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Total 95 documents matching your query.

21. [AMPS] SB-220 (score: 1): Author: AC5YV@hot.rr.com (Richard); Date: Sun, 12 Nov 2000 18:43:24 -0600; This is a multi-part message in MIME format. --=_NextPart_000_000F_01C04CD8.6FFBE540 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I need to replace the C; /archives//html/Amps/2000-11/msg00114.html (8,468 bytes)
22. [AMPS] SB-220 (score: 1): Author: 2@vc.net (measures); Date: Mon, 13 Nov 2000 02:15:05 -0800; The newer electrolytics have more C in the same case size. I would go with 470uF, 450v, 105-degrees C. The price break is at 10 units, so it pays to buy 16 caps and divide the order. It would help t; /archives//html/Amps/2000-11/msg00116.html (7,346 bytes)
23. [AMPS] SB-220 (score: 1): Author: da_kang@hotmail.com (Jeff Wolf); Date: Mon, 13 Nov 2000 15:14:31 GMT; Replacing the stock SB220 fils XFormer makes you have to use a step start circuit on the fils circuit. The original transformer uses a core that saturates at a little over the avg current draw of th; /archives//html/Amps/2000-11/msg00118.html (7,403 bytes)
24. [AMPS] SB-220 (score: 1): Author: kc5ajx@hotmail.com (Rick Bullon); Date: Mon, 13 Nov 2000 19:33:38 GMT; Hello Richard I read a post on another list that Harbach will be back and open for business Dec 1. 73 Rick KC5AJX _________________________________________________________________________ Get Your Pr; /archives//html/Amps/2000-11/msg00126.html (7,384 bytes)
25. [AMPS] SB-220 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Sun, 05 Oct 1997 11:56:33 EDT; On Mon, 29 Sep 1997 14:41:05 -0500 w5hvv@aeneas.net (Rod Fitz-Randolph) writes: Hi Rod..just got back from the NC trip....280 messages in the que! A 200 with good tubes and a stiff 240V line will out; /archives//html/Amps/1997-10/msg00021.html (8,846 bytes)
26. [AMPS] SB-220 (score: 1): Author: w5hvv@aeneas.net (Rod Fitz-Randolph); Date: Mon, 29 Sep 1997 14:41:05 -0500; I have an amateur friend that has an opportunity to purchase a "Pristine" SB-200 for $300, however, the present owner (who has only owned it for 3 months says that "those that claim 1,000 watts outpu; /archives//html/Amps/1997-09/msg00380.html (7,385 bytes)
27. [AMPS] SB-220 (score: 1): Author: morel.grunberg@telrad.co.il (Morel Grunberg); Date: Tue, 30 Sep 1997 08:50:39 +0200; Rod, My previous SB-200 was able to put a 760W PEP on 80m and 470W PEP on 10m on a dummy load, with new 572B tubes. For a longer life I suggest you to work at 4-500W CW, 300W RTTY and max. 600W PEP S; /archives//html/Amps/1997-09/msg00383.html (8,688 bytes)
28. [AMPS] SB-220 (score: 1): Author: vk3ew@rint.com.au (David VK3EW); Date: Wed, 18 Jun 1997 00:11:20 +1000; Hi All, I just got me a good second hand Heathkit SB220, wow.!!! and I HATE to turn it on, because it all turns on at once. The Filaments and the HT all together, those poor 3500z dont know whats hit; /archives//html/Amps/1997-06/msg00258.html (8,253 bytes)
29. [AMPS] SB-220 (score: 1): Author: morel.grunberg@telrad.co.il (Morel Grunberg); Date: Wed, 18 Jun 1997 17:22:39 +0300; David, Harbach Electronics is selling a lot of upgrade kits for SB-220 ( soft start, soft key, HV caps, fans......). Their e-mail: wa4dru@iu.net. They do have a WEB-site with all the stuff but I lost; /archives//html/Amps/1997-06/msg00259.html (9,919 bytes)
30. [AMPS] SB-220 (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 18 Jun 97 08:27:55 -0700; The SB-220 was designed to be turned on this way--provided that the HV is initially set to the low-tap. . The measured 3-500Z filament inrush current in a SB-220 is about 60% higher than the normal; /archives//html/Amps/1997-06/msg00262.html (8,606 bytes)
31. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Wed, 18 Jun 1997 11:52:09 -0500; say Why screw up a near-perfect circuit? The filament transformer is specially designed to be self-limiting on inrush current. The 3-500Z has instant-heat filaments. You are not hurting a thing when; /archives//html/Amps/1997-06/msg00265.html (8,550 bytes)
32. [AMPS] SB-220 (score: 1): Author: gblau@goodnet.com (Gary Blau); Date: Wed, 18 Jun 1997 11:07:35 -0700 (MST); David: All the comments about not needing a standby switch or step-start circuit for the 220 are technically correct, but I still find them handy, harmless and emotionally comforting! It's strictly; /archives//html/Amps/1997-06/msg00267.html (9,438 bytes)
33. [AMPS] SB-220 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 18 Jun 1997 23:18:57 +0000; To: <amps@contesting.com> Hi Phil, As I understand what you are saying, you seem to be indicating turning the filament off and on does not decrease tube life. If so, I disagree with that. A very com; /archives//html/Amps/1997-06/msg00273.html (9,249 bytes)
34. [AMPS] SB-220 (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 18 Jun 97 21:26:01 -0700; To: <amps@contesting.com> Eimac says that tube life will not be compromised as long as the filament inrush overcurrent remains equal to or less than the normal current. In a SB-220, this is assuredl; /archives//html/Amps/1997-06/msg00276.html (9,581 bytes)
35. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 19 Jun 1997 01:26:51 -0500; Everything that happens to a tube after it leaves the factory decreases its life....even sitting on a shelf. (especially sitting with the plate horizontal on a shelf) My experience is that the tube w; /archives//html/Amps/1997-06/msg00277.html (9,647 bytes)
36. [AMPS] SB-220 (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 19 Jun 97 07:04:16 -0700; (Phil Clements) Heath SB-220 owners add the switch because they know not, Phil. The good news is unjustifyable switch can be usefully rewired to control the relays for the SB-220 160m modification d; /archives//html/Amps/1997-06/msg00281.html (8,524 bytes)
37. [AMPS] SB-220 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 19 Jun 1997 10:59:59 +0000; To: <amps@contesting.com> I see we are indeed on the same wavelength. I didn't want anyone to think shutting the PA filaments off and on more than necessary was harmless, just because the inrush was; /archives//html/Amps/1997-06/msg00284.html (9,523 bytes)
38. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 19 Jun 1997 11:12:56 -0500; That guy chose the wrong tube for his operating style...had he chosen 3-500Z, 3-1000Z, oe 4-1000A, he would still most likely be on his original set. My comments were strictly limited to the SB-220.; /archives//html/Amps/1997-06/msg00286.html (8,686 bytes)
39. [AMPS] SB-220 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 19 Jun 1997 14:41:18 +0000; To: <amps@contesting.com> The 3CX1200 series uses the same filament structure as the 3-1000Z, 4-1000A, and similar tubes Are you saying the type of envelope affects the filament life? 73, Tom W8JI -; /archives//html/Amps/1997-06/msg00287.html (9,105 bytes)
40. [AMPS] SB-220 (score: 1): Author: biss@epg.nist.gov (Robert Biss); Date: Fri, 20 Jun 1997 09:01:35; I've been reading with great interest the SB-220 comments of the past couple of months and decided it is time for me to throw my 2 cents worth in.... I received my first 220 kit from the factory duri; /archives//html/Amps/1997-06/msg00306.html (9,319 bytes)

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