[arm-allstar] motorola gm350 4 channel radio

[Greg Stahlman]

I hope you put a blocking cap on the audio in and out lines to the Motorola.
Most have voltage on them. If so, you probably blew to FOB with no blocking
cap. 
Did you look at the audio out with a scope?  Is it making it from the FOB to
the radio?


On Mon, Feb 25, 2019 at 11:11 AM "Alan matthews via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> 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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