HyGain [MFJ] claims 80mph, unguyed. Does anybody have any personal
experience to confirm or contradict this?
My somewhat smaller CushCraft R5 has stood unguyed (on a roof tripod)
for 20 years.
If I want to guy the 640, I'd have to move the tripod, which means more
holes in the roof.
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Bert Hyman W0RSB St. Paul, MN