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261. Re: [Amps] X-TRA TUBE DAYS (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Fri, 12 Sep 2003 06:24:35 -0700; It does not really seem fair that when we were children, with marvelous eyes, all the printing was large. Text in books were large. Printing on instructions were large. But, as we progress into obliv; /archives//html/Amps/2003-09/msg00106.html (8,727 bytes)
262. Re: [BULK] - Re: [Amps] Getting Back In (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 11 Nov 2003 07:22:02 -0800; Steve mentioned the problem of getting power for the Alpha 77 in a hotel. "...not to mention requiring hotel rooms with 240V outlets...here in the States, I don't find any like that. WB2WIK/6" The an; /archives//html/Amps/2003-11/msg00143.html (8,217 bytes)
263. Re: [Amps] 4CX1600B (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Fri, 14 Nov 2003 06:57:35 -0800; ** The evidence may well be found in the autopsy. Comment: It is always disconcerting to do an autopsy on a subject that is alive and well. Colin K7FM -- Outgoing mail is certified Virus Free. Check; /archives//html/Amps/2003-11/msg00176.html (8,371 bytes)
264. Re: [Amps] Benefits of 3-phase power? (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Mon, 17 Nov 2003 07:36:43 -0800; I have 3 phase here in the country for a deep well. There is no 3 phase so the power company fakes it with two lines and two transformers. The monthly billing is on a separate meter and billed at a m; /archives//html/Amps/2003-11/msg00237.html (9,135 bytes)
265. [Amps] Home Built Amp (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Wed, 10 Dec 2003 18:56:23 -0800; There is an interesting amp for auction on eBay. I have never seen one constructed quite like this. Item No. 3064839871 The construction is unlike many of the fine amplifiers that have been highlight; /archives//html/Amps/2003-12/msg00157.html (6,974 bytes)
266. Re: [Amps] 220VOLT LINE...HAMS CAN BE DANGEROUS (score: 1): Author: "COLIN LAMB" <k7fm@teleport.com>; Date: Thu, 11 Dec 2003 12:09:09 -0800; I believe that in most states, to become an electrician one needs to pass a multiple choice test with a grade of 75%. What does that mean? It means that the examinee could have been 25% wrong. It mea; /archives//html/Amps/2003-12/msg00181.html (10,099 bytes)
267. [Amps] OPINIONS PLEASE (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Fri, 19 Dec 2003 17:52:23 -0800; I noted that most responses have been personal preferences rather than performance. I have found the same issues. I have a number of commercial amplifiers. I love the Alphas. However, I have a Henry; /archives//html/Amps/2003-12/msg00310.html (8,768 bytes)
268. [Amps] Hi Pot Tester (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Mon, 29 Dec 2003 09:53:27 -0800; eBay has something that may be useful for hams. It is made by Associated Research and was used as a hi pot tester for hospital equipment. I think some of the models may not do all of the testing now; /archives//html/Amps/2003-12/msg00453.html (7,816 bytes)
269. Re: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Wed, 31 Dec 2003 05:51:59 -0800; Without a stable, low impedance bias voltage, even assuming the amplifier is not designed to ever draw grid current, many of today's transceivers could not be used as drivers. The reason is that many; /archives//html/Amps/2003-12/msg00480.html (9,593 bytes)
270. [Amps] HiPot Tester For Sale (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 6 Jan 2004 17:40:25 -0800; Hello: eBay has a HiPot tester with a couple days to go. It works and has a variac in it, a 3 kv transformer, current limiting and an ac meter. It was designed for testing from 0-3,000 VAC. An extern; /archives//html/Amps/2004-01/msg00069.html (7,091 bytes)
271. [Amps] Hi Pot Tester Addendum (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 6 Jan 2004 19:47:45 -0800; I mentioned the Hi Pot tester on eBay. But, I neglected to note the number and have had some requests. Sorry. It is 2585458595. I may sell out of the ones I have remaining, but if you are interested,; /archives//html/Amps/2004-01/msg00072.html (7,129 bytes)
272. [Amps] Hi Pot Tester (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 6 Jan 2004 20:19:58 -0800; All of the remaining Hi Pot testers have been sold, but for the one remaining on eBay. 73, Colin K7FM -- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.co; /archives//html/Amps/2004-01/msg00073.html (6,429 bytes)
273. RE: [Amps] Transformer varnish removal (score: 1): Author: "COLIN LAMB" <k7fm@teleport.com>; Date: Fri, 16 Jan 2004 14:19:10 -0800; Before using MEK, I would read all the cautions very carefully. After doing so, I stopped using it. 73, Colin K7FM cans of Acetone, of Toluol or Toluene, and of isopropyl alcohol. furnace or gas-fire; /archives//html/Amps/2004-01/msg00162.html (9,601 bytes)
274. RE: [Amps] bad electrolytic capacitors (score: 1): Author: "COLIN LAMB" <k7fm@teleport.com>; Date: Fri, 16 Jan 2004 14:24:11 -0800; I had a problem I thought was from an electrolytic. But, I finally discovered that it was caused by the substance used to attach an electrolytic to the motherboard when the factory chose to correct a; /archives//html/Amps/2004-01/msg00163.html (12,242 bytes)
275. [Amps] HV SAFETY QUESTION (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Mon, 19 Jan 2004 06:25:21 -0800; One of the newer Alpha amplifiers has an interesting circuit. The rf choke bypasses a tap to increase the range without resonances. I expect that a few amateurs have also incorporated this feature, u; /archives//html/Amps/2004-01/msg00190.html (7,640 bytes)
276. Re: [Amps] HV SAFETY QUESTION (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 20 Jan 2004 06:11:13 -0800; Re: "However, it seems unlikely that enough Joules are stored to do any serious damage to a human -- even with the typical remaining charge on a 25uF or so filter C." Having been thrown across the ro; /archives//html/Amps/2004-01/msg00202.html (7,851 bytes)
277. Re: [Amps] HV SAFETY QUESTION (score: 1): Author: "COLIN LAMB" <k7fm@teleport.com>; Date: Tue, 20 Jan 2004 08:42:40 -0800; "Colin = Was the HV on when you were zapped, or were you tossed across the room by the stored charge?" Hi Rich: Either age or the shock has faded my memory as to whether the high voltage was on, but; /archives//html/Amps/2004-01/msg00203.html (9,566 bytes)
278. Re: [Amps] HV SAFETY QUESTION (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Thu, 22 Jan 2004 21:39:59 -0800; Hi Jim: It does not even take high voltage to put on a show. I used to have 1700 amp hour batteries for my wind generator (2 volt cells). One day someone came and laid a large 14" crescent wrench acr; /archives//html/Amps/2004-01/msg00237.html (9,190 bytes)
279. Re: [Amps] Tough valves? (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Mon, 26 Jan 2004 05:52:45 -0800; "Federal Express completely destroyed my GU-78b tetrode amplifier by dropping it on its face." And, they did not do my Collins 30S-1 any good by dropping it off their truck, on a corner. One side was; /archives//html/Amps/2004-01/msg00287.html (7,818 bytes)
280. [Amps] #18 gauge wire (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Tue, 27 Jan 2004 06:08:33 -0800; "I'm in need of 18 ga enamel coated wire for winding toroid inductors." Fortunately, I see that a source was found. However, I am slightly surprised and mildly disappointed that there was nary a sing; /archives//html/Amps/2004-01/msg00308.html (7,191 bytes)

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