Back in the mid 1960's I acquired a low band GE FM rig used on the Forest
Industries frequencies above 29.7. All I had to do was change the crystal
and it was on the air (60 watts as I recall).
I had a Hy-gain 18V vertical and I cut that to 29.6 and mounted that on the
mast above my tri-band beam. Guess I used the tri-bander as the radial
screen. SWR was less than 1.2 on the old Heath SWR meter. Talked all over
the USA on FM. I remember the fellows from Wausau, WI and we always
compared notes after field day. There was a LU5 that came thru on a regular
basis and the loudest station on was a fellow in W6 with a great bass voice
named Babe. I did have to take it down
when I put up the quad. (Used the quad on 29.6 even with a 2.5 to 1 SWR).
I liked that so much that when I bought an 2 meter Isopole I put that on the
mast just above the 40 meter cushcraft. On 147.5 simplex with 70 watts I
could talk to stations on the other side of metro Atlanta (as much as 75
miles away). I lost the top section (1/2 wave) piece of the Isopole to
but AA6DX sent me a complete Isopole replacement. The tip of the Isopole is
103 feet. No special ground or anything.
My experience with mounting verticals on top of a beam has been good. Ole
Gus Browning W4BPD mounted 14AVQ's on top of a light weight push up mast on
his Indian Ocean operations and always had a decnt signal on 20 and 15.
73 Dave K4JRB
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