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Re: [Amps] Pi vs Pi-L

To: "Mike McCarthy, W1NR" <lists@w1nr.net>,"Jim Kearman" <jkearman@att.net>, "Amps" <amps@contesting.com>
Subject: Re: [Amps] Pi vs Pi-L
From: "Jim Tonne" <tonne@comcast.net>
Date: Wed, 1 Feb 2006 13:13:56 -0500
List-post: <mailto:amps@contesting.com>
Mike wrote:

> Low pass filters only attenuate above 30MHz, so are not adequate 
> to meet the requirements on the lower bands.

I think what was meant here was something along the lines of
"A TVI filter cutting off at 30 MHz is not adequate for the
lower bands."  

If I make a 4 MHz lowpass for my 75-meter rig I can easily design 
it to provide adequate attenuation at the second harmonic and above.

- Jim WB6BLD





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