[TenTec] Paragon: Too low power

[Alec Otulak]

Vic,

thanks a lot for Your feedback.

Yes, the problem is pretty unusual especially when I read
notes of those people who were/are not able to properly
balance the modulator.
No carrier is detectable here. As to distorted audio,
it is a bit difficult for me to say anything about that,
it probably is. However, nobody has complained so far.
Too low power has hit the CW too and it is the biggest
concern of mine.

What is worth adding is that feeding FM signal which,
enters the chain at a point located after the 9 MHz SSB filter,
all seems to work just fine.

I had sent some enquiries to service at tentec.com. Since they
did not responded I forwarded them a fax yesterday too.
Let's see..


Anyway, Vic,
big thanks again..

Yours,
Alec







-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of Vic Klein
Sent: Thursday, February 22, 2007 3:08 AM
To: tentec at contesting.com
Subject: Re: [TenTec] Paragon: Too low power

You seem to have an unusual problem, Alec. It might be helpful to also email
service at tentec.com and see if they could help with your question. Is the
only problem that it is a bit low in power output, or are there any other
symptoms such as rsidual carrier or distorted audio?

=Vic=
WA4THR
----------------------------------------------------------------------------
------
To:  "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Subject:  [TenTec] Paragon: Too low power
From:  "Alec Otulak" <sp2ewq at wp.pl>
Reply-to:  Discussion of Ten-Tec Equipment <tentec at contesting.com>
Date:  Wed, 21 Feb 2007 19:28:08 +0100
List-post:  <mailto:tentec at contesting.com>

Hi all,

I have got Paragon 585 which was bought new straight from Ten-Tec.
It suffered from some sort of shock some time later and I have not
been able to cure it since then.

I simply cannot make it deliver more than 70 Wtts. Now I narrowed,
as I think, the problem to the TX/AUDIO/BFO board.
I found out that the output level on connector 37 is too low
and, later on, that there is no way to make the balanced modulator U5
(CA3053E)
go un-balanced. At first, I thought it might be the problem with the chip
(CA3053E),
so I replaced it, but it has changed nothing.

Is there any possibility someone could tell me what Vrms is present
on lead2 of U5, or give any other idea what might be the cause the
outgoing DSB signal is so low on that board,
please ?

Yours,
Alec




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