RE: [amsat-bb] 70 cm preamp

[Mark West <markw@xxxxxxxxxxxxxx>]

If you don't receive 70cm, then a preamp is not usefull.
If you do receive 70, then a preamp at the mast will
negate cable loss, lower the NF,  and thus improve the 
SN ratio of the signal. I use a preamp with my 42 CP yagi.

- Mark West

-----Original Message-----
From: Estes Wayne-W10191 [mailto:W10191@motorola.com]
Sent: Monday, February 26, 2001 11:20 AM
To: amsat-bb@AMSAT.Org
Subject: [amsat-bb] 70 cm preamp


Mark West wrote, about the "$12,500 to burn" station:

Add a 70cm preamp from SSB.

Wayne replies:

When is a preamp needed with a 42-element CP 70 cm Yagi?

That antenna has more than enough gain to hear LEO satellites without a
preamp.  And none of the high-orbit satellites have working 70 cm
transmitters.

Is it useful for certain digital satellites?  (I don't mess with digital
satellites)

Wayne Estes W9AE
Mundelein, IL, USA

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