[TenTec] TenTec Digest, Vol 162, Issue 22
Michael Rutkaus
mrutkaus at gmail.com
Sat Jun 18 12:45:22 EDT 2016
The OMNI VII I was complaining about and getting lots of help on, will be
back to TenTec Monday. I did find the unsoldered swaged connections and
soldered them but it made no difference. Also took it out of its ventilated
enclosure and put it out in the open, no difference, still infinite SWR and
shut down after sending dits and dahs for 15min at 88 watts into a dummy
load.
Most expensive radio i'd every bought!
Thanks for all the help, I'll report when (>>>) it is fixed.
73
Mike
K4QET
On Sat, Jun 18, 2016 at 12:00 PM, <tentec-request at contesting.com> wrote:
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> Today's Topics:
>
> 1. Re: TenTec Digest, Vol 162, Issue 21 (Michael Rutkaus)
> 2. Re: TEN TEC 960 Power Supply Capacitor (Reeve Family)
> 3. Re: TEN TEC 960 Power Supply Capacitor (Curt Gamble)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Jun 2016 13:18:16 -0400
> From: Michael Rutkaus <mrutkaus at gmail.com>
> To: tentec at contesting.com
> Subject: Re: [TenTec] TenTec Digest, Vol 162, Issue 21
> Message-ID:
> <CAF0TZQdF8y7LMW+W2nqYMxt+A=_itLv5=
> 7C-aVznqdzJ3QaK3Q at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> STUART! Thanks for the encouragement. I'll keep everyone up to date. My
> latest theory is excessive heat does something to the 'swaged' SO-239
> antenna connections. So it's sitting out i the open now all day receiving
> with me operating into a dummy load now and then. I guess I should do as
> someone said and just leave it on at 90 watts for an hour into a dummy
> load, that should give some sort of answer. i'm workign up to it!! ha ha
>
> 73 thanks for all the input
> Mike Rutkaus
> K4QET
>
> On Fri, Jun 17, 2016 at 12:00 PM, <tentec-request at contesting.com> wrote:
>
> > Send TenTec mailing list submissions to
> > tentec at contesting.com
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > http://lists.contesting.com/mailman/listinfo/tentec
> > or, via email, send a message with subject or body 'help' to
> > tentec-request at contesting.com
> >
> > You can reach the person managing the list at
> > tentec-owner at contesting.com
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of TenTec digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: Omni VII SWR (k8mp at aol.com)
> > 2. Re: OMNI VII SWR going high--heat releated (Stuart Rohre)
> > 3. Re: OMNI VII SWR going high--heat releated (Al Gulseth)
> > 4. Re: Omni VII SWR (Greg S)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Thu, 16 Jun 2016 12:06:39 -0400
> > From: k8mp at aol.com
> > To: tentec at contesting.com
> > Subject: Re: [TenTec] Omni VII SWR
> > Message-ID: <15559f6de5c-1daf-1727 at webprd-m87.mail.aol.com>
> > Content-Type: text/plain; charset=utf-8
> >
> > Hi Mike,
> > Take that combo to FD and run 24 hours of CW in 90 degree weather.
> That'll
> > tell you if you nailed it. :)
> > Good luck with it.
> > Joe, K8MP
> >
> > Sent from AOL Mobile Mail
> >
> >
> > -----Original Message-----
> > From: Michael Rutkaus <mrutkaus at gmail.com>
> > To: tentec <tentec at contesting.com>
> > Sent: Thu, Jun 16, 2016 11:49 AM
> > Subject: [TenTec] Omni VII SWR
> >
> >
> >
> > hmmm. The Alinco DM-340MV analog 12 power suppy might have been bumped up
> > to
> > slightly over 14v on its adjustment knob. i've lowered that to 12v and
> kept
> > a small fan blowing over the unit and it seems ok right now after a 2 hr
> > test. Makes sense. At this point don't know if it needs the extra fan
> > blowing from the back or the lowered input voltage, or both.
> >
> > Kinda stupid, I know.
> >
> > Mike
> > K4QET
> >
> >
> > ---
> > This email has been checked for viruses by Avast antivirus software.
> > <a href="https://www.avast.com/antivirus" target="_blank">
> > https://www.avast.com/antivirus</a>
> >
> > _______________________________________________
> > TenTec mailing list
> > <a href="mailto:TenTec at contesting.com">TenTec at contesting.com</a>
> > <a href="http://lists.contesting.com/mailman/listinfo/tentec"
> > target="_blank">http://lists.contesting.com/mailman/listinfo/tentec</a>
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Thu, 16 Jun 2016 14:55:36 -0500
> > From: Stuart Rohre <rohre at arlut.utexas.edu>
> > To: tentec at contesting.com
> > Subject: Re: [TenTec] OMNI VII SWR going high--heat releated
> > Message-ID: <57630438.5000500 at arlut.utexas.edu>
> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >
> > Can you set the rig on top of the bookcase and try its heating up there?
