[Towertalk] two antennas for same band and rfi

n4kg@juno.com n4kg@juno.com
Tue, 14 Jan 2003 13:45:53 -0600


Sounds like a tough one.

For starters, connect a wattmeter and dummy load to one antenna,
then transmit at maximum power into the other one, rotating the
beam for maximum power transfer.  Then you will know how much
power you must protect for on your second radio.

Tom  N4KG

On Sat, 11 Jan 2003  "FireBrick" <w9ol@billnjudy.com> writes:
> I have a 80/40 dipole, works pretty well for certain directions and
> distances. It hangs from a standoff on the tower.
> Please don't tell me to move it, nowhere to do that.
> 
> I also use my tower as a rotatable dipole. This also works pretty 
> well in certain directions/distances.
> 
> The problem is, due to their proximity, transmitting on one does 
> bring rf
> into the shack even though the switch grounds unused antennas.
> Obviously they are just too close.
> 
> But are there any tricks/stubs/filters, I can do/use to isolate one 
> from the
> other as much as possible?
> 
> I'm counting on you Antennanarians to come up with a magic pill.
> 
> 
> -----------------------------------------------------
> I discovered my family tree was a bonsai.
> -----------------------------------------------------
> 
> W9OL, Bill H. in Chicagoland
> 
> 
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