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<body class='hmmessage'><div dir='ltr'><font style="" color="#000000" face="Tahoma,sans-serif">WOW, when you are using a $50 BBB are you going to spend $100 for a USB interface??? I think not. The effort to make a $2.50 FOB work is well worth it at that cost. The DMK URI is only $70.<br id="FontBreak"></font><br><b><font style="font-size:16pt;" size="4">73 Doug</font><font style="font-size:16pt;" size="4"><br></font><font style="font-size:16pt;" size="4">WA3DSP</font><font style="font-size:16pt;" size="4"><br></font><font style="font-size:16pt;" size="4">http://www.crompton.com/hamradio</font></b><font style="font-size:16pt;" size="4"><br></font><br><br><div>> Date: Sat, 15 Nov 2014 12:40:36 -0500<br>> From: n3xcc@zewireless.com<br>> To: arm-allstar@hamvoip.org<br>> Subject: Re: [arm-allstar] Yet another USB FOB Modification<br>> <br>> > One thing I always like to see is some LED's to indicate what is going on.<br>> I likewise. This along with other reasons is why I brewed by own interface. It's nothing fancy, but <br>> it does have indicator LEDs, additional audio output filtering, (for driving a modulator directly) <br>> and USB failure detection.<br>> <br>> Frankly I was tired of trying to locate modifiable FOBs, then go through the time and effort <br>> required to add all of the additional circuitry I thought necessary.<br>> <br>> You can check out the USB-RIM here: http://www.repeater-builder.com/products/usb-rim.html<br>> <br>> Scott<br>> <br>> Scott Zimmerman<br>> Amateur Radio Call N3XCC<br>> 474 Barnett Road<br>> Boswell, PA 15531<br>> <br>> On 11/15/2014 11:25 AM, Mark Herson, N2MH wrote:<br>> > Yet, yet another comment on FOB mods...<br>> ><br>> > I've done a bunch here on pc prototype board. One thing I always like to<br>> > see is some LED's to indicate what is going on.<br>> ><br>> > In addition to the green heartbead LED, I also include a red LED to<br>> > indicate PTT and a yellow LED to indicate COR coming into the fob.<br>> ><br>> > The red LED needs another transistor in parallel to the usual PTT LED.<br>> > This keys the red LED which is then connected to +5 VDC through a current<br>> > limiting resistor.<br>> ><br>> > The yellow LED is connected from the incoming COR line through a current<br>> > limiting resistor to +5 VDC. This limits the incoming COR to an active<br>> > ground from the radio equipment. Fortunately, this protects the sound fob<br>> > from an incorrect COR condition if the radio is turned off or otherwise<br>> > disconnected from the FOB.<br>> ><br>> > +5 VDC is picked up from the sound fob.<br>> ><br>> > This whole topic reminds me of YAPP from the early days of packet radio.<br>> > YAPP was a file transfer protcol customized for packet radio. YAPP stands<br>> > for Yet Another Packet Protocol :-)<br>> ><br>> > 73, Mark, N2MH<br>> > Allstar Node 40831<br>> > ACID plus 2 BBB's and counting...<br>> ><br>> >> Date: Sun, 9 Nov 2014 02:11:25 -0500<br>> >> From: Doug Crompton <doug@crompton.com><br>> >> To: "arm-allstar@hamvoip.org" <arm-allstar@hamvoip.org><br>> >> Subject: [arm-allstar] Yet another USB FOB Modification<br>> >> Message-ID: <BLU172-W299469D7812B52ECE86A28BA830@phx.gbl><br>> >> Content-Type: text/plain; charset="iso-8859-1"<br>> >><br>> >><br>> >> Here is a link to my modification of the USB FOBS recently noted on this<br>> >> list and available from ebay at $24 for a lot of 10. I will be adding<br>> >> this link to the BBB web Page.<br>> >><br>> >> http://crompton.com/hamradio/usb_fob_modification/<br>> >><br>> >><br>> >> 73 Doug<br>> >> WA3DSP<br>> >> http://www.crompton.com/hamradio<br>> ><br>> ><br>> > _______________________________________________<br>> ><br>> > arm-allstar mailing list<br>> > arm-allstar@hamvoip.org<br>> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar<br>> ><br>> > Visit the BBB web page - http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/<br>> ><br>> _______________________________________________<br>> <br>> arm-allstar mailing list<br>> arm-allstar@hamvoip.org<br>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar<br>> <br>> Visit the BBB web page - http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/<br>> <br></div> </div></body>
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