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2023-11: Warosu is now out of extended maintenance.

/diy/ - Do It Yourself


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2028841 No.2028841 [Reply] [Original]

HAM IN A CAN edition
mobile base stations
https://qsradio-test.com/shop-now.html#!/New-Item-Hammo-Can-Pro%E2%84%A2-18-Go-Box-Without-Radio/p/68562674

>> No.2030755

>>2028841
>$300
What a fucking scam

>> No.2030874
File: 1.97 MB, 1942x4051, IMG_20210214_131857__01.jpg [View same] [iqdb] [saucenao] [google]
2030874

I put this one together for about $160 and that's mostly due to the $120 12amp lithium battery
Also has
>Radio
>Inverter
>Flood light and night light
>12v cig adapter.

>> No.2030875
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2030875

>>2030874

>> No.2030877
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2030877

>>2030875
End

>> No.2031886

Has anyone built one of those Poojeet HF radio kits Ubitx or something? What was your experience?

>> No.2032311

>>2030874
What's it do?

>> No.2032602

Is ham radio actually useful for anything aside from chatting with seniors?

>> No.2032653
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2032653

This any good? Totally new to ham but ant something as emergency coms to folks 15 mile away.

>> No.2032775 [DELETED] 

>>2032653
I would stay away from chinkshit, especially something with a shady ebay listing like that. For 15 mile communications I would look into CB radio and recommend a Uniden. They are very inexpensive, only around $49 USD and very easy to operate and install. For a battery setup you can use basically anything, lipo batteries, lead acid car batteries, etc.

>> No.2032789

>>2032602
Not really, outside of certain specific cases. Like maybe communicating with a remote cabin, expedition, or logging operation. Ships use it a lot.

If there is some kind of disaster, war, or social upheaval that knocks out internet/phone (such incidents happen all the time all over the world, they just turned off internet when big protests happened in india and myanmar) then this skillset and equipment becomes very valuable.

Still a dying boomer hobby. Might be fun to be a pirate to troll boomers and evade the FCC, but even the fun of that has sort of run its course decades ago.

>> No.2032808
File: 250 KB, 704x704, Directional_Parabolic_Grid_Antenna_For_Cell_Phone_WiFi_1024x1024[1].png [View same] [iqdb] [saucenao] [google]
2032808

>>2028841

Ya'll are the right kind of nerds who might be able to give me a quick answer:

Over what kind of distance could I get a reliable link between a pair of parabolic antennas, assuming clear weather and LOS, of course. Transmission power would be on the low end, say 1-5W.

>> No.2032834
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2032834

>>2032808
INSUFFICIENT DATA FOR MEANINGFUL ANSWER

>> No.2032844

>>2032834

Okay, intended purpose would be a digital data link, likely 2.4GHz with a much lower frequency/bandwidth "backup" link for inclement weather and redundancy.

Exact bandwidth isn't really critical as long as it's above, IDK, like 100Mbaud in good weather. Within reason, hardware can be whatever it needs to be, though I'd like to keep the dish under 1.5m or so. I'm just looking for some idea on whether or not this is anywhere near realistic. I'm plenty familiar with electronics (a good portion of the hardware would end up built by myself), but not with radio in general, so half this shit seems like straight voodoo to me at this point.

>> No.2032847

>>2032844

I guess distance is really the thing I'm trying to figure out, so tl;dr: is basically "how far could I realistically go with a 1.2m dish and a 5W transmitter shitting out 2.4GHz before I start to drop below 100Mbaud"? Barring any sort of compression, encoding schemes, or error-correction, of course.

>> No.2032848

>>2032808
Ubiquiti has a line of point to point antennas and radios for this.

>> No.2032867

>>2032848

That sort of helps, indirectly. Looks like their 5GHz dish antennas will do "30km+". I suspect that's the absolute maximum that they will maintain a link at all while under optimal conditions, because marketing is marketing. Still, those are pretty small, low-powered antennas using a less-favorable frequency. It looks like my design goals are not be completely infeasible, going off what those things can do.

