hackaday or any other Linux enthusiast probe a K4 for a couple days and prepare popcorn.

>hurr durr hardware protections
Switch & Playstation hacks, anyone?

[Anonymous No.1782877]

>>1781727
Crystal sets to side band. It's free.
>>1782099
Way to go! Have fun!

[Anonymous No.1783061]

>>1782868
I know people would try. My point is that it would be far better if there were provisions for user made apps. A modern phone has a baseband part which is not user accessible, and an app part which is. Both usually have a DSP. Using a typical android platform such as Snapdragon, would have permitted such a solution.

there will be a steady stream of improvements in many digital modes, and it is inconvenient to wait for one company to add these. Of people would want to try new experimental modes based on the really nice RF side of the Elecraft line.

[Anonymous No.1783305]

>>1782868
The hardware protection is the price, and nobody will risk voiding the warranty to open it up to take pics let alone mess with it.

[Anonymous No.1783328]

>>1783305
Not sure this makes sense. After all Elecraft has stated K4, like the predecessors, will be available as kits. In that case it starts disassembled.

[Anonymous No.1783391]

I forgot my god damn feedline.

[Anonymous No.1783416]

>>1783391
On the plus side my stero wire antenna receives great. Didn't tx as I deliberately overcut for use with a tuner.

[Anonymous No.1783521]

>>1777491
I'm looking to buy a new shortwave radio since my current one just shit itself

What are some good recommendations?
Budget is about $150

[Anonymous No.1783535]

>>1783521
Anything you can try before buy.

[Anonymous No.1783554]

>>1783328
Then it's simply the fact that hams aren't willing to mess around with bus pirate and IDA Pro for thousands of hours.
Vodya consoles are crackes by unemployed soviet block teenagers with way too much time on their hands.
If it's Linux it will be probably possible to do it in an afternoon though, unless they actively make an effort to lock it down by disabling test points, encrypting firmware etc.

[Anonymous No.1783606]

>>1783328
I bet they know the K4 will be eventually hacked. Also, they probably lack resources to create multi-layer protections (like Switch Playstation etc).

Also, there's no point in throwing in a Linux board. Except if they really need to manage something more than a waterfall and a set of menus. (Well, maybe mr.Elecraft just succumbed to the usual horde of hams demanding insanely stupid features: telling them "future apps herp derp" would make them instant buyers with zero regrets).
PC programs like Fldigi and Direwolf are the absolute state of art. K4 native apps would work without the need of an audio cable to the PC soundcard input, but without the massive horsepower+memory of a regular PC.

Then, there's the fact that support for apps will require serious compromises. You don't want an app to wreck your hardware, erase configurations, show weird things on the display, etc. Vetting an app is ludicrously complex, even for giants like Google and Apple who put in place a large number of automated checks and own the software infrastructure.

If I was mr.Electraft, I would have put a fast interface (just like SDR's) and kept the K4 firmware on ROM (and given mr.Fldigi a couple grands and a free K4 to have him add support to his software).

[Anonymous No.1783619]

>>1783521
ccrane skywave ssb?

[Anonymous No.1783703]

A closer look shows the K4 will have a non-ARM Linux computer. Not sure about the DSP yet or what, if any, GPS functionality it will have.

>>1783554
>Then it's simply the fact that hams aren't willing to mess around with bus pirate and IDA Pro for thousands of hours.
Some do:
https://www.la1k.no/2020/01/08/flexradio-maestro-hacking-part-1-public-wifi-and-wallpapers/

>>1783606
>I bet they know the K4 will be eventually hacked. Also, they probably lack resources to create multi-layer protections (like Switch Playstation etc).
Not sure. The Elecraft people are traditional ham guys, the digital crowd comes from a different world from theirs.
>Also, there's no point in throwing in a Linux board.
Well, something has to control the image, menus and the DSP work plus remote control and firmware upgrades.
>Except if they really need to manage something more than a waterfall and a set of menus. (Well, maybe mr.Elecraft just succumbed to the usual horde of hams demanding insanely stupid features: telling them "future apps herp derp" would make them instant buyers with zero regrets).
It is not clear what they have in mind. Some of their older radios have CW decoders but I am not sure how good they are or if that software is made in house.
>PC programs like Fldigi and Direwolf are the absolute state of art. K4 native apps would work without the need of an audio cable to the PC soundcard input, but without the massive horsepower+memory of a regular PC.
It would be handy to be able to do the usual digital modes without a separate PC. As a non-portable transceiver they can afford to add more stuff inside to keep the shack tidy. For a portable K4x they would need to think more about power consumption and probably ditch the PC for an ARM or RISC-V platform.

[Anonymous No.1784061]

I've got a cheap RTL-SDR I was thinking of setting back up up to scan specific ranges and record when it finds something and moves on to scanning when audio is lost for a period of time. With everything going on there is probably some interesting chatter out there but I don't really have the free time to sit and scan manually.

Is there any good SDR software to preform this or an ad on to SDR#?

[Anonymous No.1784065]

ACOM is about to drop some serious stuff on the market in the following months. Keep your eyes peeled.

[Anonymous No.1784066]

>>1784061
I don't know about interesting, all 20m is, is talk about the wuhan virus.

