[Elecraft] [OT] Strange noise

[Vic Rosenthal 4X6GP]

Has anyone experienced this:

When I let the key up after sending a dash or two there is a "static 
crash" which seems to start AFTER or just as I stop sending.

- It happens on various bands, but seems to happen more often on 30m or 20m.

- It happens whether I am running my K3 barefoot or with a kW amp active.

- It is intermittent. For example, this morning (6 am) it was bothering 
me on 30m. Now (8 pm) I can't make it happen.

- On the P3 it looks like a series of horizontal lines extending across 
the display. Sometimes it is very short in duration, but sometimes it 
can go on for several seconds. You can imagine how annoying this is in a 
DX pileup.

It is as if my RF is triggering an arc somewhere.

Could a CFL lamp do this?
-- 
73,
Vic, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/