>> No.2032894

Another question for the radio nerds from a non-radio nerd:

Application: Marine VHF (~157mhz, 25w max transmit power). 3db whip antenna on top of a 40 foot tall mast. Trying to choose proper feedline.

For a 50-60 foot run of feed line do i need to use thicc cable like RG-213, or can I get away with RG-8X? My setup seems to be right around the limit between these two cable types. The thinner, lighter, cheaper, easier to run RG-8X would be my strong preference. I don't even know if it's POSSIBLE to cram RG-213 into the conduit where I need it. But I don't want to limit the setup too badly since this is a critical safety system.

I've read arguments that the loss with rg8x is getting unacceptably high (nearly 3db according to some online calculator), and also arguments that it really doesn't matter for a line of sight transmission from a 25w radio.

Or is there any other coaxial cable between these two sizes worth considering? For marine use it must have tinned, stranded copper conductors and solid (non-foam) dielectric.

The more I try to learn about this the more confusing it gets. Help?

>> No.2033032
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2033032

>>2028841

>> No.2033187

>>2032894
For VHF I would use rg213 or LMR400 superflex for a 60 foot run.
3db is half your signal.

>> No.2033686

New to Ham radio. Currently located in the US and I want something to talk to friends in the UK and Ireland. Anyone has experience with this?

>> No.2033695

>>2033686
Get your general class license so you can use HF.
HF is the set of frequencies that bounce off of the upper atmosphere (ionosphere), allowing you to potentially cover thousands of miles.

>> No.2033696

>>2032867
Ubiquiti also has 2.4 Ghz gear, but 2.4 can be quite crowded depending on the conditions.
Depending on your speed needs (you said 100mbit?), 900 MHz equipment might also work.

I've actually done a ton of research into point to point wireless data with the intention of possibly building a WISP one day, so lay it on me: What's your situation, terrain, etc?

>> No.2033723

>>2032844
2.4GHz will be easily absorbed by rain, snow, and vegetation, so you will truly need to keep literal line of sight at all times, and hope for good weather. Are you trying to extend fast internet to the middle of nowhere? 100M"baud" is a bit of a nebulous term depending on modulation scheme, but could be near 1Gigabit. If this is your low end you're either doing some serious multi channel remote link video streaming or trying to d/l all the porn on the internet at your remote wanking cabin.

>> No.2034052 [DELETED] 

not directly related to HAM but was soldering a pcb and held something in place with loctite super glue and I was a retard and heated the super glue with my iron at 400c I wasn't wearing a respirator either an I kill

>> No.2034399

I'm a retard. Tips on how not to destroy my radio? What can damage it? Transmitting without antenna attached? Pre-amplifier turned up too high? Or do modern radios have protections against that?
Other ways a beginner might damage their equipment?

>> No.2034426

>>2032311
I view it as a portable battery pack - enough to charge phones and laptops for 3 days straight. Adaptable to accept 110v AC, car plus, and USB.
It also has accessories like a red night light, very bright lantern, and a ham radio for local entertainment or help, and also has the NOAA station for weather updates.
My mind drifts to camping with this, but it's helpful around the house. Last night I took it outside and it lit up my yard as I shoveled snow.
If I don't want to dig out an electrical cord or battery supply, there it is.
Half the price as OP, 3x the functionality.

>> No.2034427

>>2034426
Oh yeah, I can also plug in my HF radio for field day/parks on the air

>> No.2034909 [DELETED] 

>>2033696
>possibly building a WISP one day, so lay it on me: What's your situation, terrain, etc?

Not too far off. I've been mulling over the potential problems of living in the middle of nowhere, because that's liable to be where I eventually end up. Not the normal "rural United States" kind of nowhere, with little other than farms for miles, but the "a highway in the distance is literally the only man-made structure you can see from here" kind of nowhere. My main sticking point is the near-complete lack of internet access.

