On Sat, 28 May 2005 20:35:59 -0700, "John Smith"
wrote:

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Boring.

I was wondering what the impedance the collapsed whip would present, and =

Hi Brett,

Depends on the frequency. EZNEC would answer that in a heartbeat.
Given your preference for backing into problem, at 10MHz, at 1M in
length, 1 - J 1Kohms.

what sort or a balun/auto-transformer could be used between a longwire =
(or other ant), gnd and the pull-up whip to improve reception...

Aw c'mon now, Google will give you this in another heartbeat.

... anyone ever done any experimenting or unique ideas?

Pons and Fleishman comes to mind - with many imitators....

73's
Richard Clark, KB7QHC