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References: [ +from:n2uf@joeham.net: 19 ]

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1. [Amps] Old Tubes (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Mon, 20 Jan 2003 14:28:00 -0500; Someone handed me a box of tubes (mostly new-in-box) and asked what they were worth. anyone have a clew? The box contains, in various quantity: 575A, 805, 807, 811, 845, 866 JoeD N2UF -- Outgoing mai; /archives//html/Amps/2003-01/msg00167.html (6,964 bytes)
2. [Amps] Any Good local sources of stuff in Hong Kong (score: 1): Author: n2uf@joeham.net (Joe (N2UF)); Date: Sat, 14 Dec 2002 23:53:34 -0500; I am in Hong Kong on business for the next couple of days. Does anyone know of any good local sources of Amp 'goodies' around here? I was told about some shops in Sham Shui Po and I am going to check; /archives//html/Amps/2002-12/msg00197.html (6,496 bytes)
3. [Amps] RMS-PEP & 2x8877 (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Thu, 7 Nov 2002 14:11:39 -0500; The RMS power of an RF signal is a mathamatical approximation of the equivilant amount of DC power. For example, if an RF signal were to dissapate in a resistive load then the RMS value of that signa; /archives//html/Amps/2002-11/msg00106.html (13,234 bytes)
4. [Amps] RMS Power (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Mon, 11 Nov 2002 09:54:21 -0500; DD-50 USS BALCH CLASS - AYLWIN (Classified As A New Class, They Were Repeat CASSIN's) As Built. Displacement 1,072 Tons, Dimensions, 305' 3" (oa) x 31' 2" x 10' 6" (Max) Armament 4 x 4"/50, 8 x 18" t; /archives//html/Amps/2002-11/msg00173.html (8,948 bytes)
5. [Amps] skin effect (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Fri, 4 Oct 2002 15:23:57 -0400; Steve, The advantage of regular stranded wire is flexability. Litz wire is a special type of stranded wire that is used to reduce skin effect. At 60Hz the skin effect is not an issue. Joe D at I've a; /archives//html/Amps/2002-10/msg00029.html (9,313 bytes)
6. [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)
7. [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)
8. [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)
9. [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)
10. [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)
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] bypass caps. (score: 1): Author: Joseph DiPietro" <n2uf@joeham.net (Joseph DiPietro); Date: Thu, 29 Aug 2002 08:43:07 -0400; Cost, size and dielectric strength. They are the least expensive devices that meet the parameter requirements (voltage, capacitance and size). Joe N2UF as; /archives//html/Amps/2002-08/msg00327.html (7,353 bytes)
13. [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)
14. Re: [Amps] testing 572 B tubes (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Sat, 04 Mar 2006 14:19:11 -0500; I have April 1978 HR right here. Testing Power Tubes is Page 60-63. Joe, N2UF -- ++++++++++++++++++++++++++ Joe DiPietro, N2UF http://www.joeham.net N2UF@joeham.net ++++++++++++++++++++++++++ _______; /archives//html/Amps/2006-03/msg00070.html (10,841 bytes)
15. Re: [Amps] testing 572 B tubes (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Sat, 04 Mar 2006 14:46:35 -0500; I am not sure what copyright issues are involved with scanning and distributing the article. Any lawyers out there who can tell me if this would be considered a 'fair use'? If so, I would be glad to; /archives//html/Amps/2006-03/msg00072.html (8,794 bytes)
16. Re: [Amps] Threads - was idiocy - perhaps it still is (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Wed, 15 Mar 2006 09:29:15 -0500; Most American beers look (and taste) like REAL beer after a 'body' is finished with it. Joe N2UF -- ++++++++++++++++++++++++++ Joe DiPietro, N2UF http://www.joeham.net N2UF@joeham.net +++++++++++++++; /archives//html/Amps/2006-03/msg00386.html (8,823 bytes)
17. Re: [Amps] Happy birthday to... (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Thu, 16 Mar 2006 10:44:31 -0500; Not to be argumentative Bill, but that is 'Internet' not 'internet'. <g> -- ++++++++++++++++++++++++++ Joe DiPietro, N2UF http://www.joeham.net N2UF@joeham.net ++++++++++++++++++++++++++ ____________; /archives//html/Amps/2006-03/msg00447.html (7,133 bytes)
18. Re: [Amps] emtron dx-1??? for a couple hundred bucks? (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Mon, 05 Jun 2006 13:27:16 -0400; Chuck, Well, the feedback is very telling. Every 'buyer' has zero feedback, half are no longer registered users, all 10 feedbacks were left inside a 23-minute window!! The payment method is 'other'.; /archives//html/Amps/2006-06/msg00129.html (8,227 bytes)
19. Re: [Amps] conversion scale from dbu to microvolts (score: 1): Author: "Joe DiPietro, N2UF" <n2uf@joeham.net>; Date: Sat, 29 Jul 2006 09:22:22 -0400; I wrote a program that (among other things) does the conversion between dB(uV/m), dB(mW), Watts and Volts/meter. A free version is available from my website. http://www.rfsoftware.com/rfpl/downloads.; /archives//html/Amps/2006-07/msg01286.html (8,414 bytes)

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