[TenTec] OMNI 6 SWR shutdown

Doug Snowden dougn4ij at gmail.com
Wed May 17 12:58:16 EDT 2017 

Shuts down meaning the OMNI 6 shuts of the power supply with zero drive. As other TenTecs, if you reset the condition by turning the power off and back on - the radio comes back up.  My OMNI VII will do the same with too much SWR. The PA transistors always have VCC on them when the radio is turned on, so I doubt they are shorted. Just looking for past experience, if any out there.

Doug N4IJ


Shuts down.....meaning:completely powers off and does not come back on at "key up"? Or....shuts down....meaning:rig stays on, all indications are that it is in TX, but no power output? Or: shuts down, meaning your power supply is going under-voltage, or is itself "shutting down"? I personally would verify voltage INSIDE the rig on TX before I did anything else.
  
  
  
Keep us posted.
  
Greg, KC8HXO


On 5/17/2017 11:00 AM, tentec-request at contesting.com wrote:
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> Today's Topics:
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>     1. Re: Paragon tuning knob needed (k9gaw at juno.com)
>     2. Jupiter (Stan Gammons)
>     3. OMNI 6 SWR shutdown (Doug Snowden)
>     4. Re: OMNI 6 SWR shutdown (Stuart Rohre)
>     5. Re: OMNI 6 SWR shutdown (John King)
>     6. Re: Paragon tuning knob needed (Gary F)
>     7. Re: OMNI 6 SWR shutdown (Greg S)
>     8. Titan III (Charles W. Shaw)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 May 2017 16:37:16 GMT
> From: "k9gaw at juno.com" <k9gaw at juno.com>
> To: tentec at contesting.com
> Subject: Re: [TenTec] Paragon tuning knob needed
> Message-ID: <20170516.093716.4084.0 at webmail09.vgs.untd.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Perry I will have a Drake TR-7 for you to pick up for LST-325 at my Dayton Hamvention flea market spot 7503-7504. My cell # 309-361-3943. Val
>
> ---------- Original Message ----------
> From: w8au at sssnet.com
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] Paragon tuning knob needed
> Date: Sat, 17 Sep 2016 15:52:24 -0400
>
> At 05:55 AM 9/17/2016, you wrote:
>> That is the same knob used right through the Omni VII, so you should be able
>> to get one fairly easily, even from Ten Tec if you want a new one. I see
>> knob sets from rigs like the Omni V on the on-line auctions from time to
>> time.
> Tnx for that info, Vic:  Good to know.
>
> Tnx to the TT community, I had a response this morning from a local
> friend.  Just a short drive and a rag-chew and I'm all set.
>
> Tnx to all that responded.
>
> Perry    w8au
>
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> ------------------------------
>
> Message: 2
> Date: Tue, 16 May 2017 12:30:57 -0500
> From: Stan Gammons <s_gammons at charter.net>
> To: tentec at contesting.com
> Subject: [TenTec] Jupiter
> Message-ID: <58659EBF-A1E4-4087-92AA-B7CBB5C4D201 at charter.net>
> Content-Type: text/plain; charset=utf-8
>
> I finally got back around to messing with the intermittent sensitivity problem I have. After looking at the solder joints on the RF board closer, I see all of them look sort of frosty and wrinkke like a cold solder joint. So, I'm wondering if Ten-Tec had quality problems with some of the Jupiters?   It will  take forever and a day to resolder all of those joints.  Does anyone here have an RF board for a Jupiter you'd want to sell?
>
>
> 73
>
> Stan
> KM4HQE
>
> ------------------------------
>
> Message: 3
> Date: Tue, 16 May 2017 15:13:42 -0500
> From: Doug Snowden <dougn4ij at gmail.com>
> To: tentec at contesting.com
> Subject: [TenTec] OMNI 6 SWR shutdown
> Message-ID: <4f2dc600-6e5c-df17-29a6-463d2c11593a at gmail.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I have an OMNI 6+ that instantly shuts down when keying on CW with no
> output drive or on SSB with mike gain at zero.  It is not an SWR issue.
> Any hints?  Just put it on the bench to start looking at it.  The manual
> describes the ALC circuit pretty well.
>
>
> Doug N4IJ
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 16 May 2017 15:17:56 -0500
> From: Stuart Rohre <Rohre at arlut.utexas.edu>
> To: tentec at contesting.com
> Subject: Re: [TenTec] OMNI 6 SWR shutdown
> Message-ID: <591B5E74.8070404 at arlut.utexas.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Check the ALC or sensor silicon diodes first.
>
> Stuart Rohre
> K5KVH
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 16 May 2017 20:28:38 +0000 (UTC)
> From: John King <k5pgw at yahoo.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] OMNI 6 SWR shutdown
> Message-ID: <276987836.950270.1494966518141 at mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
> I have a number of Ten Tec Xcvrs and I hope it is not shorted final transistors. Do you have the switch in the amps drawn position? I have an Omni VI plus and it has a current drawn position. My Triton IVs, and older Omni shut down with SWR mismatch, finals drawing too much current etc. . I have forgotten the how the protection in my Tenb Tec Scout works.
> Do you have the DRIVE turned down to minimum? With No or Low drive the XCVR should not shut down or throw the breaker.
> I am not a great radioman but have had a lot of shutdowns? .... like when no antenna is connected? !!!!