I'm willing and able to go to extreme lengths to deal with that problem, including building a small wireless network and/or laying fiber where cost effective. I'm concerned with any issues regarding terrain, and more concerned with getting an idea of whether this is even close to feasible without some kind of exotic hardware that I can't buy inexpensively or make myself. As mentioned, I'm familiar with electronics, up to and including some embedded system design, but I've never done anything with radio. I spent the entirety of Tuesday catching up on RF in general, particularly in terms of modulation schemes. From what I gather on the performance of commercial systems (cell towers and microwave links, specifically), what I'm asking for is trivial, even to the point of being doable with consumer-level hardware, perhaps slightly modified for increased reliability.

As I had suspected, it looks like the more serious hurdles are more bureaucratic in nature. As in "how do I get the gubment to let me put shit here" and "how much to I have to pay to get the other end of it hooked up". Obviously, the presence of cellular networks proves it can be done, but I'm not exactly a billion-dollar company that can shell out five to seven figures a month in land leases and regulatory fees.

>> No.2034922

>>2033696
>possibly building a WISP one day, so lay it on me: What's your situation, terrain, etc?

Not too far off. I've been mulling over the potential problems of living in the middle of nowhere, because that's liable to be where I eventually end up. Not the normal "rural United States" kind of nowhere, with little other than farms for miles, but the "a highway in the distance is literally the only man-made structure you can see from here" kind of nowhere. My main sticking point is the near-complete lack of internet access.

I'm willing and able to go to extreme lengths to deal with that problem, including building a small wireless network and/or laying fiber where cost effective. I'm not really concerned with any issues specifically, rather I'm looking for an idea of whether this is even close to feasible without some kind of exotic hardware that I can't buy inexpensively or make myself. As mentioned, I'm familiar with electronics, up to and including some embedded system design, but I've never done anything with radio. I spent the entirety of Tuesday catching up on RF in general, particularly in terms of modulation schemes. From what I gather on the performance of commercial systems (cell towers and microwave links, specifically), what I'm asking for is trivial, even to the point of being doable with consumer-level hardware, perhaps slightly modified for increased reliability.

As I had suspected, it looks like the more serious hurdles are more bureaucratic in nature. As in "how do I get the gubment to let me put shit here" and "how much to I have to pay to get the other end of it hooked up". Obviously, the presence of cellular networks proves it can be done, but I'm not exactly a billion-dollar company that can shell out five to seven figures a month in land leases and regulatory fees.

>> No.2034937

>>2033723
>2.4GHz will be easily absorbed by rain, snow, and vegetation, so you will truly need to keep literal line of sight at all times, and hope for good weather.

I'm aware. Given that highly-directional antennas often need LOS to begin with, I already expected that these would have to go on towers. Weather isn't much of a concern. I can tolerate periodic, severe drops in usable bandwidth, as long as the link remains functional at a basic level. That was half of the reasoning behind the second, lower-frequency link, the other half being redundancy.

>Are you trying to extend fast internet to the middle of nowhere?

"Fast" being highly relative. While gigabit or higher would be nice (and apparently even feasible), I just need/want better latency than satellite can offer, and better bandwidth than can be had through a highly-degraded 4G/5G/whateverG connection. Figured a symbol rate would be less complicated, but that was before I found out that QAM was practical at such high orders or what OFDM even was.

In any event, just 200Mbit of actual throughput in good conditions would be plenty. I could probably live with less than half that, and anything more is just gravy.

>> No.2034964

>>2034052
>cyanoacrylate
fucking kek RIP

>> No.2034975

all hyped for ham. range 6 miles. oh.

learn about wire antennas. nice.

>> No.2035013

Is DMR worth the investment or is it just a meme?

>> No.2035828

Alright /ham/ I wanna start building my own fm radio equipement. Where do i start? any books/videos/articles/etc. to teach me how to do?

>> No.2036035

Okey so Ive got this idea but I think it'll work.

Local area is hella shitty for radio, in a valley and weather is often shit six months of the year. In theory, could I take a long length of cord and a antenna and run the cord up the valley and ontop of the hill, perch it inna tree and run the cord back down to my 2nd floor operating room. I'll just use single nails bent into a bracket to hold the cord in the trees and have it sort of bounce back through the trees into the house. Local radio club gave me a bundle of cord that they had sitting in the basementand it seems fine, getting the antenna is step 2

>> No.2036062

>New to /ham/? Read this shit!
http://www.arrl.org/what-is-ham-radio
https://www.fcc.gov/wireless/bureau-divisions/mobility-division/amateur-radio-service
>Your search engine of choice works well too!

