[Premium-Rx] Still struggeling with my RACAL RA 1792

[Dan Rae]

On 1/16/2014 11:47 PM, Heinz Breuer wrote:
>
>
> I still face a BITE 11 error, this is varactor diode ref out of range 
> and relates to the A8 board 2nd LO/BFO Synthesizer.
> Any advice what might help?
Heinz, this is likely just the adjustment.  Have you done that?  It is a 
relatively simple process involving just a Voltmeter.
>
> Another problem is the AM key. It doesn't make contact any longer. If 
> I hold it down and power up it is not shown as sticking. I tried some 
> Caig Deoxit but can't really get into the key. Last resort would be a 
> new key. Are these still available? I seem to recall these keys used 
> in early IBM PC keyboards but trashed these keyboard decades ago.

These keys have a sealed reed switch in them, and a moving magnet. 
Cleaner will thus not get at the reed.  It is possible to replace the 
reed itself if that is broken and you can find one.  The magnets seem to 
last for ever.  The switches come apart once you take them off the board.

73 - Dan