[Anonymous No.1784083]

>>1784066
Well, "interesting" might not be the right word, but more to see in yet another way what the general vibe of my area is like beyond internet communication.
I'm under no illusion it will be anything other then literal boomers complaining about not being able to buy toilet paper.

[Anonymous No.1784249]

>>1784061
I've had the same idea but it doesn't exist so unless you can code and make it yourself just tune in to 80m at night. You wouldn't have time to review the recordings either.

[Anonymous No.1784553]

>>1784061
>>1784249
so no one has programmed a scanner for the RTL-SDR ? that seems surprising

[Anonymous No.1784568]

>>1784553
I thought what you wanted is not a scanner, but to record all the conversations going on in a band at once. A simple scanner that records whatever transmission it finds might exist, who knows.

[Anonymous No.1784573]

>>1784568
my understanding is a scanner is wanted, and a program that auto-records when there is sound detected.

such a setup is easy assuming a scanner mode exists for the rtl-sdr

[Anonymous No.1784579]

>>1784568
>>1784573
These already exist, retards.

[Anonymous No.1784583]

>>1784579
if you have the answer, why are you calling us retards? why don't you..you know..give the answer?

[Anonymous No.1784590]

Which HF contest is on today?

[Anonymous No.1784593]

>>1784590
Answering my own question http://www.rdxc.org/asp/pages/rulesg.asp

[Anonymous No.1784596]

Planning to dust off my license, wanting to return to CW primarily but also some digital modes, og the HF band and below. Voice is not important. Mobile is preferred but not an absolute requirement. What rig do you recommend?

[Anonymous No.1784609]

Is he ded?

[Anonymous No.1784662]

>>1784583
>please spoon feed me!
>There's no other ways to find information!

[Anonymous No.1784665]

>>1784662
Okay then, what do you want this thread to be for?

[Anonymous No.1784675]

>>1784665
People willing to put forth some personal effort toward learning. Also, for people who use equipment beyond a baomeme or RTL-SDR; garbage equipment for garbage operators.

[Anonymous No.1784703]

>>1784675
Is there any really good alternative to RTL-SDR even in the 100 bucks range?

Is there any really good alternative to an UV5R equipped with a good antenna? (inb4 UV5R doesn't do SSB)

[Anonymous No.1784712]

>>1784703
>Is there any really good alternative to RTL-SDR
>Is there any really good alternative to an UV5R

[Anonymous No.1784750]

>build moxon
>almost perfect!
>put it on my small tower
>it wont tune
fuck man, i have no clue what i did wrong. took 3 months to finally get people over to help. and now i have some useless piece of shit up there.
im gonna take it down and try to figure it out, but a big part of me wants to try to take it down with some buckshot

i can see why people just buy shit, but im not going to let it defeat me

[Anonymous No.1784759]

>>1784703
>Is there any really good alternative to RTL-SDR even in the 100 bucks range?
RSP1A

[Anonymous No.1784869]

>>1782390
>There is going to be a satellite broadcasting memes.

https://letsgo2space.com/memesat-1-3/

[Anonymous No.1784919]

>>1784750
Step one, check coax.
Take a multimeter:
Pin to Pin. (Short)
Shield to Shield. (Short)
Pin to shield. (Open)
Check pin from coax end to the end of the radiating element. Check shield to the end of the other radiating element.

Step 2.
Say screw it. Attach a pully so you can raise and lower an inverted V. ;P

[Anonymous No.1785020]

>>1784869
Are there any store-and-forward BBS satellites in orbit now?

[Anonymous No.1785288]

>>1784750
did you actually round the millimeters to 5958.55 ?

[Anonymous No.1785472]

Anyone know what's going on at 3.95 MHz? Seems to be some kind of extremely strong 10 KHz wide signal coming out of the north-west of England.

[Anonymous No.1785475]

>>1785472
Nevermind it's the BBC on DRM

[Anonymous No.1785592]

>>1777491
>Blocks your Frequencies
heh, nothing personal kid

[Anonymous No.1785593]

>>1785288
noooo
i just put in the frequency i wanted

[Anonymous No.1785595]

>>1784759

oops -- limited to 2 GHz, doesn't transmit, uses USB 2.0

[Anonymous No.1785668]

>>1777491
Why won't the noob link work for me? Please help am dumbass

[Anonymous No.1785703]

>>1785595
Nice moving goalposts. You asked for an alternative to an RTL stick. Try a HackRF clone then.

[Anonymous No.1785749]

will I receive NOAA sats better if I mount the 2m antenna horizontally instead of vertically?

>inb4 waste a couple hours on the roof and try

[Anonymous No.1785754]

>>1785749
If you're not using a QFH, you need your dipole horizontal with a 120 degree bend, ideally facing south.

[Anonymous No.1785760]

>>1784596
>Planning to dust off my license,
You don't actually need one to talk, you just talk. You don't have to answer to every incel demanding your call signal (which is optional)

[Anonymous No.1785762]

>>1777491
Is there a good scanner for the police/swat/911/fire that does the new p25/dmr/tier 1/tier2? It needs to be under $50 and mobile or truck mountable. All Google says is buy this over priced thing to transmit I don't need.

