[Elecraft] K2 with KPA500 and KAT500 setup

[Don Wilhelm]

True, The K2/10 does not have a keying output, but the K2/100 does have 
a Keyout output.  Those contemplating the use of the KPA500 and KAT500 
will likely have the KPA100 installed.

For those who want to use the K2/10 with the KPA500 or other amplifer, 
read on ---

For those who would like to add an amp keying line to the K2/10, I refer 
you to Tom Hammond (SK) N0SS's web information that is being preserved 
by the MMARC at http://www.mmccs.com/mmarc/n0ss/.

Boards and kits are no longer available - Tom's website is now static, 
but the information is there including the board layouts if some 
enterprising amateur would like to create their own boards
Tom's K2 amp keying circuit can be easily be implemented on perfboard, 
the circuit is not that complex.

If the K2 has the K60XV option fitted, there is a Keyout signal 
available at the K60XV J2 pin 2 - connection to an appropriate output 
jack is the only thing required.  There is room for an RCA jack near the 
key jack - just be certain the hole you drill is clear of the adjustment 
for the 40 meter bandpass filter inductors.

73,
Don W3FPR

On 6/7/2014 10:04 PM, Matt VK2RQ wrote:
> The stock K2 doesn't have a keying line for an amp. Here's an easy way to add one (I recently did this so I could use the K2 with the KXPA100 amp):
> http://www.mwrs.org.au/2014/04/20/elecraft-k2-amplifier-keying-circuit/
>
> 73,
> Matt VK2RQ
>
>> On 8 Jun 2014, at 9:24 am, Robert G Strickland <rcrgs at verizon.net> wrote:
>>
>> I'm  going to use my K2 for Field Day. In prep, I'm putting the K3 aside and putting the K2 back in the station lineup in order to  re-acquaint myself with the its operation. Looking at the cabling diagrams in the KPA500/KAT500 manuals, an RCA jack line from the K2 to the tuner and another RCA jack line from the tuner to the amp looks pretty straight forward. With this setup, do I disconnect the keying/integration cables that normally connect the K3, KPA500 and KAT500? Assuming so, are there any other aspects of using the K2 with the other K-Line units to which I should pay attention? Thanks.
>>
>>