I have a Omni VI upgraded to version 2 or 3 and a Titan 425 amplifier. They work great, however there seems to be some "drift" in the amplifier tuning, or it may be changes in the Omni VI power outpu
Ken, I don't use my Omni 6 and Titan on 160 (no ant) but on contesting.com, on the 'Top Band' reflector I have read several guys using the Titan on 160 and they all complain about the tuning 'drift'
The major cause of the Titan I power output and tuning drift problem is due to dielectric heating of the plate circuit DC blocking capacitors. Ten Tec uses two 0.001 uF/6 kV disc ceramic capacitors w
Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer)
Date: Sun Mar 16 20:33:12 2003
The plate blocking capacitors should be the least effect at 160 meters because the tube plate C is far less than the tuning C. At 10 meters the tube plate C is a large fraction of the circuit tuning
Dave - I blew a cap on 40M this morning so I've got to open up the Titan again...might as well upgrade some of the other caps in there as well. Please e-mail me the info you offered...thanks! Tom K2T
Without a doubt tuning drift is caused by the fixed caps in the loading circuit and not by the .001 blocking caps. Was this a bad brand of caps? Bad design (too low current / voltage ratings)? Aging
I've gone to Surplus Sales' website. I don't see physical dimensions for the various mica/ceramic caps posted there. 1) Are there archives of old Ten-Tec newsgroup postings that I can search through
Ok..I put my eyeglasses on and SEE that there are dimensions given for the caps. <start of rant> I HATE AGING GRACEFULLY...JUST TAKE ME OUT NOW! <end of rant> I'd still appreciate any input on which
To those concerned - I followed Dave's modification for my Titan, (a late model) and found it indeed cleared up the tuning drift. I recommend this to be the answer for those of you who have the probl
GM! Late model Titan's like Don's may well have left the factory with a 15 kV (vs. 5 kV) doorknob cap for C15. In the earlier Titans, there was major tuning drift on 160 meters. (the band Ken, the or
I've gone to Surplus Sales' website. I don't see physical dimensions for the various mica/ceramic caps posted there. 1) Are there archives of old Ten-Tec newsgroup postings that I can search through
Author: RMcGraw@Blomand.Net (Robert & Linda McGraw K4TAX)
Date: Mon Mar 17 21:16:13 2003
As a general rule I find that disk ceramic capacitors, regardless of voltage rating, aren't the best choices in high circulating RF current conditions. Component tolerance is typically 20% and often