[TenTec] Mystery filter - answer and thanks
GeneN8KUA@aol.com
GeneN8KUA@aol.com
Thu, 3 Dec 1998 20:48:14 EST
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Thanks, there was unanimity, all thought it was likely the 2.7 khz 4 pole
filter found in earlier rigs, like the Corsair I, and Ken, W8EK confirmed that
48057 is the T-T internal part number for the filter.
Some asked how I like the INRAD 400 Hz filters. I do, but haven't had the
opportunity to compare them to the T-T/NS versions. With all the filter
positions on the Omni VI+'s, it might be fun for someone to load each IF with
one of each and see if other ops (unaware of just where the filters got
placed) can tell the difference and have a preference.
Thanks & 73 Folks!
Gene N8KUA
Arlington, TX
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Reply-To: "Ken Simpson" <W8EK@usa.net>
From: "Ken Simpson" <W8EK@usa.net>
To: <GeneN8KUA@aol.com>
Subject: Re: [TenTec] Mystery filter
Date: Tue, 1 Dec 1998 19:38:36 -0500
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If it only has four xtals in it, it is the original SSB filter than came
in very early Corsairs, and also very early Argosy. The filter was often
replaced with an 8 pole filter for more selectivity. Sometimes the user
would move the 4 pole filter (like you have) to an extra empty slot, and
have 12 poles of filtering.
By the way, we sold quite a few of these units, and were also a warranty
service center for TenTec "when TenTec had dealers."
The 48057 is TenTecs internal part number for the filter.
73,
Ken, W8EK
Ken Simpson
E-Mail to W8EK@usa.net or W8EK@fdt.net
http://www.gnv.fdt.net/~kenmar
Voice Phone (352) 732-8400
-----Original Message-----
From: GeneN8KUA@aol.com <GeneN8KUA@aol.com>
To: Tentec@contesting.com <Tentec@contesting.com>
Date: Tuesday, December 01, 1998 7:14 PM
Subject: [TenTec] Mystery filter
>
>Dear Ten-Tecnophiles,
>
>I'm the happy new owner of a nice Omni V (my first T-T rig). When I
installed
>the 400 Hz INRAD filter in the 9 MHz IF, I removed a mystery filter. I
don't
>think it's a CW filter. Anyway, it looks to be on a standard T-T filter
>circuit board (faint red T-T logo and "6840" on the bottom. It has only
4
>crystals mounted on it. Two of them are marked: one (on one end) with
the
>numbers "8315" and another (other end) with "48057" (or possibly "4805/")
. 5
>capacitors between the Xtals and ground. Nothing like it on the
"Unofficial
>Ten-Tec Pages" and none of the numbers match T-T filter models I'm aware
of.
>Any clues? So far I've been too busy playing with the radio as I've
>configured it to bother plugging the mystery filter in to see what it
sounds
>like. Guess that'll be next unless I get a positive ID.
>
>Thanks,
>
>Gene Freund
>N8KUA
>Arlington, TX
>
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