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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+Switches\s*$/: 63 ]

Total 63 documents matching your query.

41. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Thu, 12 Oct 2000 15:21:44 -0700; We are talking about overheating of closed bandswitch contacts from HF circulating current. From an owner "My brother and I also own an AL-1500. I follow the discussion about AL-1500 on the reflecto; /archives//html/Amps/2000-10/msg00252.html (9,475 bytes)
42. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Thu, 12 Oct 2000 15:21:41 -0700; This seems a bit unlikely with open contacts. There is no dirt visable in the photos of the burned bandswitches on my Web site. My SB-220's bandswitch used to intermittently spit during 40m operatio; /archives//html/Amps/2000-10/msg00253.html (9,254 bytes)
43. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Thu, 12 Oct 2000 15:21:45 -0700; see toasted bandswitch photos on my Web site. cheers - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administr; /archives//html/Amps/2000-10/msg00254.html (9,380 bytes)
44. [AMPS] Switches (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 12 Oct 2000 18:56:48 -0400; You can, with the correct tube and proper components, make a somewhat broadband input. The problem is the amp is a tetrode, and to do it right the rest of the circuitry costs a lot more than you sav; /archives//html/Amps/2000-10/msg00257.html (9,810 bytes)
45. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Thu, 12 Oct 2000 19:43:29 -0400; Of course a regulated screen voltage is required with the tetrode ... wouldn't do it any other way. However, would it still not be possible to use the same inductor between the tube and tuning cap on; /archives//html/Amps/2000-10/msg00260.html (9,406 bytes)
46. [AMPS] Switches (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 13 Oct 2000 04:51:24 -0400; I just went through that exercise with a 3CX1200Z7. I can leave the inductor in on 10 meters down, but things aren't quite the way I like them. Harmonic suppression is just at the edge of limits on; /archives//html/Amps/2000-10/msg00269.html (9,988 bytes)
47. [AMPS] Switches (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Fri, 13 Oct 2000 07:34:51 +0100; I wouldn't say that the screen supply in the 91/99B is well regulated (only zeners) so that amp doesn't necessarily show us the best IMD performance the 4CX800 is capable of. Likewise Eimac's recomme; /archives//html/Amps/2000-10/msg00273.html (10,443 bytes)
48. [AMPS] Switches (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 13 Oct 2000 08:30:19 -0400; Many amps have less regulation than that Ian! My point is that by the time you build a good system that rivals GG triodes for IMD, it costs more money that the triode amp. Unless you add negative fe; /archives//html/Amps/2000-10/msg00274.html (9,882 bytes)
49. SV: [AMPS] Switches (score: 1): Author: sm5ki@algonet.se (sm5ki); Date: Fri, 13 Oct 2000 15:58:32 +0200; What about some switch from a country from behind ex iron curtain? There should be plenty of overrated switches from ex military sources. de Hans SM5KI -- -- FAQ on WWW: http://www.contesting.com/FAQ; /archives//html/Amps/2000-10/msg00275.html (10,438 bytes)
50. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Fri, 13 Oct 2000 07:56:32 -0700; Reasons for using a tetrode in grid-driven configuration is: 1. a power gain of up to 200 vs. the triode's gain of c. 15. 2. The AB1 neutralized grid circuit (variable-L resonant with grid-C) is a N; /archives//html/Amps/2000-10/msg00276.html (10,796 bytes)
51. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Fri, 13 Oct 2000 12:27:11 -0400; Measures' "superior attitude" strikes again. For generations amateurs have been taught to tune g-g amplifiers for maximum output. Tune for plate/screen dip, load for specified screen current is fore; /archives//html/Amps/2000-10/msg00280.html (9,645 bytes)
52. [AMPS] Switches (score: 1): Author: Wt8r@aol.com (Wt8r@aol.com); Date: Fri, 13 Oct 2000 13:17:56 EDT; I guess I was unaware that the purpose of this reflector was to help Tom design amplifiers for Ameritron in order to make a living. Gee, I didn't realize that Tom needed help from hearing him talk ab; /archives//html/Amps/2000-10/msg00282.html (10,521 bytes)
53. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Fri, 13 Oct 2000 10:27:16 -0700; The screen is not dipped, Joe. It is peaked with the tank. Because I know that bandswitching a 9-bander does not represent good engineering practice. Furthermore, 28 - 29.7 MHz and 3.5 - 4.0 MHz nee; /archives//html/Amps/2000-10/msg00283.html (9,905 bytes)
54. [AMPS] Switches (score: 1): Author: 2@vc.net (measures); Date: Fri, 13 Oct 2000 10:57:02 -0700; AMPS is apparently the #1 amplifier discussion group. This is bound to attract those who require a really big blower. AMPS is the abode of the original self-recognized amplifier ''expert''. (QST, p7; /archives//html/Amps/2000-10/msg00285.html (10,342 bytes)
55. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Fri, 13 Oct 2000 14:03:10 -0400; It may not be good engineering practice in your book. However, it may be good commercial practice and that has to be a major concern when designing a product for a target audience. Input bandwidth c; /archives//html/Amps/2000-10/msg00286.html (9,228 bytes)
56. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Fri, 13 Oct 2000 14:03:13 -0400; This topic got started because Tom asked if anyone knew of a source of switches (in commercial quantities) at a better price, better availability than the JV-9000 or Radio Switch. He was particularl; /archives//html/Amps/2000-10/msg00287.html (8,837 bytes)
57. [AMPS] Switches (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 13 Oct 2000 15:53:21 -0400; The amplifier would not be type accepted with less than 50 watts driving power for 1500 watts out. That isn't true Rich. You have it exactly backwards. Eimac uses the commercial standard of dB below; /archives//html/Amps/2000-10/msg00289.html (11,096 bytes)
58. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Sat, 14 Oct 2000 09:13:29 -0400; Just because you haven't heard of it doesn't make it invalid. Although it is not used in amateur amplifiers since the single pi was "good enough" for tube exciters, more complex networks are often u; /archives//html/Amps/2000-10/msg00297.html (8,548 bytes)
59. [AMPS] Switches (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Sat, 14 Oct 2000 09:13:32 -0400; Was Alpha using RSC switches or something built in LZ in the 91B? At one time I seem to remember that part of the hype concerning the lower cost was due to off shore components that were "built unde; /archives//html/Amps/2000-10/msg00298.html (9,192 bytes)
60. [AMPS] Switches (score: 1): Author: hkman@hitter.net (Pat Poirier); Date: Thu, 12 Oct 2000 07:08:08 -0400; Dave, I thought the purpose of the reflector was to build amplifiers, I could care less who they are built for, i.e.. Ameritron, Alpha, Henry or the U.S. Government as long as we are all learning fro; /archives//html/Amps/2000-10/msg00303.html (12,332 bytes)

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