R: [amsat-bb] Electro-Mavin 2.4 GHz Filter Question

["i8cvs" <domenico.i8cvs@xxxxxx>]

Do not attemp to put your filter between the antenna and preamplifier
input because the filter insertion loss in dB will add to the LNA noise
figure in dB !
In order to stop the L band overload  try to use a preamplifier with a
higher
IP3,third order intercept point and put your filter  between the
preamplifier
output and  the 2400 MHz converter  (LNB) input.
Also increase the distance between the L antenna ad S antenna,infact
the attenuation  from  any antenna is 22 dB at a distance of a wavelength
from it and it increases 6 dB everytime the distance is redoubled
73 de i8CVS Domenico

----- Original Message -----
From: Joe Leikhim <jleikhim@nettally.com>
To: <amsat-bb@AMSAT.Org>
Sent: Monday, May 14, 2001 4:40 AM
Subject: [amsat-bb] Electro-Mavin 2.4 GHz Filter Question


> Has anybody actually measured the insertion loss of these with any
> accuracy? I know the spec was kind of high for IL. What is it really? Is
> anyone using in front of the LNA to stop L band overload?
>
> --
> Joe Leikhim K4SAT
> Jleikhim@nettally.com
>
> http://www.ibiblio.org/jimmy/mcguinn/9000e.ram
>
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> i'm so glad i finished school" -F.Zappa 1967
>
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>
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