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Re: [TenTec] Paragon Finals and other woes

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Paragon Finals and other woes
From: Greg S via TenTec <tentec@contesting.com>
Reply-to: Greg S <oldlongbeard@yahoo.com>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 29 Jan 2019 14:38:37 +0000 (UTC)
List-post: <mailto:tentec@contesting.com>
Personally, I would suggest an Eagle, but agree on other salient points. If you 
aren't  capable of repairing yourself, or have $$ to pay more than market value 
to  have someone else repair them, these older TT rigs are not going to make 
you very happy long term.

Greg, KC8HXO
--------------------------------------------
On Tue, 1/29/19, Phil Erickson <phil.erickson@gmail.com> wrote:

 Subject: Re: [TenTec] Paragon Finals and other woes
 To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
 Date: Tuesday, January 29, 2019, 8:57 AM
 
 Hi all,
 
 Every Omni VI I've picked up over the past
 few years, all five of them,
 > have had
 issues... some subtle, some major. I will eventually just
 keep the
 > best two on the operating
 bench, and keep two for spares. The earlier VI
 > will get sold. I think almost any vintage
 TenTec should be approached with
 > the
 expectation that there will be a problem in the rig if you
 look hard
 > enough, or there will be one
 soon.
 
 
  
 Speaking as a person still in the middle of several very
 puzzling
 problems on a VI+ (which have been
 detailed here and which have received a
 great amount of help - thanks), I can
 definitely amplify Pete's statement.
 If
 you look at these rigs as a great RF troubleshooting and
 learning tool,
 you'll be happy. 
 Sometimes, the problems even morph and change shape on
 you as you repair one of them.  However, if
 you want something that just
 works, I would
 suggest an IC-7300 and move on with life.
 
 73
 Phil
 W1PJE
 
 
 On
 Tue, Jan 29, 2019 at 8:43 AM Peter Bertini <radioconnection@gmail.com>
 wrote:
 
 > If
 the PL issues are resolved, I'd fix the radio, or sell
 it for parts.
 >
 > The
 Paragon rigs are aging beasts, and even buying another
 Paragon may mean
 > you end up with TWO
 parts radios in short order!
 >
 > But, back to this unit. My only experience
 is with my Paragon II, which is
 > a more
 reliable radio.
 >
 >
 The TenTen power supply should be repaired and used with the
 radio. It
 > provides high current
 limiting which protects the expensive finals from low
 > impedance loads. The Astron would be 
 poor choice.
 >
 >
 Regarding the MRF-458 transistors, it is my understanding
 that the MRF-454
 > devices have similar
 gain, but are rated for higher collector currents. You
 > may want to check around with someone with
 more knowledge to see if the
 > MRF-454
 would be more reliable.
 >
 > The short on the DC bus could be related
 to other work, a pinched wire,
 > etc. 
 I'd want to prove that the PA was the cause of the short
 before
 > taking any drastic action, or
 needlessly replacing expensive PA
 >
 transistors.
 >
 > Every
 Omni VI I've picked up over the past few years, all five
 of them,
 > have had issues... some
 subtle, some major. I will eventually just keep the
 > best two on the operating bench, and keep
 two for spares. The earlier VI
 > will get
 sold. I think almost any vintage TenTec should be approached
 with
 > the expectation that there will be
 a problem in the rig if you look hard
 >
 enough, or there will be one soon.
 >
 > regards
 >
 > Pete  k1zjh
 >
 _______________________________________________
 > TenTec mailing list
 >
 TenTec@contesting.com
 > http://lists.contesting.com/mailman/listinfo/tentec
 >
 
 
 -- 
 ----
 Phil
 Erickson
 phil.erickson@gmail.com
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