LF: Top loaded spiral 137kHz vertical (G3NYK/EI0CF and others)

[Laurence KL7 L <hellozerohellozero@hotmail.com>]

I think someone was asking about these a while back. Just found an old file of the variant installed in a small residence garden back in 2005 for WD2XDW in Oklahoma 

This was made up of parts from  Green fiber Military poles and similar parts for camo supports etc. Standlone it worked, but worked a lot better with a few more top cap wires. Self resonance was about 185kHz from memory...

I used Alans NYK design for finding the C and Rtot passive bridge http://www.xeropage.co.uk/g3nyk/aelossbr.htm

http://kl7l.com/top load.png

Laurence KL7L