> Subject: Topband: 160 AM BCB filter
>
> Nice filter for AM (1700 KHz) station reduction.
>
> http://www.dallas.net/~jvpoll/Filter/TheAMBrickWall.html
>
With .7 or .8 dB insertion loss, the power dissipation is
something like 15%. The writeup seems to claim it can
be used in the transmit path. It would get fairly warm
in a contest at 150W, and probably overheat at 1500W.
OK as a receive only filter. Any serious 160 meter station
has a separate receive antenna path anyway.
I find that it is easier to build a 160 meter bandpass
filter than a high pass filter as described above. Especially
if you only require 1.8 to 1.912 MHz. I've never operated
above that.
Rick N6RK
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