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KV4P
เข้าร่วมเมื่อ 29 ก.ย. 2024
Videos about amateur radio, and especially the kv4p HT homebrew handheld radio for your Android phone.
kv4p HT new stuff: kits, better APRS, and more!
Project website: kv4p.com
kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. It's completely open source.
00:00 Introduction
00:22 Kits
01:09 Wider rx range (e.g. NOAA weather)
01:50 S-Meter
02:07 500Hz tuning increment
02:29 Better harmonic suppression
03:15 APRS features
08:05 Advanced settings
09:06 Built-in firmware flasher
09:41 Screen stays on
10:05 Audio improvements
11:38 New PCB versions
14:30 Community
kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. It's completely open source.
00:00 Introduction
00:22 Kits
01:09 Wider rx range (e.g. NOAA weather)
01:50 S-Meter
02:07 500Hz tuning increment
02:29 Better harmonic suppression
03:15 APRS features
08:05 Advanced settings
09:06 Built-in firmware flasher
09:41 Screen stays on
10:05 Audio improvements
11:38 New PCB versions
14:30 Community
มุมมอง: 253
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kv4p HT introduction - turn your phone into a modern ham radio transceiver
มุมมอง 67K2 หลายเดือนก่อน
See kv4p.com for details and build instructions! kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It's completely open source (GPL3): the A...
kv4p HT step-by-step build instructions - turn your phone into a modern ham radio
มุมมอง 41K2 หลายเดือนก่อน
Turn your Android phone into a modern ham radio transceiver. In under an hour, build a 100% open source kv4p HT for less than $35 of parts. Follow along with the written guide here, and find links to necessary software, 3D prints, and PCB designs: kv4p.com/quick_start.html This video is the companion to those instructions, and shows every step of the build and test process. 00:00 Soldering the ...
Just wondering if there's a way with computers are probably is . in creating a 440 / 2 meter version instead of just the two meter version I am both ham and gmrs licensed awesome job in creating such a thing. 73 AC 8 JN
This is an awesome project and I really love the new features and progress it is making. Great job 👏
Thanks for following along with us and the kind words!
Excited about the aprs functionality and beaconing. No audio option is nice when hunting
Cool, have fun with it!
Thanks for the update! The low power is fine, we use our builds for legal MURS line of sight transmissions. I didn't catch if a user could control the power output through the app. Integrating our phones to use aprs on MURS for peer to peer telemetry and data transmission is our objective.
Thanks for taking a look! Sounds like an interesting project you have in mind. Right now there's no way to control the power in the app. The radio module supports 0.5w mode (low) or 1w mode (high). I just assumed since 1w is already pretty low, no one would want lower. :) If you have a use case for it, let me know!
Love the project! Built 4 devices for friends and family. My one feature request is easy memory share/export, maybe generate QR code inside the app and scan from another device to quickly set up radio channels and freq for a friend
Thanks for the feature idea! I'd love to add the ability to share memory groups with others, I hadn't thought of the QR code idea which would be cool.
Thanks for the updates!!
Thanks for taking a look!
Awesome!, can't wait to get a PTT Button added and a IR blaster that can learn TV ot other devices IR.
Firstly ..Great regards to you... If i need it completely could i ordered it? I mean those things in complete ( it was assembled) if it could to buy... please share were I can buy it.. TX
Mine didn’t come with the small components😡
Can i make this work with a ESP8266 and for UHF?
Can you configure the ESP32 so that you can turn it into an APRS Digipeater? I would love to build this and power it from a small battery pack and solar panel for a super easy/fast digipeater. Or is there a place we can download the ESP32 firmware and try tweeking things ourself? 73 K7JSP
Not yet, but I plan to add digipeater functionality: github.com/VanceVagell/kv4p-ht/issues/8
I would Try A ESP That can also Do LoRA & LoRA WAN Be useful if you could also Connect to Ripple Mesh & Meshtastic Even do LoRaWAN BBS (Bulletin Board System)
Adding a panadapter via rtl sdr etc maybe interesting. 🤔
A noble thing for the mobile phone user interface. Thank you for your work. If there is room on the PCB it might be prudent to add a USB-C connector to allow charging of the phone while the unit is connected.
My first thought was to look for a nice to have USB-C splitter for just that purpose
One of the connectors I link to on the Quick Start page on kv4p.com is exactly this! It has a port on the side for charging.
@@KV4P Spectacular. I did not dig deeper yet as I have yet to renew my licence having moved from ZR to OH land and letting my call lapse before the move. I am glad you have already thought of this. Thank you for the work you have done and the video. Using mobile phones as a popular User Interface for alternative communications (VHF, HF QRP, MeshNetworks and Digital voice modes) is going to provide growth in the HAM and anti-establishment communications arenas going forward.