[Anonymous No.1785769]

>>1785668
google 'radio_FAQ_Preview11'
ignore the 'Did you mean'
note the black triangle after the found link
click on it and select 'Cached'
save page and you have the radio faq

[Anonymous No.1785778]

>>1785769
Thank you friend

[Anonymous No.1785783]

SDRSharp crashes on
System.OutOfMemoryException
every once and then, out of nowhere.
Updated everything, played with values, configs and drivers, reinstalled libs, plugins, vc++redist, .net framework, and checked system & OS integrity is correct.
I can't get to the problem.
Don't know what else to do.

[Anonymous No.1785799]

>>1785762
>It needs to be under $50
You can't buy a new analog non-trunking scanner for this price. A new p25 capable scanner will be a minimum $250. You may find a deal on something used, but don't get your hopes up.

[Anonymous No.1785800]

>>1785760
>t. loser who is too stupid and lazy to take a multiple choice test.

[Anonymous No.1785802]

>>1785800
>He wants the government to know his comms capabilities

[Anonymous No.1785817]

>>1785754
what plans did you use for the qfh?

[Anonymous No.1785824]

>>1785760
Why are you here?

[Anonymous No.1785878]

>>1785802
>Idiot cope

[Anonymous No.1786000]

>>1785802
What, are you going to have a firefight with the federal government when they come get you? You know that's a death/life prison sentence.
The only concern with getting a loicense would be that it would move you from the good citizen list to the FEMA camps list when SHTF. But if you're posting on 4chan about not wanting the government to know about your capabilities, then you're on that list already. And being a ham may even increase your social score anyway, since most hams are boot lickers.

[Anonymous No.1786006]

Are we being raided by /k/lowns?

[Anonymous No.1786019]

CB is active

[Anonymous No.1786023]

>>1784750
get a nano VNA, 50 bucks

[Anonymous No.1786024]

>>1786019
20m has been pretty active, but it's all talk about the wuhan virus.

[Anonymous No.1786026]

>>1786023
This. The Nanovna is a fantastic tool for the price.

[Anonymous No.1786054]

>>1786024
>all talk about the wuhan virus
They probably didn't get the memo yet.

[Anonymous No.1786107]

Early April Fool's?

[Anonymous No.1786112]

>>1786107
https://www.instructables.com/id/The-Pandemic-Ventilator/

[Anonymous No.1786134]

>>1786107

[Anonymous No.1786266]

>>1786107
>>1786112
So that's why AvE made one of those.

>>1786054
I find it hard to believe China is sub 1000 cases a day given their population density. Wonder how many coughers just disappear before a test can be administered.

[Anonymous No.1786442]

>>1786266
>hard to believe
The source of the map is the NYTimes. Search 'hubei province' to learn more about the current situation in China.

[Anonymous No.1786452]

>>1786054
The US is due to that NY fag hamming it up for the Fed sheckles and Italy claiming everyone has it without testing them.

[Anonymous No.1786526]

>>1786442
ok, chang

[Anonymous No.1787839]

Message from the sky:
PARANOIA WILL DESTROY YA
Image: Elevation angle: 3.7°

[Anonymous No.1788239]

Will the FCC knock on my door if I build this?

https://www.youtube.com/watch?v=SnKKj2bonAI

[Anonymous No.1788274]

Omelette Bro is out and about this morning. He's forgiving Bob Evan's for his terrible eggs from last year and getting take-out from them on his way to CVS for his prescriptions.

He's not worried about the Virus. "The Good Lord Jesus" is protecting him from this plague and only the sinners need to worry.

[Anonymous No.1788277]

>>1788239
Not likely. They have reduced service anyway.

[Anonymous No.1788439]

Lotta contesting traffic on 20 meters.

[Anonymous No.1788443]

https://www.youtube.com/watch?v=f1maNbA6lLo
ham radio vigilantes when?

[Anonymous No.1788460]

Got my 50W UHF/VHF radio set up inside on a 12V 2.5A power supply.
The radio is causing the breaker inside the power supply to trip on all but the lowest TX power setting, so I hooked up my multi meter and got some measurements while transmitting.
While the voltages I got are what I expect, the currents are much much too high. I got it by putting my meter in series with the negative terminals of the PS and radio and taking the measurement while transmitting.
I put it all in a table.

Is there some special way to test current out of a power supply, or is something really wrong here?

[Anonymous No.1788461]

>>1788460
2.5A 12V =30 W
50W at the output means 100 W at the 12V power plug of the transceiver.
Your power supply is wayyyyyyy underpowered

[Anonymous No.1788464]

>>1788460

[Anonymous No.1788472]

>>1788460
>12V 2.5A power supply
That supply is designed for 4 watt CB radios, bro.

[Anonymous No.1788473]

>>1788464
>>1788461
Oh shit. I was thinking internal losses wouldn't be very high on a solid state radio. Figured 50W at 12V needs like 4 or 5A. Then I would be able to get to the 20W transmitting setting on my small power supply.

I'm still interested in why the 10W M2 setting isn't able to continually transmit. Also, why are my current measurements are so far off!

[Anonymous No.1788474]

>>1788473
I have no idea on how to measure power supply, maybe with a fucking huge load. Some guy tested a power supply I bought with car lamps and a multimeter on intensity measurement.

60W 2.5A max seems to be "ok but for a very short time" to me.

