John, N9JG wrote:
Thank you very much for your suggestion. Your solution is much easier than
my bypass method and can not possibly violate any wiring codes.
John, N9JG

"Roy Lewallen" wrote in message
...
A GFCI measures the common mode current flowing on the "hot" and "neutral"
conductor combination, and is designed to trip quickly when this exceeds a
small, set value (indicating that the individual currents on the two
conductors are unequal). And common mode current is just what your signal
is inducing on those wires. What you need to do is block the common mode RF
without upsetting the detection of common mode 60 Hz AC. What I'd try is to
clamp a ferrite core over the combination of black and white wires on each
side of the GFCI. A single pass through most of the common ferrite cores
should have a very low impedance at 60 Hz, so shouldn't inhibit normal GFCI
operation, but would add significant impedance to the common mode RF. I've
never had to do this, though, so it would be interesting to hear from
people who have had to deal with this problem.

Roy Lewallen, W7EL

John, N9JG wrote:
I am using an Orion to drive my Drake L-4B, and I operate mostly on 40
meters. My antenna is a 110 feet long dipole, center-fed with open-wire
feed
line, and elevated about 30 feet with the support for one end attached to
the house chimney. My shack is in a 2nd floor bedroom, and the circuit
breaker panel is located in the basement at the opposite end of the
house.
The house has a brick exterior, and one end of the antenna is only a few
feet from the shack.

When I operate high power on 40 meters, a GFCI equipped circuit breaker,
which is located in the house circuit breaker panel, moves to the open
position. None of my station equipment is attached to this breaker; this
particular breaker powers four outlets in the garage and two outlets on
the
house exterior. None of these outlets are normally in use. Is it possible
(or even desirable) to install one or more bypass capacitors inside the
breaker panel, and immediately adjacent to, the ground-fault circuit
interrupter? If so, what type of capacitor is recommended?

John, N9JG




John,

If the GFCI is indeed a breaker, as you said, then you will not be able
to access the line side of the hot wire. That connection will be from
the back of the breaker to a bus bar in the panel. You should still be
able to apply a ferrite core to the load side. Most breaker-type GFCI
units will have connections for the black and white load wires close
together on the end of the breaker.

73,
Gene
W4SZ