The FAQ is now back:
https://wiki.cybsec.io/index.php/HamFAQ
>The wiki is down but is archived: https://archive.is/PjR5s

>Idiot's Guide to Coax Cable
https://www.pcs-electronics.com/guide_coax.php

>Looking for frequencies to monitor near you?
http://www.radioreference.com

>Basic Rx loop fundamentals
https://www.w8ji.com/magnetic_receiving_loops.htm

>DIY SWL Mag. Loop
http://www.kr1st.com/swlloop.htm

>Small Tx Loop
http://www.kk5jy.net/magloop/

>In Depth Loop articles
http://webclass.org/k5ijb/antennas/Small-magnetic-loops.htm

>Homebrew RF Circuits
https://www.qsl.net/va3iul/Homebrew_RF_Circuit_Design_Ideas/Homebrew_RF_Circuit_Design_Ideas.htm

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

> 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

>APRS
http://www.aprs.org/

>how do I into Morse code in a good way?
https://pastebin.com/XwATbRrH

>> No.2036144

>>2035013
worth it. it's sick

>> No.2036164

>>2032653
fucking trash stay away
https://www.youtube.com/watch?v=5vLh6u4BZ8U

>> No.2036167

>>2034399
dont transmit without an antenna
also use make sure your SWR is correctly calibrated or you will fry your transmitter

>> No.2036168

>>2036035
dont see why not

>> No.2036193

does any one here know if its worth it to boost voltage to get higher E on the transmitter coil or is more current (Q) on the coil do a better job since if you boost the voltage you will face loses with either a boost converter or inverter. the net power (W) will be lower due to the losses. is there some cut off for gain on range with this process like minimum current needed to broad cast any set distance?

i know some would say google it but google being stupid and says stuff i know is wrong some times. burn temp on a candle. google that. if it was true then the candle would die within a minute from heat radiated even if it was mostly moving upward

im have seen spark gap transmitter stuff for ham but i was thinking of a survival tool kind of version so low power input. the problem is range drops fast so if boosting voltage works to a degree i would try that with a inverter but if not i guess i will just try to use what i have on hand and deal with short range.

>> No.2036272

>>2036144
Ordered a baofeng and equally Chinese hotspot then.
>tfw the bug bites you 20 years later

>> No.2036352

>>2028841
>Amatuer Radio General
>Amatuer
Retard could have checked the catalog before >>2016693, and he can't into OP. >>2036062

>> No.2036353

>>2034399
Always have an antenna or dummy load attached. SWR of 3 or higher can damage finals.

>> No.2036368
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2036368

>>2036272
Get your DMR ID now while you're waiting so you don't have to when your radio gets here

>> No.2036626

>>2036368
Did that too, all set. Going to watch a little pi-star configuration videos too.
>broke out my uv-5r and kerchunked a few repeaters just to get the hang of it again.

>> No.2036728

Ok total newbie here.

I have in my possession a HanRongDa HRD-737 hand-held aircraft band receiver. It’s tiny, cost pennies off AliExpress, runs off a lithium battery, charges over USB. Frequencies are:

AIR: 118-138MHZ
FM: 87.5-108MHZ
AM: 520-1720kHZ
SW: 2.3-30MHZ
CB: 25-28MHZ

It has one of those tiny telescoping antennas. I’m keen to get into listening as a hobby, ideally just band-hop and log everything I find, maybe publish my results online somewhere. But I don’t know where to start really, so some questions:

1. Are there any good sites for finding or identifying available stations by frequency and region?
2. Is there anything I can do to make this thing more sensitive? Is hooking it up to a long-ass cable antenna doing to make it better? Would hooking it up to a roof-mounted UHF TV aerial have any effect at all?
3. What types of antenna are best for listening to ATC, SW, etc? Should I consider a DIY j-pole for these?

