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1. [TenTec] Titan 425 insight needed (score: 1): Author: Kelly Jones <kjones@sullivan1.com>; Date: Fri, 22 Aug 2003 09:01:20 -0600; Hello group, I recently picked up a Titan 425 and am looking for some insight. One of the first things that I noticed is that the input SWR is over 2:1 on both 20 and 40m. It is near flat on 15. I ha; /archives//html/TenTec/2003-08/msg00487.html (9,479 bytes)
2. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>; Date: Fri, 22 Aug 2003 11:39:02 -0500; There are bolts through the laminations on the transformer. Tighten them, they should reduce the hum. Some transformer cores are destined to hum because at high flux densities, the iron changes size; /archives//html/TenTec/2003-08/msg00490.html (7,927 bytes)
3. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "Tom Althoff" <althoff@verizon.net>; Date: Fri, 22 Aug 2003 15:53:38 -0400; Kelly - I've submitted a post which included my experiences with my Titan 425. It included a photo of one of the filter caps cut opened. It is too large for this newsgroup for automatic posting but t; /archives//html/TenTec/2003-08/msg00495.html (10,665 bytes)
4. Re: [TenTec] Titan 425 insight needed (score: 1): Author: DennisKT5D@aol.com; Date: Fri, 22 Aug 2003 20:43:00 EDT; What does your antenna VSWR through the amp (amp out of the circuit) look like? It has probably changed with the added lenght of coaxial cable from your exciter to the amp. I have a 425 and initially; /archives//html/TenTec/2003-08/msg00499.html (7,785 bytes)
5. Re: [TenTec] Titan 425 insight needed (score: 1): Author: Kelly Jones <kjones@sullivan1.com>; Date: Fri, 22 Aug 2003 20:15:10 -0600; Thanks for everyone's suggestions. Several suggested tightening the bolts on the transformer to reduce the hum. While I don't recall seeing any bolts when I had the PS open for cleaning/inspection an; /archives//html/TenTec/2003-08/msg00502.html (9,195 bytes)
6. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>; Date: Fri, 22 Aug 2003 21:17:35 -0500; The tape wound cores held with band straps do run a high flux density and do have magnetostriction. A little isolation by rubber insulators at the mounts may help quieten it. Its not faulty, its just; /archives//html/TenTec/2003-08/msg00503.html (7,724 bytes)
7. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "James Duffer" <dufferjames@hotmail.com>; Date: Sat, 23 Aug 2003 09:07:35 -0500; From: Kelly Jones <kjones@sullivan1.com> And thanks for the tips on the sort-of tuned input. I guess I should have done my homework a little better in this area. While it does appear to have a tuned; /archives//html/TenTec/2003-08/msg00510.html (9,583 bytes)
8. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>; Date: Sat, 23 Aug 2003 09:19:01 -0500; What the coax probably does is to supply the input C for to make an L network in the PA into a PI. The L network leaves more mismatch while the 29 pf per foot of the coax contributes to the match. Ad; /archives//html/TenTec/2003-08/msg00512.html (8,579 bytes)
9. Re: [TenTec] Titan 425 insight needed (score: 1): Author: "Tom Althoff" <althoff@verizon.net>; Date: Fri, 22 Aug 2003 14:21:18 -0400; Hi Kelly! I have owned a Titan 425 for the past year or so. I bought it used from W3NBC. I can give you some suggestions. Does your Titan have a red LED next to the meter labeled "Overdrive"... I bel; /archives//html/TenTec/2003-08/msg00518.html (14,890 bytes)

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