> > Sounds like 2.5 inch clearance is NOT enough.
> >
> > Stuart
> > K5KVH
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Thu, 16 Jun 2016 20:14:22 -0500
> > From: Al Gulseth <wb5jnc at centurytel.net>
> > To: tentec at contesting.com
> > Subject: Re: [TenTec] OMNI VII SWR going high--heat releated
> > Message-ID: <201606162014.22728.wb5jnc at centurytel.net>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > I'm inclined to agree with Stuart - in my book it's not a good idea to
> put
> > a
> > piece of equipment in a "claustrophobic" (if you get my drift) enclosure
> > without LOTS of forced air flow unless the manufacturer has specifically
> > designed the device to withstand that sort of environment.
> >
> > 73, Al
> >
> > On Thu June 16 2016 2:55:36 pm Stuart Rohre73, wrote:
> > > Can you set the rig on top of the bookcase and try its heating up
> there?
> > > Sounds like 2.5 inch clearance is NOT enough.
> > >
> > > Stuart
> > > K5KVH
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Fri, 17 Jun 2016 14:43:55 +0000 (UTC)
> > From: Greg S <oldlongbeard at yahoo.com>
> > To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> > Subject: Re: [TenTec] Omni VII SWR
> > Message-ID:
> > <5954886.5268190.1466174635674.JavaMail.yahoo at mail.yahoo.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Mike- I should think a slightly higher voltage as you listed would be
> > fine, as current drops with a rise in supply VDC. It is well within
> specs.
> > I would be sure no ancillary equipment (Other than Mic and/or key and
> dummy
> > load) are plugged in, and see if the situation changes. I would also
> > measure that supply voltage with a meter (Scope to look for excessive
> > ripple would be better) at the rig. (In-line fuses/fuse holders have been
> > known to cause these type of erratics lately on other equipment..... be
> > sure to eliminate them as a cause.) If problem persists with rig in free
> > air, I am out of ideas for now. Please report back to the list as you
> have
> > time.
> >
> > 73-
> > Greg, KC8HXO
> > --------------------------------------------
> > On Thu, 6/16/16, Michael Rutkaus <mrutkaus at gmail.com> wrote:
> >
> > Subject: [TenTec] Omni VII SWR
> > To: tentec at contesting.com
> > Date: Thursday, June 16, 2016, 11:47 AM
> >
> >
> > hmmm. The Alinco DM-340MV analog 12 power suppy might have
> > been bumped up to
> > slightly over 14v on its adjustment knob. i've lowered that
> > to 12v and kept
> > a small fan blowing over the unit and it seems ok right now
> > after a 2 hr
> > test. Makes sense. At this point don't know if it needs the
> > extra fan
> > blowing from the back or the lowered input voltage, or
> > both.
> >
> > Kinda stupid, I know.
> >
> > Mike
> > K4QET
> >
> >
> > ---
> > This email has been checked for viruses by Avast antivirus
> > software.
> > https://www.avast.com/antivirus
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >
> > ------------------------------
> >
> > End of TenTec Digest, Vol 162, Issue 21
> > ***************************************
> >
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 17 Jun 2016 16:37:34 -0400
> From: "Reeve Family" <reevefamily at cogeco.ca>
> To: <TenTec at contesting.com>
> Subject: Re: [TenTec] TEN TEC 960 Power Supply Capacitor
> Message-ID: <001301d1c8d8$144f2f80$3ced8e80$@ca>
> Content-Type: text/plain; charset="us-ascii"
>
> As advised, I replaced the overheating filter capacitor in my TEN TEC 960
> power supply along with all of the 4 other electrolytics on the main
> circuit
> board and now the power supply is like new.no more overheating or burning
> smell. On removal, I discovered that the filter capacitor was starting to
> leak around the ground side mounting bolt which was partially fused around
> the threads making it somewhat difficult to get out.
