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Re ant cap: you can use a DMM [Rapid 328] to
gnd - I use 1000pF across its terminals to decouple RF for a stable
reading. Simply subtract its value.
73, Rog.
----- Original Message -----
Sent: Wednesday, August 01, 2007 12:05 PM
Subject: LF: Re: newbie help
Dear Paul,
In a nutshell:
- You can tune up more or less any bit of wire for
reasonable results on 500kHz. For best results, make it as high up as
possible, and secondarily as long as possible. An HF long wire, or dipole with
feeders strapped would be fine.
-Work out the capacitance of the wire (see formulas
on ON7YD's antennas pages). and calculate the inductance for resonance around
502.5kHz. For most HF-sized wire antennas, this will be of the order of 100s of
uH. The resulting coil is
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