Yes Ian, but there is something very important connected to this: you get
with some antennas a much lower background noise level when the antenna is
DC connected to ground.
My very long wire, endfed against my water pipe and matched with the
variable capacitive divider in a Johnson matchbox, had no DC connection
against ground and I also had flashovers when there was a thunderstorm
around.I thus got early warnings, very practical!The only way the antenna
could discharge, was a flash over or across the ceramic insulation in the
capacitive divider. I thus got piezo effects making the high noise level.
The solution was simple: connected a National R 175A choke from antenna to
ground,the static was discharged and got a much lower noise background.
73s de Hans SM5KI
----------
>Från: "Hans Goldschmidt" <sm5ki@algonet.se>
>Till: amps@contesting.com
>Ämne: <inget ämne>
>Datum: tor 12 aug 1999 10.10
>
>
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