Topband: 160 puzzle

Carl km1h at jeremy.mv.com
Wed Jan 9 13:01:53 EST 2013




> Post is pressure treated and has been outdoors a couple of years .Antenna 
> is insulated with a PVC pipe sleeve .My hand does not effect it till I 
> touch, if only 1/16 inch away .The effect is greater if I touch the one of 
> the u bolts clamping the PVC to the wooden post .The u bolt is insulated 
> from the antenna by the pcv. No effect if I touch the PVC. If I disconnect 
> the base loading and put the analyzer direct to the antenna , resonance is 
> about 8 MHz and touching the u bolt or post has no effect.
>
> Glenn, ww4b at ww4b.net


I suspected that. Try mounting the antenna on large, ribbed stand off 
ceramic insulators to the 4X4. Double thickness on the tubing at the base 
and dont use the PVC will minimize the effect.

Carl
KM1H




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