[Amps] Using door knob caps as padders/blockers

[Vic Rosenthal]

Phil Clements wrote:
> 
> I do know that every SB-1000 I have tuned up on 160 meters
> has the same drift problem. 

My SB-1000 did, too.  Recently I thought I could get away with using a Sprague
1000 pf 6KV doorknob in my 160 meter antenna tuner.  This one is about 1" dia,
5/8" high (2.5cm x 1.5cm), significantly larger than the ones in the SB-1000. At
the 800 watt level (QRP for many in this audience), the SWR drifted up as I
keyed the transmitter.  The doorknob was warm, but not what I would call hot. 
Replacing it with a big fat mica (I don't know the designation, but it's about
2" x 2" x 1" in size [5cm x 5cm x 2.5cm]) put an end to this behavior.

Vic K2VCO