[Elecraft] Troubleshooting a KAP100 I/O failure

[Don Wilhelm]

Joe and all,

I might add that one does not have to have a 'proper' keying plug in hand to
do the job - a sliver cut from a toothpick will work, or since one should
not be plugging and unplugging things with power on, even a tight fitting
wire stuck into pin 4 will work fine.  I have used both techniques.  If you
are inclined to use any sort of glue, resist the temptation, it will wick
into places that it should not be and you will have to buy replacement
connectors - a tight friction fit will work just fine.

For those who do not have a KPA100, the 'keying' is applied to the 10 pin
header on the K2 control board and any connectors that plug to it - cut off
header pin 4 and insert a plug in the pin 4 position of the mating
connector.  After this is done, it is not possible to plug the connector the
wrong way.  You will have the connector present if you have installed either
the KAT2 or the KIO2 or both.  The KPA100 manual provides explicit
instructions (and 2 insert plugs) to key the connection.

73,
Don W3FPR

> -----Original Message-----
>
>   The moral:  Key the plug on the control cable of the KIO2 so
> you might avoid the pain and shame I experienced.
>
>