>> No.2036783

>>2036728
http://www.radioreference.com to look up local frequencies

>> No.2036829
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2036829

Bump for ChadBand

>>2032775
>For 15 mile communications I would look into CB radio
Thats going depend greatly on terrain and noise floor.

>> No.2036843

>>2036829
i love my cb i have a uniden pro 401 handheld and a uniden bearcat 980ssb

im planning to build a self sustaining CB man pack (backpack radio) with built in solar and a the ability to go from man portable to base station and back again

>> No.2037084

Hey I don't know if this belongs here, but here I go.
In my village, there are some mfers who have set up a remote controlled gate in a residential road. I used that road to go from point A to point B in 5 minutes. Now I have to take a detour and I arrive at point B in 15 minutes. They won't let me have their remote since I'm not part of that residential area.
Is there any way to "hijack" that signal they send from their remotes, and use it in mine? I've thought of something like an antenna.

>> No.2037133

>>2037084
yes there is

>> No.2037858

>>2037084
Hackrf

>> No.2037874
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2037874

>>2033686
DMR, I haven't got around to playing with it myself since I bought picrel but I'm pretty sure there are international networks and you would only need a tech license also assuming you had a dmr repeater near you.

>> No.2037883
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2037883

>>2036728
The better tuned, and higher your antenna is, the better.

>> No.2037948
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2037948

>>2037084
>I've thought of something like an antenna.

>> No.2037981

>>2033187
does that matter though?

>> No.2038004

>>2032808
1.5m dish has 30dB gain at 2.4GHz. 1W in to that is 1kW EIRP. You'll run out of line of sight before you run in to anything else. You could talk to satellites with that. It's more of a geography question. Google Fresnel zone.

>> No.2038227

>>2037948
I've finally decided that i'll buy a rtl-sdr, attach it to my raspberry pi and make it invisible for them. Next I'll try to decode that shit.

>> No.2038243
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2038243

>>2032653
I'm pretty sure you don't want a 25 watt antenna in front of your face.

>> No.2039371

Let's digital radio over web. All modulation modes are welcome. add the mode in the filename for easier setup.

http://www.mediafire.com/file/818mezprtcc1wts/rtty01.wav/file

>> No.2039425

>>2032808
what is the distance and gain/dBi?

>> No.2039584

>>2032653
never pay that much for chinkshit lol

>> No.2039586

>>2038227
do it
any modern system is probably resistant to replay attacks tho and use some kind of rolling code like all garage door openers do
otherwise just jam their shit until they throw it away

>> No.2039604

>>2038227
I would have started off by researching their exact model for exploits.
But this could be fun. We're here to help.

>> No.2039857

>>2039604
>>2038227
https://www.youtube.com/watch?v=ux0POzpb9dw

>> No.2040941

Does anyone know if it would be possible to install a voice operated cb mic?

>> No.2040947

>>2040941
*activated

>> No.2041623

>>2040941
Nope, such a thing is utterly impossible.

>> No.2041643
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2041643

Dumb Question:

Why are licenses required for HAM Radio? Is it just so you can't shit up the airwaves and be unaccountable for it?

>> No.2041687

>>2041643
Like most things, it's to show you have a minimum (standard) grasp on the subject and can safely operate without harming yourself or others. In the case of radio, interference from poor operating will cause a lot of problems across many services.

>> No.2041863

>>2041623
Care to explain?

>> No.2042043

>>2041863
Nope.

>> No.2042148
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2042148

>>2041643
>>2041687
And it's fucking easy (In freedom land at least)
Test costs $15 and I have legit seen 7 year olds pass it.

Don't worry your jets about the nerd level ranks, technician gets you everything you wanted to do anyhow.

