I seem to be having a tuning issue with a recently purchased used Centurion. Specifically, there doesn't seem to be sufficient capacitance in the LOADING for 40, 80, 160. When tuning I run the LOAD c
Hi Bruce, you mentioned "light operating" and that makes me wonder if you are running the amplifier at less than rated drive, plate current and power input/output? If so, the plate load impedance is
When tuning I run the LOAD cap up to 10 (MAX) I am not completely familiar with the Centurian, but most amplifiers number their load controls from 1 to 10 and from left to right. That being the case,
I would add a 200 mFd at 600 Volts across the loading capacitor and see if: 1. it cures the problem on 40, 80 and 160. 2. you can still properly adjust loading control in your highest channel. If so
Id start with 200pf !! and at least a 1000V DM-19 size silver mica or 5000V ceramic RF cap. But first since the amp was designed to work as built: There is also the possibility that your tank circuit
How about calling Ten Tec to see if they have a fix or a mod or information about this Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense
That's a good move. I also strongly suggest proceeding on the assumption that the amp works as designed, and that something is BROKEN. In addition to Carl's suggestion, I'd also look for a problem wi
<<< I am not completely familiar with the Centurian, but most amplifiers number their load controls from 1 to 10 and from left to right. That being the case, the maximum load value (in pf) should
Hi Lee, My first resuorce was to Ten Tec. They stated exactly what I thought they would. The amps have been in production for years and they work fine. Must be a problem with mine. If I want them to
Hi Lee, My first resuorce was to Ten Tec. They stated exactly what I thought they would. The amps have been in production for years and they work fine. Must be a problem with mine. If I want them to
Confusing indeed. I noticed the same thing with the Emtron DX-2SP at my club. Turning the knob to the right increases capacitance. I guess it doesn't really matter a great deal. It is just unconventi
I guess it doesn't really matter a great deal. It is just unconventional. 73, Alek It matters if the dial is on wrong and you go by the manual for initial settings. NO? ______________________________
This seems to be the way Ten Tec power amps are set up. My Titans, vintage 1980, are also set up that way. So take the cover off and look at it! That's what I did. End of confusion. :) It's also quit
When I first read this I thought " Yeah that is pretty important, I sure hope everyone talking about amplifiers realizes that." Then I thought about it a bit more and realized it is only true if you
Yeah, I wrote that badly. What I meant was the impedance of the line as it reflects the antenna at the other end. :) 73, Jim K9YC _______________________________________________ Amps mailing list Amp
Actually Ten Tec has the better idea for those operators not used to the other way. With 0 being minimum C and 10 the max you dont have inverted logic when trying to figure out which way to turn the
I suppose the logic is more in line with reality. Truth is increased loading means less C, so it stands to reason that higher numbers stand for increased loading. Makes sense to me. However since inc
This seems to be the way Ten Tec power amps are set up. My Titans, vintage 1980, are also set up that way. So take the cover off and look at it! That's what I did. End of confusion. :) It's also quit
Unless I missed something, the Centurion doesn't have a safety to ground choke (which sort of surprises me). I don't know if that is unusual among manufactured amps or not. Padding caps on the tune c