[Anonymous No.1788477]

>>1788473
If you need 12 V just use a PC PSU and add additional filtering as needed.

[Anonymous No.1788520]

I'm looking at Baofeng uv-5r's, but on UK amazon, the uv-5r is branded as 'eSynic',

Is it just a rebranded/resold Baofeng?

https://www.amazon.co.uk/400MHz-480MHz-Explosion-flashing-Function-Construction-Adventure/dp/B00YC375ZE/ref=sr_1_3?keywords=baofeng&qid=1585435704&sr=8-3

[Anonymous No.1788559]

>>1788520
Some kind of even shittier version of a Baofeng, it's not even dual band.

[Anonymous No.1788705]

alright, which one of you akshually knows their shit? i've been throwing data at simulations and this seems to work the best for me, and i have a ton of wood left to build this monster.

[Anonymous No.1788707]

>>1788474
radios are not a resistive load

[Anonymous No.1788712]

>>1788705
update

[Anonymous No.1788751]

>>1788705
That's a high start angle but maybe that's what you want to achieve ?
There are military antennas looking like that for NVIS. These are the new ones, very compact :
https://www.hi-q-militaryantennas.com/nvis.html
but there were some without coils, rally big like pic related
https://www.diconex.fr/dataEngl/News-HFantenna.html
You need a tuner to make them all band, but if you want to use it on one band, why not ?
have fun

[Anonymous No.1788844]

>>1788274
Good to hear, anon

[Anonymous No.1788885]

>>1788844
Here's my antenna trap

[Anonymous No.1788892]

>>1788844
>>1788885
Congrats on the burnt eggs.

[Anonymous No.1788927]

>>1788751
>tactical antenna

i have seen it all.

idk, i fucked around with this program and propagation patterns. at 27MHz at that height it seems to work fine that way and it does give me more dBi than a flat dipole. i'll fuck around some more, build it to real size, and give you updates as i go along.

[Anonymous No.1789046]

>>1788927
>more dBi than a flat dipole
How much is that in S-units?

[Anonymous No.1789081]

what's the go to cheap but a step above rtl-sdr sdr receiver nowadays?
I am looking for a reliable 5MHz bandwidth at ~400MHz, no other requirements
something chink would be nice for cheapest price and to take advantage of ali's current sale

[Anonymous No.1789085]

>>1789081
An MSi.SDR is your only option if you want something cheap from Ali that isn't an RTL stick. The quality control is absolute fucking garbage though.

[Anonymous No.1789087]

>>1789085
thanks that's looking not too bad, especially the price
>isn't an RTL stick
unfortunately i really need that 5Mhz bandwidth and i don't think RTL can do that
>The quality control is absolute fucking garbage though.
do you think there are significantly better options if I'd spent a bit more?

[Anonymous No.1789089]

>>1789087
>do you think there are significantly better options if I'd spent a bit more?
An RSP1A from SDRPlay but you can't get it from Ali.

[Anonymous No.1789093]

>>1789089
>RSP1A
thanks, that does look nice and i would get it in a couple days vs weeks
now i just have to fight my inner jew to spend 107€ vs. 27€ on something that does essentially the same thing

[Anonymous No.1789124]

>>1788927
>>1788751
Is this just a dipole held onto arms to hold a position or purpose build (like out of steel wire, or copper etc)?

[Anonymous No.1789253]

>>1784869
>not getostationary
>1 mil$ 360Line resolution memes

[Anonymous No.1789402]

Can't wait for online tests so I can fail the Extra every day until I get it
>https://qrznow.com/usa-conducts-first-all-online-ham-radio-exam/

[Anonymous No.1789518]

>>1789402
So I wonder if this uses a program like Lock Down Browser? Might actually go for extra if I can do it online.

[Anonymous No.1789523]

>>1789518
Probably. Microsoft does tests online too for their certs. They make you move the camera around to "verify" you don't have any cheating material.

[Anonymous No.1789543]

>>1789523
That sounds kind of annoying, but if it lets me take my exam at home then I'm okay with it.

[Anonymous No.1789551]

what are these burst in the ISM band? they look pretty :)

[Anonymous No.1789656]

>>1789124
it works

[Anonymous No.1789666]

>>1789518
Most likely a bunch of boomers who got their zoomers to set up zoom

[Anonymous No.1789667]

>>1789666
>Let us watch you take a hamstudy.org test
>Yea, whatever they say is what you got

[Anonymous No.1789801]

What's a good introductory book about RF design that's not too math heavy? I want to understand impedance, reactance, vector analyzer parameters and all that stuff.
>inb4 the ARRL Handbook
Just because it's the only book you read about it doesn't mean it's a good one.

[Anonymous No.1789811]

>>1789656
I wonder if you could make one of these using stuff like a wunderpole to make a portable solution. Or maybe folding arms like those old school extending rulers. Have you hooked it up to an antenna analyzer to see if reality played out like the simulation?

[Anonymous No.1790084]

>>1782546
Best anime

[Anonymous No.1790191]

Can someone recommend an HF antenna for me? I moved a while back and my old place was surrounded by trees. Used a fan dipole for several years (80/40/20/15?). I have a lot of space now, but virtually no trees to use for hanging an antenna.

What would be my best choice? I was thinking something like a G5RV, EFHW, OCF and mounting it from my roof and sloping it away from house and down to otherwise ground level.

