From: William R Colbert (email@example.com)
Regarding the copper vs emt conduit, I would think the galvanic
action would cause a severe oxidation preventing any good
solid electrical contact.
I used to use emt (thin wall) conduit for my 40 meter (33ft)
verticals; starting with 1 1/4 inch, 1 inch, 3/4 and 1/2
and using the self drilling TEK screws to maintain
good contact and strength. Used two sets as a phased
array for a number of years, no rusting, no loss of contact
and they were very inexpensive compared to the commercial
verticals. Insulators were either Coke or Nehi bottles or
the outside fibreglass shell from an old ComProducts 224-509
antenna. 10 to 12 radials from the shield point of the coax
did quite well and I was able to use the system with good
nulls and directivity on 40 thru 15, usable on 80 as an omni
antenna because the spacing was too close as a directive
antenna. The wife and I were able to raise each or lower
with no problem, and actually one person could handle
the vertical but with power lines nearby, 2 people are best.
So, if the price is right, I would say go for the conduit.
It makes a pretty decent antenna.
"The more I see of the representatives of the people,
the more I admire my dogs." letter from Count d'Orsay
Ray Colbert, W5XE, OOTC#3618, SOWP#1064M NARTE-NCT2R
FP# 111, SOC#78,ARCI 5784, El Paso,(FAR WEST)TEXAS
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