[arm-allstar] motorola gm350 4 channel radio

Mon Feb 25 12:58:39 EST 2019

Alan,

As I say I'm not a Motorola person so know very little about them. My 
comment originally was in error as I was actually referring to the 
jumper that deals with the on and off hook when PL comes into play. 
Believe it must be there in order for Audio to pass to the speaker. But 
then again it may be only relevant to certain radios.

If you read this link https://files.elektroda.pl/99770,gm350.html it 
does mention Hook logic and might have something to do with your Audio 
not passing. Food for thought.

Should probably not have commented about something I know nothing about 
in the first place. However i didn't see anything about it in your 
original post and thought it might just be something relevant when it 
comes to your Motorola radios.

Hope you find a fix

Larry - N7FM

On 2/25/19 9:04 AM, "Alan Matthews via ARM-allstar" wrote:
> larry and doug
>
> Doug I have tried swapping the tx and rx audio lines with no effect.
>
> Larry I'm sure sure about the mike pins this is the first time ive tried vthe gm350 so i'm in the dark.
>
> regards
> On 25/02/2019 17:00:05, arm-allstar-request at hamvoip.org <arm-allstar-request at hamvoip.org> wrote:
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> Today's Topics:
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> 1. Re: motorola gm350 4 channel radio (Doug Crompton)
> 2. Re: motorola gm350 4 channel radio (Larry)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 25 Feb 2019 11:20:16 -0500
> From: Doug Crompton
> To: ARM Allstar
> Subject: Re: [arm-allstar] motorola gm350 4 channel radio
> Message-ID:
>
> Content-Type: text/plain; charset="UTF-8"
>
> Alan,
>
> >From what you saying the COS looks to be working correctly. Is there any
> chance you have the RX and TX audio lines reversed? I don't have the radio
> connections handy but maybe someone else does.
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio *
>
>
> 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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> ------------------------------
>
> Message: 2
> Date: Mon, 25 Feb 2019 08:36:32 -0800
> From: Larry
> To: Doug Crompton via ARM-allstar
> Subject: Re: [arm-allstar] motorola gm350 4 channel radio
> Message-ID:
>
>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Alan,
>
> Not familiar with that Mmotorola radio but do recall the GM 300 series
> required jumping a couple of Mic pins does the GM-350 require that and
> if so is it in place?
>
> Larry - N7FM
>
> On 2/25/19 8:20 AM, "Doug Crompton via ARM-allstar" wrote:
>> Alan,
>>
>>  From what you saying the COS looks to be working correctly. Is there any
>> chance you have the RX and TX audio lines reversed? I don't have the radio
>> connections handy but maybe someone else does.
>>
>>
>> *73 Doug*
>>
>> *WA3DSP*
>>
>> *http://www.crompton.com/hamradio *
>>
>>
>> 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
>>>
>>> ---
>>> This email has been checked for viruses by AVG.
>>> https://www.avg.com
>>> _______________________________________________
>>>
>>> ARM-allstar mailing list
>>> ARM-allstar at hamvoip.org
>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>>
>>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>> _______________________________________________
>>
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>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>
>
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