[Anonymous No.1790220]

>>1790084
If you still have the dipoles just string it up using stakes and have fun with NVIS.

[Anonymous No.1790336]

>>1789811
wat
i can barely read, what the fuck do you expect to happen here. actual engineering and deeper understanding?
signal goes out, signal goes in - that's all that matters right now

[A̧n̴̡onym͞ou͡s͢ No.1790536]

>>1790336
That antenna isn't very portable. I think it can be made portable using hinges like old school folding rulers.

As for the second part, I don't know what you mean. I thought it was pretty clear what I meant when I asked if you have attached an antenna analyzer.

[Anonymous No.1790572]

>>1790536
Why carry a CB antenna around, a horizontal to boot.

[An̸҉̛o̴͢ny͜m̵ou҉̢͟s No.1790576]

>>1790572
For the same reason it was built in the first place. . . This also doesn't only apply to CB, there's more to radio than 11m.

[Anonymous No.1790602]

>>1790576
Why not build it yourself?

[An̕͢o͝ny͏m̴͞o̴͏u͟s̵ No.1790608]

>>1790602
Because I was spitballing wats to make it better, and asking what results it had. I'm not going to buy and build something like that on a whim. Given you won't bring up how well it performs compared to the computer simulation and are dodging the point, I'm starting to think it doesn't work well.

[Anonymous No.1790631]

>>1790608
get the fuck out you filthy disease vector

[A̸̢n͞o̶͢ny͝͞moųs̵͝ No.1790673]

>>1790191
>I have a lot of space now
Ah.

[A͡n̴o̶n͟ym͜o̡͜u҉s̴̷ No.1790739]

it works and is now safe enough to run with an amp.

[A̶̴no̧͜ń̶y̸mo͝ù͠s No.1790791]

>>1790739
Nice

[A̸nơ̸͘ny̸mou̴͝s̶̛͘ No.1790822]

>>1790739
>run with an amp
Now let the ether burn.

[Anonymous No.1790885]

Hello /diy/nosaurs.
I have recently come to possess a Baofeng BF-F8HP handheld radio. I am not licensed to transmit but I intend to be soon. As far as listening goes, its been pretty fun. One question I have though(forgive me if its stupid) is can I hook it up to the roof antenna on my house for increased range with just an SMA to SO239 adapter? Is it going to somehow damage my transceiver if I just hook it up to a giant metal antenna with different resistance? Does it matter if I have a television hooked up to said antenna? Will it cause interference if I am not transmitting? Thanks for helping a noob get started.

[Anonymous No.1790896]

>>1790885
Hook it up, buttercup. Then shove it directly up your ass.

[Á̷nơ̢͘͟n̢̕ym͜ou͡s No.1790902]

>>1790885
what frequency is that antenna tuned to?

[Anonymous No.1790903]

>>1790896
Thanks for the response, but telling me to shove it up my ass makes me think you are trying to get me to wreck my equipment.

[Anonymous No.1790904]

>>1790902
No idea. Its a TV antenna. How would i go about finding out?

[Anonymous No.1790909]

>>1790904
>Its a TV antenna

[Anonymous No.1790911]

>>1790909
So its a no go then?

[Anonymous No.1790926]

>>1790911
Place it in your ass, then use the interwebz to look up tv frequencies

[Anonymous No.1790934]

>>1790926
>>1790909
Oh i get it. You are all just LARPing like you know what you are talking about. I thought /diy/ was smart, but it appears its not.

[A̡no̸̶̡̡͡n̵ym͡o̷̕us No.1790944]

>>1790904
a tv antenna is tuned to TV frequencies

[Anonymous No.1790950]

>>1790944
Would it work at all? Or just not very well?

[Anơ͘n͏ym̵̛o̸u̢҉s No.1790953]

>>1790950
Not very well, plus its directional. It might be alright for some UHF but it's not going to be any better than getting a cheap nagoya antenna for the 'feng and standing outside.

[Anonymous No.1790955]

>>1790953
Probably better than an 8” antenna in a basement though? lol

[Ano͞nỳ͢m̵͜ou͢s̷͢ No.1790962]

>>1790934
theoretically you might get lucky and receive at uhf and vhf
https://en.wikipedia.org/wiki/Pan-American_television_frequencies#UHF_band

or use an existing one and modify it.

[A҉n̵on͏ym̴͠o̵͟ùs No.1790963]

>>1790950
build this one and put it on your roof

https://m0ukd.com/calculators/quarter-wave-ground-plane-antenna-calculator/

[A͠no͟nym̨ouś No.1790970]

>>1790963
>>1790962
Hell yeah! Good information, this is what i came here for. Thanks anons.

[Anonymous No.1791101]

I FOUND MY NICHE.

Was watching YT and came across the french Radio Prepper channel where a guy took a 4x4 land cruiser up a mountain and made a VHF contact 90 miles away.

I have my General, but never liked the boomer aesthetic of call sign collecting and sold my HF rig. But now that I moved 60 miles away to the Columbia Gorge, I regret this. These canyons and mountains make UHF useless and VHF only good to one (always dead )repeater with my nicer J-pole and yagi antennas.

