On Thu, 13 Jan 2011 13:30:52 -0500, "Greg Neill"
wrote:

Richard Clark wrote:

For the 58 Ohm resistive value, it would have to be about 300 feet
tall - not the size of operation one usually comes to expect for a
Xtal radio aficionado.

If it is that tall, it would exhibit 200 Ohms Inductive reactance (one
fifth of what you report, and the opposite sign).

Something doesn't wash here.

Perhaps it's a longwire antenna, of crappy wire, parallel to
the ground?


Hi Greg,

No, that would more likely result in a characteristic Z of 600 Ohms.
If by being close to ground you mean the 58 Ohms finds itself invested
in the dirt, well, yes that might be the case.

The long and short of it means that to investigate the problems of an
antenna "loading" a tank coil means that you really must understand
the antenna - not a simple thing as this thread will undoubtedly
reveal.

73's
Richard Clark, KB7QHC