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Re: false signals-images-harmonics-whatever? TKS



Thanks to everyone who made suggestions.  I now have about 5 different
things to try.  I am amazed at the resource this BBS is . . . what a
wonderful thing.  I got 9 unique replies each with something a little
different to try.

I will report back as to my results.  Thanks again and Happy New Year . . .
maybe Peace on Earth but probably not.

73's  Tracy K7KCS

----- Original Message -----
From: "Tracy" <k7kcs@attbi.com>
To: <amsat-bb@AMSAT.Org>
Sent: Thursday, December 27, 2001 9:43 AM
Subject: [amsat-bb] false signals-images-harmonics-whatever?


> Hi all,
>
> I have a Down East Microwave 2400-144RX downconverter.  It works but I am
> receiving many false signals (images?) of my transmitted 435 Mhz signal
(50
> watts) all over the AO-40 passband which makes it hard to hear my real
> signal.  The tranceiver is a IC-910H so I expect it is reasonably clean
and
> 435 does not produce these images on 144.  The 435 antenna is a M2
420-50-11
> yagi 4 feet from the dish which has a helix feed and the downconverter
> mounted directly on the helix.
>
> How do I get rid of these images/signals? Would buying a more expensive
> downconverter (say the SSB electronics UEK-3000) improve things?  In
> general, what do you get for the extra bucks?  Just a little less noise
and
> a few DB gain or more than that?
>
> Thanks for reading this !
>
> 73's  Tracy K7KCS
>
>
> ----
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