[TowerTalk] re Elevated vertical

[Rob Atkinson, K5UJ]

I'd get the feedpoint a little higher up--around 15 to 20 feet if possible, 
and use a few more radials, maybe eight.  yes, the length of them is more 
critical when they are elevated.   They should be cut to 1/4 w.  don't 
forget to wind some of the coax feedline into a coil near the feedpoint to 
isolate the exterior of the coax sheld from the antenna.    For 40 meters, 
i'd wind around 15 turns on a 6 or more inch diameter form.   the size of 
the form depends partly on the size and type of the coax you use.  I usually 
try to not get right at the minimum bend radius because i don't like to 
force it on to a tight form and stress it.

rob/k5uj

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