>
>
>
> I replaced the original 47,000 uF, 40V filter capacitor with a 50,000 uF,
> 75
> V unit that was exactly the same dimensions as the original (2-1/2" dia. X
> 4-1/8" tall, and 1-1/8" pin spacing). As it turns out the PCB pads are
> plenty large with sufficient room around the capacitor on the TT-960, that
> you could probably drill a new hole if needed to accommodate a different
> size capacitor. Also good news, I only needed to partially disassemble the
> power supply in order to gain sufficient access to the underside of the
> main
> circuit board to allow removal of the filter capacitor mounting bolts. This
> did not require having to unsolder and of the heavy transformer leads or
> components other than the capacitors. The only other thing I needed in
> addition to the capacitors was a small tube of heat sink thermal paste for
> the large 4-terminal rectifier that is bolted to the chassis.
>
>
>
> I had to order filter capacitor through eBay as many suppliers in the U.S.
> would not ship directly to Canada. The shipment arrived in 4 days from
> Hauppauge NY which I thought amazing.
>
>
>
> With the main PCB only partially removed I was able to access and replace
> all of the electrolytic capacitors while I was at it, even though the other
> caps on the board appeared to be OK.
>
>
>
> Original capacitors on the main board were as follows;
>
>
>
> 47,000 uF, 40V Large Can Filter Capacitor (1)
>
>
>
> 4700 uF, 35V (1)
>
>
>
> 220 uF, 16V (1)
>
>
>
> 33 uF, 35V (1)
>
>
>
> 4.7 uF, 50V (1)
>
>
>
> Overall the repair was relatively easy, and I am pleased with the results.
>
>
>
> 73,
>
>
>
> Rick VE3ORY
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 17 Jun 2016 15:07:58 -0600
> From: Curt Gamble <W0ALC at MINDSPRING.COM>
> To: tentec at contesting.com
> Subject: Re: [TenTec] TEN TEC 960 Power Supply Capacitor
> Message-ID: <a6266554-b2e8-2550-2be9-265b27c0161e at MINDSPRING.COM>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> I built a home brew amp, pair of 3-500A's 40 years ago and after about
> 25 years the computer grade
>
> Caps became power resistors and took out some diodes. Sad story was I
> paid $2.32 each 40 years ago
>
> and the new ones cost ~ $23.00 each so hope they last a long time.
> SMILE. Happy owner of two Orion II's.
>
> 73, Curt W?ALC (Western CO)
>
>
> On 6/17/2016 2:37 PM, Reeve Family wrote:
> > As advised, I replaced the overheating filter capacitor in my TEN TEC 960
> > power supply along with all of the 4 other electrolytics on the main
> circuit
> > board and now the power supply is like new.no more overheating or
> burning
> > smell. On removal, I discovered that the filter capacitor was starting to
> > leak around the ground side mounting bolt which was partially fused
> around
> > the threads making it somewhat difficult to get out.
> >
> >
> >
> > I replaced the original 47,000 uF, 40V filter capacitor with a 50,000
> uF, 75
> > V unit that was exactly the same dimensions as the original (2-1/2"
> dia. X
> > 4-1/8" tall, and 1-1/8" pin spacing). As it turns out the PCB pads are
> > plenty large with sufficient room around the capacitor on the TT-960,
> that
> > you could probably drill a new hole if needed to accommodate a different
> > size capacitor. Also good news, I only needed to partially disassemble
> the
> > power supply in order to gain sufficient access to the underside of the
> main
> > circuit board to allow removal of the filter capacitor mounting bolts.
> This
> > did not require having to unsolder and of the heavy transformer leads or
> > components other than the capacitors. The only other thing I needed in
> > addition to the capacitors was a small tube of heat sink thermal paste
> for
> > the large 4-terminal rectifier that is bolted to the chassis.
> >
> >
> >
> > I had to order filter capacitor through eBay as many suppliers in the
> U.S.
> > would not ship directly to Canada. The shipment arrived in 4 days from
> > Hauppauge NY which I thought amazing.
> >
> >
> >
> > With the main PCB only partially removed I was able to access and replace
> > all of the electrolytic capacitors while I was at it, even though the
> other
> > caps on the board appeared to be OK.
> >
> >
> >
> > Original capacitors on the main board were as follows;
> >
> >
> >
> > 47,000 uF, 40V Large Can Filter Capacitor (1)
> >
> >
> >
> > 4700 uF, 35V (1)
> >
> >
> >
> > 220 uF, 16V (1)
> >
> >
> >
> > 33 uF, 35V (1)
> >
> >
> >
> > 4.7 uF, 50V (1)
> >
> >
> >
> > Overall the repair was relatively easy, and I am pleased with the
> results.
> >
> >
> >
> > 73,
> >
> >
> >
> > Rick VE3ORY
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> ------------------------------
>
> End of TenTec Digest, Vol 162, Issue 22
> ***************************************
>
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