[arm-allstar] motorola gm350 4 channel radio

Alan matthews alanm0aqc at btinternet.com
Mon Feb 25 08:10:54 EST 2019


hi group.

Can anyone assist me please?

I am trying to setup an allstar node using a modified sound fob connected to a motorola gm350  UHF 4 channel radio.

I am not getting any good results.

when I TX I received a dead carrier response from the radio, there are no end of tx beeps, so therefore the radio appears to be doing something. If I send a DTMF *81 again dead carrier no time announcements heard.

I currently have simple usb option J set as USBINVERT this seems to enable some reaction from the radio. USB option does not seem to have any response.

When looking at the realtime rx telementary upon ptt from the HT I see COS COMPOSITE SHOWS KEYED..... COS INPUT SHOWS KEYED and PTT shows keyed when i drop carrier.
Is there anything peculiar in the code plug that needs setting.

Data Connector
I'm using pin 2 for mike audio.
              pin 8 cos
              pin 3 ptt
              pin 7 ground
             11 rx audio out
Could anyone please advise. 

thanks in advance

regards Alan

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