I don't want to derail the thread about Bry's injured Centurion ... so I pose this question in a new thread: What can one do (beyond not running it to extremes and stressing it) to prevent problems f
First, disconnect the power. The voltage in this unit will KILL YOU! Once a year, remove the case and covers. Be sure the HV shorting strap/bar is in tact and does short the HV supply. This is when t
And also the key to having a cleaner signal. An amp that is over driven (using AGC to control the drive power) or that is not well tuned will generate lots of splatter, clicks, and other trash. I don
QST published an article called "Amplifier Care and Maintenance" in September of 2003 and it is available (as a PDF) to members on their web site. The article includes a flow chart for diagnosing pro
Well from experience, many fans have a "lifetime warranty". Now from my take, when the fan fails that is the end of its life and thus the end of the warranty. Same for "lifetime lubrication" in my th
I fully agree with Jim on the point that grid current is the most critical value to watch and adhere to in terms of extending tube life. For a pair of 3-500's the total grid current should NEVER exce
Keep a spare transformer handy. They are $565.00 plus CRATING charge AND shipping from Tentec. Not sure where they get them but guess there is some mark up. The insulation gets cracked, old, dry and
Ten Tec has some very good detailed instructions on tuning in their manuals. It is quite clear. I apologize for any duplicate messages today. My iPhone was misbehaving again ! Best regards - Bry Carl
You mean some folks actually read the manual? I thought they were just told the right way to do it by some other non knowing ham that had the info passed down from generation to generation. 73 Bob, K
Whoa... THANKS FOR ALL THE PROMPT ANSWERS !! 1) I will follow the recommended internal check. I will enlist the oversight of a local Elmer who retired from designing radio gear for Lear Jets, NASA, a
I've had two of the 422 Centurions. Always tuned them and operated them to "full tilt boogie" power out. The older one purchased new by me in 1991 still has the original tubes, original filter caps,
Good to know. I would like to see the Measures mod. Best regards - Bry Carling _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/ma
Just go to his website. For every amp I've updated or restored I've included his design and materials for parasitic suppressors. I also include a "glitch" resistor if not in the original design. http
Thanks Bob. Best regards - Bry Carling _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec