[Elecraft] K2/100 & SB-1000 Amplifier

[Don Wilhelm]

Leigh,

The N0SS amp keying circuit for the QRP K2 requires only the 8R, +6 
volts and ground.

Yes, you could contain the entire amp keying board within the top cover 
and use one of the BNC sized transverter holes for the output connector 
(or drill a new hole).  The 8R signal is available at the Control Board 
P4 pin 9, and +12 volts is available at P4 pin 8 (you would have to run 
it through a 6 volt regulator).

If you have the KIO2 installed, 8R is available on that board at J2 pin 
9, but the KIO2 has only a 5 volt regulator - whether the Amp Keying 
circuit will work with 5 volts instead of 6 is something to be discovered.

So there are several possibilities that you can pursue to keep the Amp 
Keying circuit confined to the top cover - the key is that all signals 
are available at Control Board P4 - for the mounting techniques and the 
  'rest of the story', let your creative juices flow.

73,
Don W3FPR


Leigh L Klotz, Jr. wrote:
> Are there any clever ideas for amp keying jack if you have the 
> transverter interface in the lower chassis?  The upper holes seem like 
> the cable would be messy.