>
> Let us know what you determine the problem to be. 73, John, K5PGW
>
>
>      On Tuesday, May 16, 2017 3:14 PM, Doug Snowden <dougn4ij at gmail.com> wrote:
>   
>
>   I have an OMNI 6+ that instantly shuts down when keying on CW with no
> output drive or on SSB with mike gain at zero.? It is not an SWR issue.?
> Any hints?? Just put it on the bench to start looking at it.? The manual
> describes the ALC circuit pretty well.
>
>
> Doug N4IJ
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
>     
>
> ------------------------------
>
> Message: 6
> Date: Tue, 16 May 2017 16:33:45 -0500
> From: Gary F <dukeshifi at comcast.net>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] Paragon tuning knob needed
> Message-ID: <8DDB79B5-425A-409E-A807-D68BE7F052D0 at comcast.net>
> Content-Type: text/plain;	charset=us-ascii
>
> I have maybe 6 of these.
>
> All are nice condition.
>
> $18 each shipped in CONUSA.
>
> Gary
>
> Sent from my iPad
>
>> On May 16, 2017, at 11:37 AM, "k9gaw at juno.com" <k9gaw at juno.com> wrote:
>>
>> Perry I will have a Drake TR-7 for you to pick up for LST-325 at my Dayton Hamvention flea market spot 7503-7504. My cell # 309-361-3943. Val
>>
>> ---------- Original Message ----------
>> From: w8au at sssnet.com
>> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>> Subject: Re: [TenTec] Paragon tuning knob needed
>> Date: Sat, 17 Sep 2016 15:52:24 -0400
>>
>> At 05:55 AM 9/17/2016, you wrote:
>>> That is the same knob used right through the Omni VII, so you should be able
>>> to get one fairly easily, even from Ten Tec if you want a new one. I see
>>> knob sets from rigs like the Omni V on the on-line auctions from time to
>>> time.
>> Tnx for that info, Vic:  Good to know.
>>
>> Tnx to the TT community, I had a response this morning from a local
>> friend.  Just a short drive and a rag-chew and I'm all set.
>>
>> Tnx to all that responded.
>>
>> Perry    w8au
>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>> ____________________________________________________________
>> Affordable Wireless Plans
>> Set up is easy. Get online in minutes.
>> Starting at only $14.95 per month!
>> www.netzero.net?refcd=nzmem0216
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> ------------------------------
>
> Message: 7
> Date: Tue, 16 May 2017 17:44:51 -0400
> From: Greg S <oldlongbeard at yahoo.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] OMNI 6 SWR shutdown
> Message-ID: <28440877-20ac-4a94-9110-1e774417c499 at Gregs-iPad>
> Content-Type: text/plain; charset="utf-8"
>
>   
>   
> Shuts down.....meaning:completely powers off and does not come back on at "key up"? Or....shuts down....meaning:rig stays on, all indications are that it is in TX, but no power output? Or: shuts down, meaning your power supply is going under-voltage, or is itself "shutting down"? I personally would verify voltage INSIDE the rig on TX before I did anything else.
>   
>   
>   
> Keep us posted.
>   
> Greg, KC8HXO
>   
>   
>   
>
>   
>   
>>   
>> On May 16, 2017 at 16:13,  <Doug Snowden (mailto:dougn4ij at gmail.com)>  wrote:
>>   
>>   
>>   
>>   
>>   I have an OMNI 6+ that instantly shuts down when keying on CW with no
>> output drive or on SSB with mike gain at zero. It is not an SWR issue.
>> Any hints? Just put it on the bench to start looking at it. The manual
>> describes the ALC circuit pretty well.
>>
>> Doug N4IJ
>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>           
> ------------------------------
>
> Message: 8
> Date: Tue, 16 May 2017 23:54:44 +0000
> From: "Charles W. Shaw" <chasshaw at leaco.net>
> To: tentec at contesting.com
> Subject: [TenTec] Titan III
> Message-ID: <201705161754741.SM781383 at RadioDesk13.leaco.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> Hello to All,
>
> I am considering parting with my Ten-Tec Titan III (Model 417A)
> amplifier S/N 12C10096 purchased from the factory in February
> 2008.  It has the original pair of Svetlana 4CX800A tubes which
> provide max legal output.  Included are the original manual in
> superior condition as well as all the goodies which came with
> it.  (Spare fuses, tube chimney clamps, hex wrenches, an extra
> ten-meter input board, and the factory shipping boxes.)
>
> The amp is in excellent condition (9++), no scratches or dings, and
> has only been used in a non-smoking environment.  I've never had any
> problem with it, and it performs as it should.  My reason for
> considering selling is my age--it weighs more than I want to lift--84
> lbs.  (More than half my weight!)  Shipping would be a problem, so I
> would much prefer that it be picked up at my home in Hobbs, NM.
>
> Browse for info:
> Ten-Tec Wiki:  http://www.tentecwiki.org/doku.php?id=417a
> Pictures:      http://www.rigpix.com/linears/tentec_titaniii417a.htm
>
> Reviews:       March 2004 QST,  and
>                  http://www.eham.net/reviews/detail/3152
> Manual:
> http://www.tentec.com/wp-content/uploads/2016/05/417A_MANUAL_Ga565.pdf
>
> If this might interest you, contact me only at MY email
> address:  chasshaw at leaco.net
> Or make an offer if you want to.
>
> 73,
> Charles W. Shaw - N5UL
> Hobbs, NM
>
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>
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