[amsat-bb] KPC and IC910 help

Glenn Little glennmaillist at bellsouth.net
Mon Sep 1 21:33:15 UTC 2014

Do you have the service manual for the IC910H?

If not, it can be downloaded 
here  http://www.rigpix.com/icom/ic910h_service.pdf.

The manual for the KPC9612+ is available here 

I will look this evening to see what may be causing your problem.


At 02:46 PM 9/1/2014, Jim White wrote:
>Looking for a bit of help here.  In reassembling my 9600 bps ground 
>station today for an upcoming launch I found two problems.
>1) My IC910H goes into transmit on main band when I power it on, 
>even with nothing connected.  It worked fine a month ago.  Using the 
>4/5-power on factory reset clears the settings but it still 
>transmits when turned on.  I'd appreciate any ideas of what else I 
>can try, or - can I send it to ICOM for repair.
>2) A used KPC9612+ I bought from a local guy, which worked fine a 
>few days ago, now has a PTT problem.  The PTT on pin 1 of the 15 pin 
>'high speed' port 2 connector is inverted.  It is ground when the 
>TNC is idle and goes off ground (not sure how far) when I send a 
>packet. The PTT light for port two works properly, red when PTTing, 
>but the output pin is inverted.  I did note the backup battery 
>appears dead because settings like the PC interface baud rate don't 
>survive a power cycle, but I can't see how that should effect PTT 
>polarity.  As above, any ideas about a setting the inverted that, or 
>- where can I send this guy for repair, would be appreciated.
>These two could be related since the KPC and 910 were connected for 
>a month or so.  Perhaps one failure caused the other.  Just speculating.
>Thanks in advance,
>jim at coloradosatellite.com
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