[arm-allstar] fob

[AD2DX]

Ken,
You’re absolutely correct. I didn’t think about until late last night that I should plug it into my laptop. I just have to purchase a computer desktop style microphone with a 3.5mm stereo connector in order to be able to test the mic input. For the 10uF cap, I used a 25 WVDC but it would be interesting to test the voltage across that cap...
Thanks.

73,
Joe - AD2DX



> On Apr 8, 2016, at 2:28 PM, Ken <ke2n at cs.com> wrote:
>
> Yeah - in the early days I burned out the input of a fob. It's easy enough
> to do.  If you attached an electrolytic capacitor that had, say, 12 VDC on
> it, that would likely be enough.  Sticking the fob on your laptop is an easy
> way to test it for input and output ... no fancy test equipment required.
>
> 73
> Ken
>
> Message: 1
> Date: Thu, 7 Apr 2016 22:59:13 -0400
> From: Doug Crompton <doug at crompton.com>
> To: ARM Allstar <arm-allstar at hamvoip.org>
> Subject: Re: [arm-allstar] USB FOB Problem
> Message-ID: <BLU171-W74A63BCA40F50B49305993BA910 at phx.gbl>
> Content-Type: text/plain; charset="windows-1252"
>
> Joe,
>
> Obviously you have an audio problem. A scope would fine it in an instant
> but you could signal trace with an amplifier and speaker. If audio is
> getting to the FOB chip then you might have a bad FOB. It has been known to
> happen. The FOB is working with outbound audio? The FOB green LED is
> blinking properly?  Having no audio at all with rxboost=1 and levels turned
> up to max would possibly indicate a short somewhere in the audio path.
> 73 Doug
> WA3DSP
> http://www.crompton.com/hamradio
>
>
>

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