I have a big 88' F150 I could do this all in, but to make it more fun I think I'm going to get a buck-boost and bump my 6V motorcycle charging system to 13.8v and see how many Watts I can get out of it into my TYT 7800. My only problem is I only have HT and large mounted antennas for 2m. So I need to find a good light portable antenna.

[A̸nónỳ͜m͢ou̴̢̢s̸͞ No.1791111]

>>1791101
Hey, another Oregonfag. I'd join you in a heartbeat for that kinda shit, but my S40 doesn't do gravel let alone offroad lol. If you get a HF rig again though I'd love to try out NVIS with someone who isn't a boomer.

I've got a FT-818, only 6W of power, but it's small and easy to take anywhere. Also doesn't need anything crazy for a power source like the bigger radios do.

[Anonymous No.1791146]

If I TX at the same low frequency of the Speakers, will it create interference on sound output?

Or nothing will happen and music comes out from speakers without any difference?


Also, the pic I chose is randomic, didn't know what to put

[Anonymous No.1791147]

>>1791146
>>1791146
If you had a lot of TX power available, which since you keep spamming this question, you don't, then maybe. You'd also need a VLF transmitter.

[Anonymous No.1791160]

>>1790904
Measure the length of the dipole. And attach a picture of the antenna with the dipole in focus.

[Anonymous No.1791253]

>>1791147
Why would I need so much power?

A vlf transmitter can be my sound PC card, with an external antenna (attached on headphone jack) optimized for VLF, right?

[Anonymous No.1791255]

>>1791253
Inverse square law for starters.
>A vlf transmitter can be my sound PC card, with an external antenna (attached on headphone jack) optimized for VLF, right?
Ah, you're retarded, I see.

[Anonymous No.1791281]

>>1791146
>>1791253
Please die.

[Anonymous No.1791300]

>>1791146
>didn't know
http://bcra.org.uk/creg/heyphone/documentation.html

[Anonymous No.1791338]

>>1791255
>you're retarded
If for retarded you mean a curious person who is just starting and is newbie, yes, I am retarded.

Now, if you want me to shut the fuck up, why with my PC soundcard is not gonna work? If I can receive VLF with soundcard and antenna, why can't I transmit?

[Anonymous No.1791339]

>>1791338
how much power is necessary to emit VLF/HF/VHF?
how much power can line out provide?

[Anonymous No.1791374]

>>1791338
The best way I've read for doing this is to make an antenna 1/4 wave length, then run two wires off of it, one at each end. Next you place one wire into the ground of a power socket, and the other in the hot. This will make whatever length your antenna is at in RF.

[Anonymous No.1791380]

CB radio is active again, god bless corona-chan and lonely old people.

[Anonymous No.1791408]

>>1791338

[Anonymous No.1791454]

>>1791101
That's it man. It's do it yourself communications.
I didn't have a lot of luck making contact with the older folk. To be fair, we don't have a whole lot to talk about.
In Canada in the west we have 154.100MHz ladd 1 (in the united states, tx on that frequency will send your ass to jail right quick (especially in the state of washington, or near the border)).
Why it's called LADD or LAD even industry canada doesn't know.
I made some of my best contacts up a mountain, 300Km away.
Multi-path mountain bounce. I was using 50 watts mobile (car battery in a backpack) with a 1/4wave antenna (mounted on a stick).

The 1/4 wave antenna can be disassembled to fit in a backpack.

It was neat, I passed messages for the truckers. Listened to some colourful language. :)

[Anonymous No.1791456]

>>1791454
use lipo batteries instead, add a battery management board for less than 5 dollaridoos, and add solar charging.

[Anonymous No.1791457]

>>1791374
This is true, the 50hz or 60hz (depending on your country) forms an amazing carrier for you to modulate.

[Anonymous No.1791459]

>>1791457
Modulating the high voltage backbone would be truly epic. I salute your endeavour.

[Anonymous No.1791463]

>>1791454
>>1791101

[Anonymous No.1791518]

So, if you hear someone transmit that you suspect doesn't have a license, how many miles are you willing to drive to rat on them?

[Anonymous No.1791520]

>>1791518
0

[Anonymous No.1791525]

>>1791518
>Transmission recieved
>Ignition turned
>Yagi out
>That's right, it's boomer time

[Anonymous No.1791527]

>>1791518
Realistically no one gives a shit unless frequencies get straight up jammed.

[Anonymous No.1791531]

On my UV5R I feel like when I scan all I find is static. Static cutting in and out. Have tried adjusting the squelch, no bueno.

I heard some people talking earlier on a repeater but nothing since they left. Is this amount of static normal though? I feel like I get it every hundred khz or so when scanning.

[Anonymous No.1791550]

>>1791531
Stop spamming. Your radio sucks.

[Anonymous No.1791620]

>>1791374
1/4 of wave lenght for VLF (the band I was interested in, that goes from 3kHz to 30kHz) is 4322.618 Metres, lol. How can I fucking make an antenna of 4 km lenght

[Anonymous No.1791626]

>>1791620
hook up your antenna in to an exposed power line, they are long enough. you get signal ground through earth, don't worry about that.

[Anonymous No.1791664]

>>1791626
>>1791620
Telephone line is my favorite. It annoys the neighbors, but that's okay.

