[arm-allstar] Issue with Sound FOB & RPi-3

Tue Mar 26 10:51:35 EDT 2019

Rachid,

 That was good information. The fact that you can change the COS setting
and see the change indicates that something is holding the COS line low.
It might be shorted to ground?  Can you check the physical COS line coming
from the FOB and exercise it open and grounded in usbinvert? When you are
in usbinvert the V option should show clear if that line is open and keyed
when you ground it. This is independent of the radio. If you cannot get
that to work then you might have a bad FOB. If you can then the radio is
not putting out the high/low COS signal.

You can also check the PTT by going into the Asterisk client and issuing
the command  susb key and susb unkey. This should key and unkey your radio.

I am curious how you were able to modify a potted FOB? You need to be able
to get directly to the CM1xx chips pins to bring out COS/PTT. If you really
want to do it yourself there are better unpotted FOBS out there.

What info is shown for lsusb? It would look something like this -

Bus 001 Device 005: ID 0d8c:013a C-Media Electronics, Inc.

This would tell us what chip is potted. Maybe it is not even the right
series chip.

*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Tue, Mar 26, 2019 at 7:01 AM Rachid Karroo <rkarroo at gmail.com> wrote:

> Good day Doug
>
> Thank you very much for replying.
> I followed your comment and did call the option "V" from
> simpleusb-tune-menu.
> With option USBINVERT, selecting option V :-
> COS INPUT=KEYED
> PTT=CLEAR
> No activity even when pressing the PTT of my HT.
>
> With option USB, selecting option V :-
> COS INPUT=CLEAR
> PTT=CLEAR
> No activity even when pressing the PTT of my HT.
>
> I presume the issue is related to my sound FOB. But I still cannot
> understand why there is no activity when pressing the PTT of the HT. The
> FOB responds to Option D (PTT and Tone Output).
>
> Under bash shell, I ran command "lsusb" to check whether the sound FOB was
> active on the PI. I also run AlsaMixer. I was surprised to see that the
> level for MIC was Zero. Even after adjustment, the above issue remains.
>
> The sound FOB looks similar to the one used here.
> http://www.crompton.com/hamradio/usb_fob_modification/  . The sound chip
> has epoxy on it and is definitely not going to be easy to solder as the
> pins appear thinner than a hair. Anyway I will give it a try tonight.
>
> Vy 73s
>
> Rachid
> 3B8FP
> Node 40248
>
>
>
> On Mon, Mar 25, 2019 at 11:32 PM "Doug Crompton via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
>> Rachid,
>>
>>   I really do not recommend using vox to activate COS as it can cause
>> problems.   You need to go into the simpleusb-tune-menu and select the V
>> option. There you will see a display of the COS INPUT. When you key the
>> radio you are talking to your node with it should show KEYED and otherwise
>> CLEAR.  If it is not showing KEYED when you PTT and speak then your VOX
>> circuit is not working properly. If it show the opposite - CLEAR when the
>> radio is keyed and talking then the setting of item J is wrong. It can
>> either be USB or USBINVERT depending on what the COS or VOX circuit is
>> sending. If it is going low on keyed then you would use USBINVERT, if it
>> is
>> going high on keyed you would use USB.
>>
>>
>> *73 Doug*
>>
>> *WA3DSP*
>>
>> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>>
>> On Mon, Mar 25, 2019 at 2:04 PM "Rachid Karroo via ARM-allstar" <
>> arm-allstar at hamvoip.org> wrote:
>>
>> > Good day
>> > I am newbie to AllStarLink and have installed Version 1.5rc50 on my
>> RPi-3.
>> > It was very easy to follow the instruction in order to get the software
>> up
>> > and running.(Thanks to K1GMM video's).
>> > I am using VOX via a Sound FOB. I have an issue and wonder whether it is
>> > hardware or software related.
>> > When I use my HT to connect to my Node, it does not activate the PTT
>> when
>> > monitoring in Supermon. It remains Idle.I am able to connect to other
>> Nodes
>> > and receive their transmission.
>> > I have enabled Echolink and my Node works fine.
>> > I thought there was an issue with my first install so I re-installed all
>> > over again tonight. I used Simple USB Tune Menu to check. Option D (PTT
>> and
>> > Tone Output) works fine but when I use Option 2, no voice transmission
>> is
>> > present.
>> > I have tried with a second FOB, the SoundBlaster USB sound dongle and
>> still
>> > the same.
>> >
>> > Any help would be appreciated.
>> >
>> > 73's
>> > Rachid
>> > 3B8FP
>> > Node 40248
>> > _______________________________________________
>> >
>> > 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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>>
>