[TenTec] Re: Paragon Question - Lack of sensitivity

[Steve Baron - KB3MM]

I had ordered two replacement reed relays for my OMNI V.

Just arrived and they are made by:
USRelays and Technology.  Model:B1a05Y400DIC

----- Original Message ----- 
From: "Edward A. Feustel" <efeustel at direcway.com>
To: <tentec at contesting.com>
Sent: Wednesday, February 02, 2005 10:24
Subject: [TenTec] Re: Paragon Question - Lack of sensitivity


> t
>
> >
> > Subject:
> > RE: [TenTec] Paragon question
> > From:
> > "Scott Prather" <sdprat at worldnet.att.net>
> > Date:
> > Tue, 1 Feb 2005 18:45:59 -0800
> > To:
> > <tentec at contesting.com>
> >
> > To:
> > <tentec at contesting.com>
> >
> >
> >Paul-This problem is almost certainly related to the filter relays on the
> >LPF board.  Early Paragons used reed relays to select the LPFs, but this
was
> >a pretty expensive approach.  As a result, in later units Ten-Tec started
> >using inexpensive frame relays instead.  I had a Paragon that would do
the
> >same thing you describe only on the 80 M band, and lightly tapping the
top
> >of the cabinet near the PA heat sink would bring signals back to normal.
> >
> >The relays are available from Digikey, they only cost about $1.35 each.
If
> >you decide to replace the defective relay, I highly recommend that you
> >replace all 14, it's a lot of work to get the LPF board out and I can
almost
> >guarantee that another one will probably fail if you leave the other
> >originals in place. However, check to see what type of relays you have
> >first.  You wouldn't want to replace all 14 if your LPF board uses reed
> >relays.
> >
> >Scott
> >N7NB
> >
> >-----Original Message-----
> >From: tentec-bounces at contesting.com
> >[mailto:tentec-bounces at contesting.com]On Behalf Of
> >ultrafixedwing at juno.com
> >Sent: Tuesday, 01 February, 2005 17:00
> >To: tentec at contesting.com
> >Subject: [TenTec] Paragon question
> >
> >
> >
> >If I tune up from 6.000 mHz, when I hit 6.500 there is a click and the
> >signal strength drops way, way off. I can hear signals very faint. I
> >continue up to 10.500 and it clicks and signal strength kicks back up.
Any
> >ideas how to cure this?
> >Thanks,
> >Paul
> >KS2S
> >
> >
> >
> This problem can also be due to the front end switching diodes. I have
> had the problem twice in my Paragon II.
> Check to make certain that the diodes on the 6.5-10.5 section are still
> good. If one set is burned out, it is likely that more are, so check the
> rest of the bpf diodes while you are at it. I gather they are quite
> inexpensive and you can install them yourself.  (I wound up sending my
> Paragon II back to the factory for check ups.)
> Regards,
> Ed, N5EI
>
>
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