>> No.2042677

Could I use this for VLF

https://www.ebay.com/itm/ADC-Module-High-Speed-A-D-Data-Acquisition-Module-10MSPS-Sampling-Rate-AD9220-Xr/283724000718?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=283724000718&targetid=1068323858110&device=m&mktype=pla&googleloc=9033811&campaignid=10454522054&mkgroupid=104612010220&rlsatarget=pla-1068323858110&abcId=2146002&merchantid=137750361&gclid=EAIaIQobChMImZLA4ImL7wIVDzeGCh3L_gHNEAQYByABEgJISPD_BwE&pageci=83fec3a4-219e-4a1d-be5f-c9512e485b62

>> No.2042918

Have a CB that can TX on the 'low' channels 26.515 - 26.955
and 'high' cannels 27.415 - 27.855
What good does this do for me in the U.S?

>> No.2042932

HAM bros, I need your superior knowledge. I want to get into shortwave listening, but I’m in Nnew Zealand. Because we are positioned directly at the asshole of the Earth, shortwave seems to not work.

When people say “worldwide”, do they really only mean 4000km? If I make a giant antenna, can I truly get “worldwide” reception?

>> No.2042956

>>2042932
"worldwide" reception is called skip, which can be harnessed by any hardware and depends entirely on atmospheric circumstances out of anyones control.
Besides that, all that really matters for an antenna is that the SWR is calibrated and it's mounted where there is as little obstruction as possible.

>> No.2043039

>>2042956
Ok, I’m planning to run a 15 metre wire antenna in my attic (there’s no metal up there), is that likely to start showing up signals from the rest of the world (America, Europe, etc?)

>> No.2043068

>>2042932

Dunno, I can hear Radio New Zealand here in burgerland pretty easy with an end fed dipole with a 41 foot wire element

>> No.2043099

>>2036626
put your node number up when you get it online

>> No.2043107

>>2030755
pfft, you spent $7 on a chink antenna thats in spec and works?
I've got this here antenna made out of a twig I found and covered in 3 cents worth of copper metal antiseize

>> No.2043171

>>2043039
During skip, yea.

>> No.2043216

>>2043099
>dox yourself on 4chan

>> No.2043254
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2043254

Do I need a ham license for playing with the old analog TV bands? Cause I got pic related from ebay so I can use my old TV.

>> No.2043260
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2043260

Picked up this 7 watt FM transmitter from ebay. How far can these go?

>> No.2043931

>>2042956
Also from nz. We get great comms here. I run an Antron A99 and get oz/us regularly.

>> No.2043934

>>2043931
Oh yeah sweet, I reckon I’ll do well with the long wire in the roof. I managed to pick up some French Radio on my tiny trash SW receiver so I’m gonna buy some non-chunk gear and get into it

>> No.2043984

>>2042918
Not much unless you have friends needing a mostly "private" channel. Stay close to the cb Frequency since your swr would go up the further from your tuning. Our group uses 26.935 which is basically channel -2 on cb

>> No.2043985

>>2043254
Highly likely that's illegal anyway

>> No.2044013

>>2041643
Organization, safety, and accountability.
9/10 it's no big deal, but there's a system in place so everyone plays their first round of bowling with the bumpers.
And being given an FCC callsign makes people tingly and think they're a 1oo megawatt AM radio station

>> No.2044120

How do I ground an indoor antenna (cr-7900) when I live on 3rd floor?

>> No.2044164

>>2044120
https://ham.stackexchange.com/questions/34/when-is-rf-grounding-necessary-and-when-is-it-not

http://www.arrl.org/grounding

>> No.2044165

>>2043260
Upstairs to the kitchen where your mom is.

>> No.2045009

why do the taiwanese still broadcast internationally if they know china's gonna throw a shitfit and jam them?
Is there a way to bypass a jamming signal that's 5x louder than they are (500kW vs 100kW)?

>> No.2045253

>>2045009
The jamming doesn't reach exactly where their signal reaches. Depends where you are in the world. With strongly directional antennas you can even try to receive either exclusively from farther away.

>> No.2045299

>>2045009
I’m in NZ, I can pick up Taiwan on some frequencies without much interference from jamming.

>> No.2045375
File: 25 KB, 271x265, ouch.gif [View same] [iqdb] [saucenao] [google]
2045375

gay

>> No.2045400

>>2045375
what am I even looking for here, besides the words
"aurora 67deg" is all it takes for shit reception? How much does geomagnetic shit matter? I haven't seen and xray flares lately, do they ever go above B?

