[arm-allstar] COS on older VHF radio

[Mike Besemer - WM4B]

Looking deeper, that may not work since the LED flickers on voice peaks 
on TX (although I'm not sure if it does that in FM mode or only in SSB). 
Try poking around the Collector of Q3021 and see what you see.

Mike
WM4B


On Mon, Apr 29, 2019 at 7:16 AM, "Mike Besemer - WM4B via ARM-allstar" 
wrote:

> On the CPU Unit J01 Pin 9 (mates with Control Unit J02 Pin 9) there is 
> a signal called 'Busy/Mod'.  It appears to be an active low.  I'd 
> probe that point and see if it switches state while opening/closing 
> the squelch.
>
> Mike
> WM4B
>
>
> On Mon, Apr 29, 2019 at 3:05 AM, "Rachid Karroo via ARM-allstar" 
> wrote:
>
>> I have an old Yaesu FT 290R II and am planning to use it on another 
>> ASL
>> node.
>> It has a Mic, PTT, Ground and Audio out in the 8 pin microphone plug.
>>
>> I am planning to modify a USB sound FOB for it.
>>
>> Any suggestions please?
>>
>> 73's
>>
>> Rachid
>> 3B8FP
>> Node 40248
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