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R: Electro-Mavin 2.4 GHz Filter Question



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
>
> "tv dinner by the pool,
> i'm so glad i finished school" -F.Zappa 1967
>
> "The Revolution will NOT be televised" -Gil Scott Heron
>
> "Whats he building in there?"- Tom Waits
>
> "The large print giveth
>  and the small print taketh away..." Tom Waits.
>
>
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