[Anonymous No.1791673]

>>1791531
Sounds about right, electrical noise is everywhere unless you live alone in the middle of bumfuck-nowhere.

[Anonymous No.1791697]

>>1791673
Is there any way to combat this? New antenna?

[Anonymous No.1791698]

>>1791697
That would just pick up the same noise but louder, you could probably try a yagi but if there's not much activity near you there's no point. Best bet though is to go for a walk in the hills, elevation is key for VHF.

[Anonymous No.1791699]

>>1791698
he needs a better radio. unless youre in the city, then youre just fucked

[Anonymous No.1791700]

>>1791699
>he needs a better radio.
Yeah, there's that too, get a Yaesu FT-4X/E/R instead, it's a way less shit incarnation of the Baofeng for 60 bucks.

[Anonymous No.1791705]

most noise is homemade

[Anonymous No.1791733]

How can I repurpose this cell phone booster for radio use?

https://www.wilsonsignalbooster.com/wilson-811210-signalboost-30-db-direct-connect-dual-band-amplifier.html

[Anonymous No.1791799]

>>1791531
you could try a filter

[Anonymous No.1791810]

>>1791799
Can you elaborate how exactly that'd work with the uv5r? Still new to this

[Anonymous No.1791828]

Is there a cheap but "good" way to attach a coax (I think rg6) connector to an rtl-sdr? One like this with a SMA connector.

[Anonymous No.1791864]

>>1791828
>Is there a cheap but "good" way to attach a coax (I think rg6) connector to an rtl-sdr?
>rg6
There are dozens of kinds of coax connectors, SMA included. Can you find a picture of the connector you're talking about?

[Anonymous No.1791887]

>>1791733
That looks like a nice piece of kit. Is there a way to open it and take a look inside?

[Anonymous No.1791964]

>>1791887
I'll take it home tonight and crack it open

[Anonymous No.1791975]

>>1791964
Very anticlimactic

[Anonymous No.1791990]

What in the god damn mother of a fuck am I doing wrong here?

>First DMR, Poorfag DM 1701
>Trying to get talkgroups setup
>Set up parrot
>test it a few times
>no feedback
>try to test parrot again
>Only get a tone when I press PTT and it doesn't even try
>Can't hear anything from any channel

How am I fucking up?

[Anonymous No.1792463]

My favorite contact was 14 watts SSB on 40meters from Eastern Canada to England!!!

>>1791828
Your easiest bet may be to get an adapter (impedances be damned) to go SMA male (to go on your sma female conenctor of the dongle) to BNC female, or n-type female. Then buy an BNC-male or n-type male to crimp on to your coax.

Try asking at the next ham club meeting in your area if you can borrow crimpers (make sure you know what size you will need beforehand (Check the connectors datasheet)). Some connectors are solder on (rg6 crimper diameter might be common but the center pin probably isn't, if it solders on you won't need a crimper for that part.), if you watch a couple you tube videos you'll get it.

That reminds me! Buy two extra connectors and always leave an extra couple feet of cable. Especially as you are learning how to do it, that way, when you mess up, you can go again without having to wait for parts again (and pay shipping).

This solution will work at HF, not sure about VHF and above.

Check your local radio communications stores, but expect it to cost 20 to 60$ for a cable plus parts. The price goes down per cable/ connector though.

Best of luck.

[Anonymous No.1792610]

>>1791975
You have the raised edge in focus, not the circuit board. A closeup on the major chips would also be nice.
I am surprised there are, seemingly, no inductors there.

[Anonymous No.1792614]

>>1792610
>I am surprised there are, seemingly, no inductors there.
There are, if you zoom in and squint you can see a few SMD packages with L*** beside them

[Anonymous No.1792622]

I am looking for an adapter from jack to rg58.

I found this on ebay: https://www.ebay.com/i/123862273020?chn=ps&norover=1&mkevt=1&mkrid=724-128315-5854-1&mkcid=2&itemid=123862273020&targetid=885342341400&device=m&mktype=pla&googleloc=1008139&poi=&campaignid=9566708095&mkgroupid=99670951658&rlsatarget=pla-885342341400&abcId=1145978&merchantid=116461045&gclid=CjwKCAjw4KD0BRBUEiwA7MFNTTFDUm9kvfRGC6FW3q3GC0xxBFSFDLpFoZY6aF_Ys1CIFDSa-36TDRoCWaoQAvD_BwE


But I don't wanna spend 4€+6€ of shipping.

I can't find it on aliexpress, can you help me find it?

[Anonymous No.1792670]

>>1792622
no

[Anonymous No.1792981]

What's this night time opening wizardry?

[Anonymous No.1792997]

>>1792981
Not sure. Thought 6m worked during the day not night.

[Anonymous No.1793002]

>>1792997
I hear ya.
I've noticed 20M opening up into China and Korea around 8-10pm recently, but that's about it

[Anonymous No.1793146]

>>1792981
>600 m
Why do so few rigs have this capacity?

[Anonymous No.1793154]

>>1793146
It needed special licencing up until a few years ago. Since it's gone general now though, I guess it's just a lack of demand, not many people have the space to run 150m antennas.

[Anonymous No.1793374]

>>1793146
Probably because it requires bigger inductors and transformers, and adding bulky additional circuitry just for one unpopular band doesn't make it worth it.

