[arm-allstar] fob

[Ken]

If you have something with a 3.5 mm plug, all you need to do is touch your finger to the center lead and you should hear a blast of 120 Hz "hum".
*How* you hear it depends on the software you are running. There is a sound recorder accessory that comes free with Windows. That would do.

GL
Ken



-----Original Message-----
From: AD2DX [mailto:ad2dx at ad2dx.us] 
Sent: Friday, April 08, 2016 2:34 PM
To: Ken <ke2n at cs.com>
Cc: arm-allstar at hamvoip.org
Subject: Re: fob

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
>
>
>

This email communication and any files transmitted with it may contain confidential and or proprietary information and is provided for the use of the intended recipient only. Any review, retransmission or dissemination of this information by anyone other than the intended recipient is prohibited. If you receive this email in error, please contact the sender and delete this communication and any copies immediately. Thank you.