I would like to pass some comments about this thread.
In the 1950's and 1960's I worked at AM broadcast stations and
would normally see an antenna bleeder system. I recall a 5 kW
station had a 100K-ohm NON-INDUCTIVE resistor at some 100W.
Other stations, typically 1 kW stations, used an RF choke.
Prior responders to this thread said:
> > I use a 1 meg ohm wire-wound 25 watter
> Wire wound??? What freq does that one resonate at?
Good point. The test is to mount your bleeder device (resistor,
RF choke, or >LC network< ) and leave off the wire for the final
connection to your antenna lead. Check the SWR. (We measured
the Z with a bridge at a BC station.) Then connect the bleeder
device and recheck to SWR. If there is no change, then you
know you have a high Z at your operating frequency.
I believe that a bleeder device on a vertical is a must. On a dry snowy
winter day, the discharge of charge from snow flakes can build up the
voltage until it arcs to ground (or through your receiver). I understand
that static build up can even result from dust.
73, Dick Wilder, K3DI
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