[Elecraft] Re: The tuning of a counterpoise and RF current meter protection

[Stuart Rohre]

Very good summary of how to adjust a counterpoise,
And mention might be made of the Ten Tec T kit Artificial "ground" tuner,
which like the MFJ is only a series resonant circuit with current indicating
meter, but I paid only $49 for the kit and one evening assembly.  Might be
$59 now, but worth it.

The series tuned circuit of course has minimum impedance and therefore
maximum current when tuned to resonance with the random wire on the rig
ground.

A way to preserve high quality thermocouple ammeters for RF circuits is to
shunt them with a carbon resistor until you are sure the circuit you are
trying to measure does not have current higher than the thermocouple meter
rating.
73,
Stuart K5KVH