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Re: [TenTec] Omni VI+ receiver UHF intermod

To: <tentec@contesting.com>
Subject: Re: [TenTec] Omni VI+ receiver UHF intermod
From: "Jack Mandelman" <modeler@bellsouth.net>
Reply-to: Jack Mandelman <modeler@bellsouth.net>,Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 12 Dec 2007 19:01:35 -0500
List-post: <mailto:tentec@contesting.com>

Guess I'll let the external LPF do the work and not add an internal LPF 
on the receive side.  Should be very easy mod, but  I'll leave the radio 
as original as possible.

Jack K1VT

----- Original Message ----- 
From: "Paul Christensen" <w9ac@arrl.net>
To: "'Jack Mandelman'" <modeler@bellsouth.net>; "'Discussion of Ten-Tec 
Equipment'" <tentec@contesting.com>
Sent: Wednesday, December 12, 2007 6:51 PM
Subject: RE: [TenTec] Omni VI+ receiver UHF intermod

>"I was able to eliminate the intermod by inserting an old Johnson 
>Viking LP
filter in
front of the Omni VI+. Has anyone encountered or heard of a similar UHF
intermod problem with the Omni VI?

Jack K1VT"

Déjà vu.

I ran into the exact issue back in '92 when I purchased my Omni Six.  I 
a Nye Viking low-pass TVI filter to eliminate everything received above 

I traced my source of interference to a couple local TV and FM broadcast
transmitters.  Not sure why the front end was susceptible to 
VHF, but an internal LPF right at the front of the Rx would have been a
welcome addition.

Paul, W9AC

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