[Anonymous No.1793460]

>>1793154
is that back history the same also for 2200m ? being in Europe I am not familiar with US rules.

>>1793374
Considering 600m is the only good day and night band (>>1792981) I would have thought there was a demand.

[Anonymous No.1793466]

>>1793460
>is that back history the same also for 2200m ? being in Europe I am not familiar with US rules.

2200m is a bit more relaxed. 600m restrictions are far more severe in Europe than the US. Anyone in the US with a general or extra can use it. Again though, it's the impracticality of the antennas that mean not many people are interested in it.

[Anonymous No.1793468]

>>1793460
I imagine that data is relative to the average propagation characteristics of the band, which for 600m is not good at all compared to the HF bands.
600m is basically broadcast AM radio, and they generally can't cross continents even with hundreds of kilowatts of power.

[Anonymous No.1793476]

>be me
>17
>ham radio operator
>all I do now
>invite girlfriend over sometimes just to catfish old men with her voice
>don't pay attention in classes, too busy checking band conditions
>We get 6 character codes in school to join "Google Classroom"
>think it's the stupidest thing but don't have a choice
>teacher has raspy voice
>can't tell if he said b or v in the code
>nobody can
>he keeps repeating it but nobody can understand
>pipe up
"Can you use phonetics?"
>get weird looks from peers
>luckily he's an ex-marine
>does as I asked
>class completely confused by what just happened
"73 thank you"
>Teacher is confused too

>lunch time
>bands seem to be more stable, have a minute to stop checking and talk to friends
>Friend tells a joke to the group
>Hilarious
>People are doubled over laughing
>I have a monotone expression and say nothing
>can't start laughing yet, simplex operation
>Friends look at me
>wait for them to stop talking
>I stammer
"h-hi hi"
>Universal WTF looks
>shrug, go back to band conditions

>chemistry class
>we have a test, didn't know it was today but feel ready
>rush through test, pausing momentarily to tap out "CQ" on my desk in morse code
>nobody knows morse code, just like on all the other tests
>hoping one day someone will learn
>give up and finish
>still 30 minutes left
>ask to use the washroom
"sure anon"
>don't need to go but bored out of my mind
>whip out my baofeng and ragchew with some OM on 2m
>miss bus home
>mom has to pick me up, pissed that she had to leave work early
>don't care
>convinced her months ago to let me install a Yaesu in her car
>DX all the way home
>run into house and continue on base station
>band conditions start to deteriorate, give up and turn the squelch on my radio up

>later
>playing Minecraft with some friends
>middle of boss battle
>been preparing for weeks
>radio starts blaring
"SEE QUE DEE EX"
>oshit.jpg
>go afk immediately to respond
>friends are pissed and don't talk to me for a week
>worth.pdf

[Anonymous No.1793497]

nice confabulation

[Anonymous No.1793506]

It looks like both noob FAQ links in the OP are dead. What's a good resource to start with?

[Anonymous No.1793515]

>>1793506
>noob FAQ
>>1785769

[Anonymous No.1793519]

>>1793506
It is still out there but harder to get:
sftp://bit:[e-mail]
And then enter Cyberpunk sub directory and look down. You might use the sftp client in Linux.

[Anonymous No.1793521]

>>1793515
>>1793519
Thanks Anons. I ctrl+f'd for "dead" and didn't see any bitching. Should have checked closer.

[Anonymous No.1793634]

How do I make an antenna for my bao meme to get an extra mile of range.
Set up would be fixed to an apartment, so low key visibility is preferred but not not necessary...

[Anonymous No.1793637]

>>1791531
>On my UV5R I feel like when I scan all I find is static. Static cutting in and out.

Yup I have came to the conclusion the frequency scan feature is about worthless on the baofag.
Have to prep program channels from radioreffernce

[Anonymous No.1793656]

>>1793634
You don't.

[Anonymous No.1793664]

>>1793656
Oh no? Why not?

[Anonymous No.1793667]

>>1793664

[Anonymous No.1793674]

>>1793634
>extra mile
meaningless without your current range

[Anonymous No.1793711]

>>1793637
>>1791531
You're probably just in a building. The UV5R is already a sub par radio, so when you put in in a building full of absorbing walls, and electrical interference of course it's going to struggle.

Additionally scan isn't magic, it requires someone to be actively transmitting while it passes them to stop.

[Anonymous No.1793740]

Are there any good resources on antenna design specifically for receiving?
It seems like everyone always talks about optimizing antennas for transmitting efficiently but I'm not interested in that
How do i pick the best antenna to optimize SNR so i can recognize even weak signals in a specific band

[Anonymous No.1793862]

>>1793740

[Anonymous No.1793905]

>>1793740
Probably in some books about shortwave radio, or AM. Stuff like the flat loop antenna.

[Anonymous No.1793981]

>>1793740
Often a good antenna for reception is also good for transmitting. There are receive only antennas such as ferrite antennas but I am not sure I would say those are good other than being compact.
Tuned antennas reject noise outside the frequency band you want to listen to but you most likely need means for re-tuning the antenna.
Directive antennas such as arrays reject noise outside the reception lobes, and again you probably want ways to adjust the direction.

[Anonymous No.1794092]

New thread
>>1794085
>>1794085
>>1794085