>> No.2046297

>>2043985
@100 milliwatts?

>> No.2046314

>>2028841
Is there a way to use a Baofeng UV-5R as a <5km walkie-talkie? GMRS so I don't have to get a HAM license? Apologies for the newfag question in advance.

>> No.2046326

>>2046314
>2046314
>>2046314
get chirp and program in the gmrs/frs frequencies

>> No.2046658

>>2046314
No. Even if you have a ham license these radios are illegal to use one the GMRS/FRS frequencies.

>> No.2046862

>>2028841
I don't give a rats ass about talking to boomers, but I want to fuck around with radar and modulating retroreflectors should I still get a ham license?

>> No.2047200
File: 661 KB, 974x579, 47088182.png [View same] [iqdb] [saucenao] [google]
2047200

>Jumping down the antenna rabbit hole
What's the best option for covering "long distances" with 2.4ghz wifi?
parabolic dish, antenna gun?
Trying to cover 35m from one metal box to another.
Repeaters aren't really an option because there's an empty field between them.
Are the multiple antennas on the back of a router identical or do they each serve a different purpose, could I extend one of them outside of the house?

>> No.2047230

>>2047200
lasers probably

lasers are best at everything

>> No.2047262

>>2047230
lasers are cool, but no

>> No.2047280

>>2047230
What about magnets?

>> No.2047289

>>2047200
You can buy directional wifi antennas. My brother had one rigged up between our house and his workshop up the hill, about 1km away. He needed some special high-gain wifi shit to make it work and devices didn’t directly connect to it, the signal was picked up by a repeated at the other end and rebroadcast for devices to use. It got a bit patchy on rainy days.

>> No.2048030

>>2047230
do rf lasers exist? sounds like it would just be a yagi or something

>> No.2048184
File: 103 KB, 1048x817, 20210306_011848.jpg [View same] [iqdb] [saucenao] [google]
2048184

Run this along with astatic mic & 5 ft firestick.. Gets out pretty good. Working on getting licensed so I can check out some other bands

>> No.2048914
File: 1.66 MB, 1280x1024, ukraine.png [View same] [iqdb] [saucenao] [google]
2048914

Any ham bros know who these guys are that can be heard on Ukrainian SDRs.
>AM signals
>Drift all over the place
>Just above the MW broadcast band but not as far up as 160 metres

>> No.2048945

>>2032789
Myanmar's having a bad time right now, and I saw a bunch of guys from there discussing how to communicate to the outside world. From VPN to connecting to some private connection by some guy just outside the borders, to some old stuff like pagers and telegrams to outlandish stuff like pigeons and balloons.

Aside from pigeons, I don't think any of those will work now that the military's clamping down. And even then they just might start shooting the flying rats once they figure out that some citizens were discussing that.

>> No.2048983

>>2048184
looks comfy
i could imagine cruising down the highway the soft glow of a cb radio filling the cabin while listening to people chat away on a cool summers night

why did i have to be born into this gay post 90's timeline

>> No.2049026

Are baofengs actually good or is it just a meme? Got a pack of 5 and really have no idea what I'm dealing with here.

>> No.2049069

I kinda want to get into ham but doesn't it kinda suck that you're officially forced to dox yourself? Like anyone can look up your address from your callsign?

>> No.2049120

>>2049026
>Got a pack of 5
>good or meme?
What do you think, Bozo?

>> No.2049122

>>2049069
>Boo hoo, I have to be an adult and take responsibility for my actions.
Stick to 4chins, virgin.

>> No.2049210

>>2048914
Russian freebanders, call themselves "Пиoнepы" ("Pioneers") with their homebrew AM equipment.

>> No.2049350

>>2049120
I don't know man, I panic-bought them when I heard the we were banning radios with certain frequencies from being sold ._.

>> No.2049369

>>2049210
kek

>> No.2049779

fucking garbage usb sdr disconnects every time you look at it funny