[Elecraft] K3 and Homebrewed QSK for QRO

[Gary Smith]

I've been looking without success for a used QSK Master to work with 
my K3 and Ameritron AL-1500.

The circuit on this page reflects what was in the 2008 QST article on 
building your own external QSK box.
http://www.ad5x.com/images/Articles/QSKrevB.pdf

I wonder if anyone has built this and is using it with the K3. If so, 
what insight can you give to help me decide necessary values? I don't 
have an oscilloscope to test the timing measurement. I'm also not 
sure if the receiver/amp interface (he used a  modified Ameritron ARB-
704), is needed with the K3.

Thanks,

Gary
KA1J