Jim,
You seem to be assuming you can't have an acceptable radial field in a suburban
backyard. I'm in suburban Chicago and had an available space of only 60' x 40'
for my radial field. I centered a Hygain Hytower in the middle of the space
and installed 60 evenly spaced radials varying from 20'(0.15 wl) to 35' (0.25
wl)as space permitted. On 7Mhz, the Hytower functions as a full size quarter
wave which would be within your height limit. Despite my smaller than optimum
radial field, references I checked said I should have been down only about 1db
from a full 120 0.4 wl radial field. I had no way to measure this, but I can
tell you it played very well on 7Mhz. Don't assume you can't do a radial field
that performs well without own acres of salt marsh.
Jim W9TM
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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