Hmmm, I have googled Richard... but not found anything other than standard baluns/auto-transformers and all too boring methods of using them... and yes, I could go expermenting on my own with these--was mainly hoping someone has walked this path before and already gleaned the best method, or at least could get me ranting, raving and thinking!!! grin My bark is MUCH worse than my bite yanno....

I didn't mean what the capacitve reactance of the pull-up whip was--itself, I meant to mean the input impedance which the input at the bottom of that whip expected to see...

It seems obivious they have provided some +J Ohms just past the bottom of that whip (or maybe not?)... however, input be high impedance and 1K+ ohms--and some non-reactive load could be assumed to be expected by it?

Warmest regards,
John

"Richard Clark" wrote in message ...
On Sat, 28 May 2005 20:35:59 -0700, "John Smith"
wrote:

This is a multi-part message in MIME format.
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