Works as a breeze...K3 on 500 kHz. First qso's made

[PA3CW]

After some earlier designs i made this simple PA to use the K3 on 500 khz.  The KXV3 and KBPF3 have to be installed. I use a separate Rx ant.
Please look at the file 500k3pa3cw.pdf in the google group uk500khz
http://groups.google.com/group/uk500khz
I hope Elecraft makes something in a next firmware release to avoid the necessity to change the KXV3 parameter to test before being able to transmit on 500 khz.
Have fun on 600 m!  It is a great frequency with a great history.  
Best regards,
Dick PA3CW