I obviously missed the central point of this post,
and responded to mast vs. tower cost/weight discussion.
There MAY be a subtlety in the ordinance language, regarding
'antenna support' or 'tower' as distinct from antenna. This
may give you wiggle room. Worth careful investigation.
As a practical matter, I'd suggest putting up the 70 foot tower,
with the steppIR on it. You can EITHER let it grow a bit, for
2m yagi spacing, or co-locate the 2m yagi on the steppir boom....
or not much above it. You don't need 10' spacing. You DO need to
get the yagi 20m above ground, for it to be effective for long
distance work on 20m.
Again, practically speaking, if you're an experimenter, the
zoning folks don't want to regulate "antennas"...merely the
support structure. What goes on top is both irrelevant, and may
change with some frequency. If you have decent relations with the
professional staff, (city planner, zoning administrator) they may
be able to give you useful guidance here.
Good luck!
N2EA
jimjarvis@ieee.org
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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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