Hello all!

I am moving my packet platform from 20M to 30M (BBS, APRS Weather, Digipeter). I am using direwolf 1.7.

I recently noticed that something has changed on the modem config line. Where I used to be able to set multiple decoders:

?????????? MODEM 300 900:1100 9@30

I am no longer able to do so as I get the error message:

????????? Channel 0: Demodulator + option can't be combined with multiple frequencies.

Even if I drop the tone pair and keep the demodulators I get:

??????????? Channel 0: Demodulator + option can't be combined with multiple frequencies.
??????????? Channel 0: 300 baud, AFSK 1600 & 1800 Hz, A+, 44100 sample rate / 3.

Would someone please be able to assist? I know I am missing a setting somewhere, I just do not know where.

For background, I am running on Ubuntu Linux and have compiled 1.7 from git locally.

Thanks,
-Chris
KO4YAW

开云体育

Hello Chris,

I am no longer able to do so as I get the error message:

????????? Channel 0: Demodulator + option can't be combined with multiple frequencies.

I saw this back on Feb 2022 with Direwolf 1.7D and reported it at .? This seems seems to be a subtle bug around mapping the right modem for the configured speed but a simple work around is to explicitly configure the modem:

? MODEM 300 1900:2100 7@30 /4 D

Please also note that depending on your speed of your computer, adding the /4 can save you some wasted CPU cycles on processing an otherwise very slow mode.

--David
KI6ZHD