PTT keyed continuously with APRSdroid

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1

I have 2 old HTs, a Baofeng UV5R and an Icom IC-32AT, that I wanted to use for mobile APRS using APRSdroid running on a Samsung phone. I am using homebrewed cables for these HTs to connect to DigiRig (and they work well on Winlink.) The DigiRig is connected to the phone via a USB-C cable.

I have APRSdroid configured as follows:

Connection Protocol: TNC (KISS)
Connection Type: USB Serial

When I press Start Tracking on APRSdroid, the HTs would key with no packet tones coming out and remained keyed until I either turn off the HT or disconnect the cable.

Any ideas on how to resolve the issue?

73,
Boyet 4F3BZ

2

Check “sticky PTT” section of the troubleshooting guide. Likely a case of RFI.

3

I have the same issue and it definitely isn’t RFI :frowning:

4

the digirig is NOT a tnc

so your aprsdroid config is sending serial data via the usb serial port which is triggering ptt

the digirig is an AUDIO device
the rts line of the serial port on the digirig is the PTT ‘trigger’.

so,
you have to choose audio in aprsdroid (selecting the usb audio device)
you have to choose ptt as rts (on that usb serial port)

good luck
kb0wlf

1 Like
5

Hello,
Thanks for sharing this, i am also facing same problem.