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1. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 23 Aug 2002 13:44:40 -0400; Hi All, I am new both to this list and to HF amps, so go easy on me please! I have acquired a 1960's vintage Swan Mark I amplifier. The amp was extensively modified prior to the mid-1970's including; /archives//html/Amps/2002-08/msg00227.html (10,590 bytes)
2. [Amps] Boat Anchor (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 23 Aug 2002 10:52:25 -0700; Joe, that sounds extremely modified! Glen, K9STH is a competent technician and I would trust his work, but if he bought the amp already modified and didn't personally use it, then who knows-? Did Gle; /archives//html/Amps/2002-08/msg00229.html (12,023 bytes)
3. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 23 Aug 2002 15:50:47 -0400; Pictures of the boat anchor are at http://www.rfengineers.com/n2uf/ there are two of each shot, one 'thumbnail' and one full-size.; /archives//html/Amps/2002-08/msg00231.html (7,701 bytes)
4. [Amps] Boat Anchor (score: 1): Author: W0YR@aol.com (W0YR@aol.com); Date: Fri, 23 Aug 2002 15:51:20 EDT; Joe, One thing I would do before firing up that Swan Amp is to go back to this reflector's archives to about May or June and read the 5,433 e-mails on the subject of using 4-400s in a Swan amp instea; /archives//html/Amps/2002-08/msg00232.html (7,720 bytes)
5. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 23 Aug 2002 15:57:54 -0400; Yes I will, since I just happen to have four 4-400's sitting on the = shelf. thanks Joe, One thing I would do before firing up that Swan Amp is to go back to = this reflector's archives to about May; /archives//html/Amps/2002-08/msg00233.html (8,144 bytes)
6. [Amps] Boat Anchor (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 23 Aug 2002 13:11:29 -0700; Hi Joe, It looks like an experimenter's paradise in there. I see connections and wires going nowhere -- assume these are rendered superfluous by new and added circuitry-? The high-Q parasitic suppres; /archives//html/Amps/2002-08/msg00234.html (24,651 bytes)
7. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 23 Aug 2002 16:21:59 -0400; The wire is in the process of being replaced--which is why it is dangling. Tuned input? OK, what if I left my AT-150 auto-antenna tuner between the HF rig and the input to the amp? Joe; /archives//html/Amps/2002-08/msg00235.html (8,772 bytes)
8. [Amps] Boat Anchor (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 23 Aug 2002 13:23:59 -0700; The autotuner in series with the amp input makes sense, and is what most people do if they haven't added a bandswitching tuned input circuit. Is there some cathode biasing in there somewhere? "If eve; /archives//html/Amps/2002-08/msg00236.html (9,700 bytes)
9. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 23 Aug 2002 16:45:59 -0400; I have been removing various 'unused' circuitry, there is more to go. Anyway, I am talking with all of you 'experts' in an attempt to avoid doing something stupid. For example, someone noted the 'dan; /archives//html/Amps/2002-08/msg00237.html (9,876 bytes)
10. [Amps] Boat Anchor (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 23 Aug 2002 13:47:27 -0700; Joe, why just the "center conductor" from a piece of RG8? Why not the coax, itself, using the shield also, and grounding the shield at both ends? On 80m, it doesn't make much difference, but on 10m,; /archives//html/Amps/2002-08/msg00238.html (11,111 bytes)
11. [Amps] Boat Anchor (score: 1): Author: joeham" <n2uf@joeham.net (joeham); Date: Mon, 26 Aug 2002 07:35:06 -0400; Guillermo, A very good question my friend. I have no idea. I don't even know if it is original or one of the many modifications that have been made to this amp. Perhaps one of the more knowledgeable; /archives//html/Amps/2002-08/msg00277.html (9,100 bytes)
12. [Amps] Boat Anchor (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Sat, 31 Aug 2002 17:24:44 -0400; Hi Guys, Remember me? I am still soliciting advice for rebuilding my Swan Mark I. The whole story can be found at : http://www.rfengineers.com/n2uf/Index.htm Your help is greatly appreciated. Joe N2U; /archives//html/Amps/2002-08/msg00339.html (7,807 bytes)
13. [Amps] Boat Anchor (score: 1): Author: Mike Sawyer" <kc4slk@csrlink.net (Mike Sawyer); Date: Sat, 31 Aug 2002 17:39:16 -0400; Joe, You may do well by contacting Joe Cro, (AKA Vortex Joe). He is pretty much up on the classic equipment and a damn nice fella. You can email him at: Yardleyite@aol.com Good luck, Mike(y) W3SLK --; /archives//html/Amps/2002-08/msg00340.html (8,404 bytes)

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