[Elecraft] re osc problem on kpa100

[ken cubilo electric]

I did a little more checking into this problem and find that it will
occur at just about anypower level that the pa is switched into the
transmit path, also when the high ref warning goes off pressing the mike
button results in power outputs of 100-150 watts regardless of the power
setting on the front panel, it will reset when you press the mode button
and then reset the high ref alarm, it will not happen with a 50 ohm
dummy load in line. My memory seems to recall someone else on the list
was having a problem like this. anyway it kind of sounds like rf is
getting into the unit somewhere. I just went thru and did a alignment on
both the k2 and the kpa100 and double checked the bias adjustment on the
kpa100. anyone got any ideas?
ken w8ob