Baofeng UV-5R + Raspberry Pi - Fox Hunt Transmitter

[@ericvanderneut3764]

I like it Hayden might have to setup a baofeng up for our local club

[@HamRadioDX]

Yes do it! Looking forward to our Fox hunts

[@Trent28888]

I just watched ur vid to see how ya done it,turns out theres actual rpi programs to do it but the way you did it u can get a DRA818V module which is 2M and theres also a 70cm version aswell

[@JamieStuff]

[Putting on my EE hat] It sounds fine; you don't need the isolation transformer. However, if you use a cheap buck converter (car USB charger) to power the Pi, you might. Use a short bit of shielded cable for the audio from the Pi. Replace the pot with fixed resistors. Attach a short piece (a few cm) of bare wire to the shield. Heat shrink the splice and resistors, bringing out the shield wire. Wrap the splice with a few layers of foil (or coax shield, if you have some), with the shield wire between layers, and then heat shrink over that. In extreme cases of RFI, you may need to put the Pi in its own metal case. If you put everything (except the antenna, of course) inside of a steel ammo can, you may find that you don't get the RFI when running 2m. Ammo cans are great for foxes, since they are quite weatherproof.

[@thebugg333]

I'm lucky to have any pi's , i had a few I gave away and wished I still have. Scoring one now is like buying 5 of those Baofengs.

[@hiepthieu5739]

Do you have a circuit diagram showing the connections to PTT?

[@RobinPringle]

I have a thumb-sized MP3 player with a single mp3 file playing in a loop, and plugged into a vox enabled UV-5R. The mp3 file was edited in Audacity to add in bits of silence to extend the periods between transmitting. I've also considered an old Android phone to be able to control it remotely.

[@HamRadioDX]

I did try that, but I found the VOX was a bit unreliable. Perhaps different MP3 players have a bit better audio driver to trigger it

[@RobinPringle]

@@HamRadioDX yeah you're probably right, it's an old Dick Smith one from when they still had brick and mortar stores here, with built-in rechargeable battery. Also had success with it on a BF-888S on 70cms.

[@RicSpivey]

this is awesome! I've got an og pi that would hopefully run great for something like this!

[@HamRadioDX]

Yeah give it a go! I'm in the process of putting it in a case for outdoors now, so once that has been built I will do another video.

[@raymundumbao2015]

Can we add encryption feature on raspi side?

[@lyledal]

Cool project!

[@HamRadioDX]

Thanks!

[@VworksArt]

How many ohms is that resistor?

[@jacobburch3240]

yeah, what resistor is that?

[@AaronGoodTimes]

Great video! Super interested in signal hunting.

[@HamRadioDX]

Thanks!

[@DonzLockz]

Find the chipmonk!🐿😄 I would leave the the worthless Baofeng but take the $500 Raspberry Pi. lol Cool to see the mods and programming. A double zip sealed plastic bagshould do the trick.👍

[@HamRadioDX]

Yeah I'm thinking a small container from Woolies maybe

[@DonzLockz]

@@HamRadioDX yeah, that would provide more physical protection.👍

[@phurla1]

Thanks for the video. Where can find the finished script?

[@HamRadioDX]

I ended up changing tactics and used a Ardunio instead - kzbin.info/www/bejne/eJylmZeFmJWKgdU

[@phurla1]

@@HamRadioDX Fair enough. I don't want to change products mid-stream. Did you ever compile a script for the Pi? And if so, is that available. Thanks again for the inspiration!

[@HamRadioDX]

@@phurla1 No I didn't. I was using an old script and the Pi has been repurposed along with the SD card. Although at 4:18 you can copy what you can see on the screen - sorry

[@ai5dd]

I think I have all the hardware to setup something like this, thanks :)

[@HamRadioDX]

Have fun!

[@stoikiymuzhik_high-schoole1057]

Nice project ,I think it can also be use for station ID sort of ?

[@TradieTrev]

Question is do you leave the wifi running also :P Being a little linux box we could ssh into with a spare mobile phone.

[@HamRadioDX]

Pi 3, so it doesn't have the WiFi onboard, but could plug in a small dongle

[@TradieTrev]

@@HamRadioDX Seriously am appreciating my Pi4 with 8gb of ram; She runs nicely to watch 720p content. These are crazy little computers and reminds me so much of the C64 as a kid.

[@MrDeivisD]

Use the Raspberry Pi Zero, due to its small size a good choice would be.

[@HamRadioDX]

I think they are hard to get hold of at the moment

[@eoinm0nvk110]

That lead is about 1m long.....maybe a look at common rejection on the mic lead

[@HamRadioDX]

Yes I have some shielded mic cable to replace a lot of that

[@eoinm0nvk110]

@@HamRadioDX No, common mode....on the outside of the shield

[@eoinm0nvk110]

Shorten that cable will make more difference than isolation I would have thought.

[@okhamradio]

At 6:10 sounds like in Half Life game

[@DaveW6OOD]

I'm guessing VK3YE.

[@the1spyderryder]

Use an Arduino mini cheaper and works better.

[@HamRadioDX]

I did! kzbin.info/www/bejne/eJylmZeFmJWKgdU