Topband: earth tester

Lennart m lennart.michaelsson at telia.com
Sun Apr 26 14:15:45 EDT 2015


Hi Rick et al,
Just reminds me of 3Y0X from Peter 1 Island in 2006.
They used a 3 el yagi laying on the ice and had a VFB sig on 160 ...but
calculations were made before they went to this distant QTH.
Nice memory!
73
SM7BIC Len

-----Ursprungligt meddelande-----
Från: Topband [mailto:topband-bounces at contesting.com] För Richard (Rick)
Karlquist
Skickat: den 26 april 2015 19:50
Till: Henk PA5KT; topband at contesting.com
Ämne: Re: Topband: earth tester

Is there some way you could lay a half wave dipole on the ground and measure
the resonant frequency and radiation resistance vs the known free space
values, and convert this to ground conductance and permittivity?  Perhaps
model it in some version of NEC and play with the ground constants until the
modeling program agreed with the measured impedance and frequency?

Rick N6RK

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