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Topband: Flag Antenna Feedline Decoupling

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Subject: Topband: Flag Antenna Feedline Decoupling
From: Michael Tope" <W4EF@dellroy.com (Michael Tope)
Date: Sun, 10 Dec 2000 14:14:48 -0800
I am getting ready to build a set of flag transformers and had plan
to put a string of ferrite beads on the feedline to decouple it from
the antenna. Can anyone tell me how many beads I should use to
get adequate decoupling? I will be using Amidon FB-73-2401 beads
(ui = 2000, thickness 0.2"). I was thinking that 25 would be a good
number (~300 ohms series impedance at 1.8 MHz).

Thanks,

Mike, W4EF..........................................


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