All,

I am interested in building a tuned counterpoise system. The antenna is
a screwdriver and the frequency of interest is 3970 kc. Reg's c_poise
program predicts a reasonable set of parameters, a 10 foot 'wire tube',
one meter up, and a coil in the range of 50 uH. The program predicts a
'ground' in the range of 5 Ohms.

How oversimplified is this?

The current ground measures over 40 Ohms and the system is just over 5%
efficient. To go from a ground of 40 Ohms to one of 5 Ohms gives the
potential of a system efficiency approaching 50%. An 8 to 1 increase in
efficiency could yield a 9 db improvement. This is worth some serious
experimentation.

Thanks for you thoughts and analysis in advance - Dan