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## Re: [TenTec] Ten-Tec 411 Centaur Amp Problem

 To: , "Discussion of Ten-Tec Equipment" Re: [TenTec] Ten-Tec 411 Centaur Amp Problem "CSM\(r\) Gary Huber" Discussion of Ten-Tec Equipment Thu, 27 May 2010 13:58:01 -0500 mailto:tentec@contesting.com>
 ```Not much to that input circuit.... see it at http://www.tentec.com/files/Model%20411%20Centaur%20Owner%20Manual.pdf 73, Gary - AB9M -------------------------------------------------- From: "Dr. Gerald N. Johnson" Sent: Thursday, May 27, 2010 1:47 PM To: Subject: Re: [TenTec] Ten-Tec 411 Centaur Amp Problem > That would tend to indicate the cathode circuit tuning is out of whack > on 40 meters, whether it just needs tuning or some parts have change > value, is what you have to find next. > > 73, Jerry, K0CQ > > On 5/27/2010 1:14 PM, Kris Merschrod wrote: >> Rick, Thank you - I'LL ANSWER THE QUESTIONS IN CAPS. >> >> Kris KM2KM >> >>> Need more info: >>> >>> 1. Have you tried it on a dummy load? If so, was it OK, or also 375w on >>> 40m? >> YES, SAME PROBLEM >>> >>> 2. Did this suddenly occur, or has it always been this way? Or is it new >>> and being tried first time? >> IT HAS BEEN THIS WAY FOR A LONG TIME. ABOUT FOUR MONTHS AGO I REPLACED THE >> TUBES WITH A MATCHED SET - SAME PROBLEM >> >>> >>> 3. What transceiver are you driving it with? >> TEN TEC DELTA II >>> >>> 4. What is the SWR between the transceiver and the Linear on each of >>> these >>> bands? >> >> BINGO 3:1 ON 40 METERS NO SWR ON THE OTHERS WHEN IN LINE WITH THE AMP ON >> AND TUNED UP >>> >>> 5. What is the output of your transceiver on each of these bands? (If >>> it's >>> down on 40, then the issue is not the linear). >> >> OK, IT IS CUTTING BACK B/C OF THE SWR >>> >>> 6. Assuming this has suddenly occurred, and it was previously working >>> correctly, carefully examine the settings of the Tune and Load controls. >>> Have they changed significantly from their settings when it was working >>> properly? >> >> MOOT QUESTION NOW >>> >>> When we know the answers to these questions, maybe something will give us >>> further clues. >>> >>> 73 >>> Rick >>> >>> -----Original Message----- >>> From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com] >>> On Behalf Of Kris Merschrod >>> Sent: Thursday, May 27, 2010 12:55 PM >>> To: Discussion of Ten-Tec Equipment >>> Subject: [TenTec] Ten-Tec 411 Centaur Amp Problem >>> >>> Wow, now that Joe (K0BX) has managed to slid in edgewise by taking >>> advantage of the great TT QSK while the discussion group was in CW >>> mode!!!! >>> >>> Here is the issue that I have. On 40 meters, into a resonant 40 meter >>> loop, >>> >>> the Centaur will only put out 375 atts. >>> On 80 meters and 20 meters it puts out the appropriate power (500+ Watts) >>> while using a tuner into an 80 meter dipole. On 40 Meters, through the >>> tuner, into an 80 meter diople it will only put out the same 375 watts. >>> >>> Where can the problem be? >>> >>> Kris KM2KM >>> Merschrod >>> 123 Warren Road >>> Ithaca, NY 14850 >>> www.merschrod.net/KA2OIG.htm >>> >>> _______________________________________________ >>> TenTec mailing list >>> TenTec@contesting.com >>> http://lists.contesting.com/mailman/listinfo/tentec >>> >>> _______________________________________________ >>> TenTec mailing list >>> TenTec@contesting.com >>> http://lists.contesting.com/mailman/listinfo/tentec >>> >> >> _______________________________________________ >> TenTec mailing list >> TenTec@contesting.com >> http://lists.contesting.com/mailman/listinfo/tentec >> > _______________________________________________ > TenTec mailing list > TenTec@contesting.com > http://lists.contesting.com/mailman/listinfo/tentec > _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec ```
 Current Thread Re: [TenTec] wither CW, (continued) Re: [TenTec] wither CW, Steve Berg Re: [TenTec] wither CW, N4PY2 Re: [TenTec] wither CW, Richards Re: [TenTec] wither CW, Gary Bold Re: [TenTec] wither CW, Richards [TenTec] Ten-Tec 422 Amp Problem, k0bx@arrl.net [TenTec] Ten-Tec 411 Centaur Amp Problem, Kris Merschrod Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Rick - NJ0IP / DJ0IP Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Kris Merschrod Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Dr. Gerald N. Johnson Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, CSM\(r\) Gary Huber <= Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Kris Merschrod Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Dr. Gerald N. Johnson Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Rick - NJ0IP / DJ0IP Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Rick - NJ0IP / DJ0IP Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Dr. Gerald N. Johnson Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, k0bx@arrl.net Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Kris Merschrod Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Richards Re: [TenTec] Ten-Tec 411 Centaur Amp Problem, Kris Merschrod Re: [TenTec] Ten-Tec 422 Amp Problem, Jim Brown K9YC