Topband: Tuning a 1/2 Wave Vertical for 40 Mtrs

[Richard (Rick) Karlquist (N6RK)]

> fact, I had it working perfectly last week on 40 but now it simply won't
> work on 40 (at the same setting that worked before and with no apparent
> change in the inductance that got it to work at 7.00 MHz) and I am at a

You need about 80 pF from antenna to ground, and about 4 uH from antenna
to center conductor, or vice versa.

Rick N6RK