From: Al Simcoe (alsimcoe@alsimcoe.com)
Date: Fri Feb 28 2003 - 11:01:27 EST
All I can say is that building a preamp for VHF is *VERY* difficult.
Component choice and layout is very critical and so is the casing
material, otherwise you will build a real nifty noise generator !!
Good luck !!
Al Simcoe
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Al Simcoe (BluMax)
alsimcoe@alsimcoe.com
alsimcoe@simcom-technologies.com
alsimcoe@muskokamug.org
www.alsimcoe.com
ICQ- 53663021
-----Original Message-----
From: pcr-1000-admin@mailman.qth.net
[mailto:pcr-1000-admin@mailman.qth.net] On Behalf Of rtv
Sent: Friday, February 28, 2003 10:45 AM
To: pcr1000
Subject: [PCR-1000] RFI
My passion of late is trying to get good pix from the noaa sats. Ive
been running into interference a lot.
i've built 2 antennas (QHA QFH) and built a preamp for 137mhz only to
find it just shows more interference. I have a good spectrum analyzer
(tek 496) and sometimes it agrees with the radio.. many times not. is
there a good way to determine whether a signal is real or a birdie or a
harmonic created by the preamp? sometimes i see a rather broad band
signal (maybe 35khz) pulsing right in the neighborhood of 137.5 i'll
see it on both the pcr1000 and an icom r9000 but it doesn't show on the
tek! but in general its all over the place low level but just enough to
keep my pix from being perfect.
any help would be
appreciated
rtv
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