Well thanks all for the advice. As for grounds I have two 8 ft ground
rods and large radial field bonded to shack ground bus with short heavy
wire and connected back to mains entrance ground.
We checked both amps with a spectrum analyzer all the way to 6 GHz.
Tube amp was not real clean but within specs for a 30 year old
technology. The Hercules II SS amp was very clean. So why Hercules
bother his motion light and heath does not remains a mystery.
I tried three different antennas. One coax fed dipole, one open wire fed
dipole and one vertical. Only the vertical did not cause his lights to
come on with either amp. My ants are 100 feet from his motion lights
and 80 ft in the air. Vert is ground mounted at radial field.
I have fixed the problem by relocating the ends of the antennas another
50 feet further away. I not longer bother his light. Why this happens
will have to be chalked up to RF black magic and his 9.99 walmart motion
lights.
Thanks all
Gary K4MT
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