[MRCA] Antenna "protection?"
mac via MRCA
mrca at mailman.qth.net
Sat May 24 23:34:29 EDT 2014
Nah, not that bad... The Z looking into the end of a half wave wire
is approx. 2500 ohms. This works out to about 2800 volts peak at
legal max. Chose variable capacitors with sufficient plate-to-plate
spacing and other tuner components with appropriate ratings of
course. Been running end-feds here for years at high power levels
with no problems.
Dennis D. W7QHO
Glendale, CA
***************
On May 24, 2014, at 6:22 PM, Al Klase wrote (in part):
> Imagine a 33-foot vertical, half-wave at 14 MHz, fed at it's base
> by a tuner, running ORO. The RF voltage at the output of the tuner
> is going to be astronomical, think Tesla coil.
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