¿ªÔÆÌåÓýHello Chris,
Both of these look wrong as there aren't any retries on the connection attempts.
This looks more like what I would expect but it's still not showing the expected connection retry attempt at 22:33:58 timestamp.? Very strange.? Regardless, your station is also not decoding any responses from the remote station so if you're confident the remote side is responding with a clear strong signal, there is a receive issue on the TNC side.
My #1 suspicion is your connection to the radio and the cable.? You need to make sure you're getting the audio from radio into the TNC as you expect.? You might try connecting a scope or even a soundcard microphone input to the correct testpoint on the TNC9k6 to confirm the expected audio is making it.? If not, check the plug connection on the TYT (hopefully these radios offer more reliable connections than the almost-always-terrible Baofeng radios).? For the audio output from your radio (I'm assuming your using a TYT HT.. not a mobile), you'll need to make sure the volume setting is fairly LOW as it's far easier to decode weak signals than it is to decode overdriven / distorted signals. Next, have you confirmed the TNC's RX level (think of this as the input microphone level setting)? ?? There doesn't seem to be much built-in audio level tuning support in the PI9k6 firmware so you might have to determine these levels externally using a scope or other method.
Since you're troubleshooting receive levels, consider changing the frequency to your APRS frequency (144.390 here in the US) so you can hear more incoming 1200bps AFSK packets to tune things sooner. --David KI6ZHD |