Will this work on an Apple device?
Cool is the APRS feature and the idea of a better communication in the wilderness. But as a senior programmer I would like to see some kind of free jungle internet on such a device, for people who do not have enough money to afford the internet. But the messaging option is quite cool.
Great project! Wish I had time to help out.
What an awesome device I have a quick question. If you're in radio mode could you receive a phone call
Great work! I wonder if the text chat is compliant with APRS spec, e.g., can support digipaths, ACKs, REJs, groups, bulletins, etc.
Can you receive audio with display turned off? (its never seen in this or other videos)
Yes you can!
Is there any disadvantage of SA818 VHF (134~174MHz) vs DRA818V 144MHz 145MHz 146MHz 154MHz 174MHz? Seemed the same accept for the 134Mhz band. The SA818 is cheaper and included both the VHF and UHF modules
You can use the SA818S-V or the DRA818-V, they both work just fine.
Amazing! Perfect when out cell range but in range of repeaters.
This is amazing!!! Does it support a translator for morse code to text?
Like it! Thanks for delivering it.
Very cool project, building one now but the pin rows aren't wide enough. I'm going to clip the pins on one side and put in jumpers. Did PCBway get it wrong or is the a different spaced esp32 available.
Unfortunately ESP32 dev boards have turned out to be variable depending on the manufacturer. We're working on a PCB variant that can support the narrow version you got, as well as the original wider version. The one you received should work fine if you bend the pins or use a riser to make it fit in the board (others have done this). Note that I think that ESP32 might not have 5.1k ohm pull-down resistors needed for Android to recognize it and power it. To get it to work, use one of the 2 connector options listed on Quick Start on kv4p.com, those both include the pull-down resistors built-in.
Amazing. My parts are on their way and I just received 5 boards from JLPCB. I only need 2, but ya never know....
How legal is this in your country? Ours is in the grey area since its not imported/purchased per se but DIY but also produce and receive signals which actually controlled by the government
I'm in the US, where license amateur radio operators can build their own radios, but are responsible for ensuring it adheres to FCC requirements (such as harmonic suppression).
Are you using lead-free solder?
Is there plans to sell fully built ones?
Already ordering parts! Cant wait to DIY this!
Have fun!
I just ordered the PCB with assembly and also having PCBWay print the case and stand. Can't wait for everything to arrive! Thank you for this project.
Have fun!
Get in contact with the guys at Trex weapons/ Tech.
Hi Vance! Thanks for the amazing project! A group of hams in our club will build the HT here in London, Ontario! Thanks! Jorge VE3EAD
Awesome, have fun with the build!
@1:28 Pooch: “ no matter how hard I try, I can never figure out who in the heck he’s talking to”
Finally! Something to do with all the phones rendered "obsolete." Brilliant! Your dog is a master photobomber as well.
That's neat ! I guess it wouldn't be too hard to produce a dualband version with reduced power output, even better if a charging port is included.
We hope to have a dual band version in the future! There's a strong community around the project now with lots of talented contributors. Here's the feature request for that: github.com/VanceVagell/kv4p-ht/issues/23
Mesh networks for chat. Opens up ability to send messages to specific people on open channels. Also, Atak Civ compatability. I know i' suggesting this as if it were something super easy but i'm just throwing out the potential i'm seeing.
I'm looking to use something similar to this project as a motorbike intercom. In this regard, I have a question: does the app have a VOX mode or support for external PTT buttons? For the case of moto intercoms it is critical to speak hands-free.
Not yet, but we plan to add both VOX and PTT button options.
Hi - did you make & design this i.e. the app & the VHF module? If so very impressive. Can it be made to transmit at 5w?
Amazing. What is the approximate range in the city?
is it ok to use a simple wifi antenna? why you use esp32, just because of connecting it to phone?
hi. nice project. i have a question. how to put offset value?
I love how you write the "test repeater" 😂
Is there a 70cm option?
Not yet, but soon!
Amazing! I was at the demo at the DFMA meeting, glad I brought my Yaesu!
Looks quite interesting. Would have love to have one if it were available in my region. 73 Jon VU2JO
1:17 will it work on gmrs repeaters?
Turn your cutters the other way for an even deeper cut. The solid back to the item being cut.
Ok this is an awesome idea!
This is awsome, i have a GMRS license and radio but i dont understand how to put frequencies in and use it only for the weather channel. but this is robust to use with family.