[Elecraft] [K3-KPA500] SWR jumps up with 5 second key down

[ai6ii]

Okay, some more info. The KPA500 does not have a problem with the inverted
vee for 40 meters, but I will set it up with a dummy load to check just in
case. And I will try the dummy load at the antenna end of the coax as a test
tomorrow.

The antenna is the new Q-52 2 element yagi five band from N6BT. It uses
relays on both the driven element and the reflector to cover 20m (high and
low) 17, 15, 12 and 10. I have contacted Tom Schiller who says he has tested
the antenna with 600-700 watts on CW so power should not be a problem. I
also thought the high power might somehow be keying the relays as the
eight-wire control cable parallels the coax 4 feet across the boom, down the
30 foot mast in through the garage in a pvc conduit then into the shack. I
tried moving the control box away from the amp and experimented with running
the coax a different route into the shack, although the coax and control
cable still came down the mast next to each other. None of these had any
affect. 

..mike AI6II

--
View this message in context: http://elecraft.365791.n2.nabble.com/K3-KPA500-SWR-jumps-up-with-5-second-key-down-tp7557071p7557079.html
Sent from the Elecraft mailing list archive at Nabble.com.