BTECH APRS-K1 PRO Multi-Function Audio Interface Cable - USB-C Universal TNC Adapter with Built-In Auto PTT & Audio I/O - Compatible with APRSpro, APRSDroid

Grabbed this to play around with packet radio and APRS on some Baofeng and TIDRadios. The packet radio doesn't work very well since the radios themselves just can't transition between send and receive as fast as a mid-tier radio. But for APRS, this worked great. It wasn't really something I needed, but I just wanted to play around with it. It worked.

This cable is working great for capturing audio on a specific frequency I have set up. I run the audio output into a voice recorder so I can log all transmissions and review them later. Everything is functioning as expected with my Baofeng UV-82, and it’s been a reliable setup so far. I will update this review if anything changes.

Worked for my Baofeng 5RM and direwolf on a Linux box to get on APRS. I’ve read other reviews about the issues with squelch and VOX but I didn’t have that problem at all. Once I got everything configured it was plug and play. Looking back I would have got the more expensive cable with PTT but oh well.

New android phone, so I needed a new cable to play APRS.

Works great, wonderful for on the go digital modes.

If you are using this for fldigi or aprs, set vox delay to the shortest amount of time possible on your radio, and turn off ctcss/dcs at least for RX (and turn off squelch) (although I do most packet/digi on simplex only) Also, be sure you have your audio settings correctly on your computer. Either way, works really good with fldigi/flarq so far, have sent radio emails and images as well. QSSTV also works really good with this. But once again, make sure you have everything set up right. Personally I will say, I prefer a digirig mobile + digirig cables but this is a cheaper more simple to set up alternative for less computer nerdy people.

Love this cable! It's to use on most of my HT's, I've been doing sstv for 2meters and using my phone now onto the tablet. If your looking for a great cable for the price this is it!

I was looking for a cheaper alternative to use APRS on handheld Ham radios (HT) utilizing my cellphone. This USB -c model seemed promising, but when I first connected everything, I noticed that the unit kept lowering the volume on my phone and causing the HT to lock up while transmitting. This would continue until I disconnected and then reconnected everything. After a few iterations, the unit will finally start working (after you ensure the volume on your phone is turned back up), until you transmit a few times. Additionally, only about 5% of the transmissions were being received according to APRS.FI. This was all frustrating, to say the least!Light at the end of the tunnel:While preparing to return this item and looking at the more expensive alternatives, I noticed the other units had ferrite chokes on their lines. Therefore, in one last-ditch effort, I ordered some 5mm chokes and placed 4 on the lines (as shown in the picture). THIS WAS THE GAME CHANGER! The successful transmission rate is about 85%, and the volume/lock-up issue happens far less frequently. Hope this helps and good luck!73