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21. Re: [Amps] Dual tetrode in grounded grid (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 12 Feb 2009 09:38:06 -0800 (PST); The only problem with using RG58/U is that you are going to have a pretty large coil. Also, resistors are definitely a lot cheaper even though I buy RG58/U in 500 foot spools for making the interconn; /archives//html/Amps/2009-02/msg00368.html (9,209 bytes)
22. Re: [Amps] Dual tetrode in grounded grid (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 12 Feb 2009 12:56:21 -0800 (PST); I am still going to need at least 6 dB attenuation and that would mean at least 75 feet of RG58/U at a cost of just over 30 cents a foot. Compare that with resistors which would total well under a do; /archives//html/Amps/2009-02/msg00378.html (9,089 bytes)
23. Re: [Amps] Dual tetrode in grounded grid (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 12 Feb 2009 15:15:35 -0800 (PST); I am VERY familiar with the characteristics of RG58/U. In fact, I used to buy it by the 1000 foot spools and use it for "leaky line" antennas for 960 MHz 47 CFR Part 15 installations in places like w; /archives//html/Amps/2009-02/msg00386.html (10,871 bytes)
24. Re: [Amps] 1625 (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 12 Feb 2009 15:19:11 -0800 (PST); The "olde tymers" used to tell me of running like 1000 volts on the plate of a 6L6. According to them, you had to send code pretty fast because a short "dash" turned the plate red and a long "dash" m; /archives//html/Amps/2009-02/msg00387.html (8,783 bytes)
25. Re: [Amps] Dual tetrode in grounded grid (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 12 Feb 2009 20:06:43 -0800 (PST); Agreed! But your comment about RG58/U brought it on. Anyway, enough on the subject. Glen, K9STH Website: http://k9sth.com _______________________________________________ Amps mailing list Amps@contes; /archives//html/Amps/2009-02/msg00398.html (12,969 bytes)
26. Re: [Amps] equipment faceplates-stencil etc (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 19 Feb 2009 09:03:50 -0800 (PST); I have made overlays using an inkjet printer and transparencies that are used for overhead projectors. You can get blank overhead transparencies at most office supply centers although I have found th; /archives//html/Amps/2009-02/msg00563.html (9,083 bytes)
27. Re: [Amps] QRO HF-2500DX on 10.1 MHz (Proper title!) (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Sun, 1 Mar 2009 08:18:15 -0800 (PST); Agreed on the use of a linear here in the United States. Sometimes I do use my Tempo 2001 linear to get the power from my Collins 32S-3 up to the 200 watt level. Of course the amplifier can do a "lot; /archives//html/Amps/2009-03/msg00013.html (8,006 bytes)
28. [Amps] 810 tube (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Wed, 4 Mar 2009 09:38:30 -0800 (PST); I have an 810 power tube that is basically brand new. However, the only thing that I can verify to be good is the filament. Tube has a ceramic base. Basically, I have no use for this tube and am open; /archives//html/Amps/2009-03/msg00115.html (6,649 bytes)
29. Re: [Amps] Microwave Transformers? (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Tue, 10 Mar 2009 12:00:39 -0700 (PDT); Because most of them have one side of the secondary connected to ground. It is possible to use 2 transformers and phase them accordingly. That way the "center tap" is grounded. Glen, K9STH Website: h; /archives//html/Amps/2009-03/msg00293.html (7,894 bytes)
30. Re: [Amps] SB200 on 6m & my take (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Fri, 13 Mar 2009 10:55:12 -0700 (PDT); The "Taylors" that R.F. Parts sells are Chinese. R. F. Parts acquired the Taylor trademark a while back. However, the 572B tubes that Taylor brands with the Taylor trademark are supposedly "special"; /archives//html/Amps/2009-03/msg00390.html (8,231 bytes)
31. Re: [Amps] High SWR, (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 23 Apr 2009 08:23:53 -0700 (PDT); Some people just cannot seem to grasp the phantom "reflected power" concept. Basically, "reflected power" is not real. To obtain the measurement of the true power being delivered to the load you have; /archives//html/Amps/2009-04/msg00258.html (9,787 bytes)
32. Re: [Amps] High SWR, (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 23 Apr 2009 13:37:22 -0700 (PDT); Power itself is not reflected. What is reflected is a portion of the wave form and, as such, that can be measured in the same manner as power. But, in the true sense of the word power is either dissi; /archives//html/Amps/2009-04/msg00290.html (11,531 bytes)
33. Re: [Amps] High SWR (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 23 Apr 2009 13:51:23 -0700 (PDT); Before the advent of transmitters with fixed impedance output circuits the vast majority of amateur radio operators didn't worry about SWR. Having an SWR bridge was not high on the list of items whic; /archives//html/Amps/2009-04/msg00291.html (11,984 bytes)
34. Re: [Amps] motor run cap (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Fri, 8 May 2009 08:13:26 -0700 (PDT); Remember, the tolerance for most motor starting capacitors is at least +/- 50%. Therefore, using a 4.7 mfd capacitor is well within those tolerances. Glen, K9STH Website: http://k9sth.com Thanks to e; /archives//html/Amps/2009-05/msg00044.html (7,989 bytes)
35. [Amps] Filament transformer needed (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Sat, 6 Jun 2009 10:02:34 -0700 (PDT); I am trying again to see if anyone has a filament transformer with 5.0 volts center tapped and at least 15 amps capability. I have tried various surplus outlets (including the one in Marietta, Georgi; /archives//html/Amps/2009-06/msg00020.html (6,989 bytes)
36. Re: [Amps] 8874? (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Wed, 1 Jul 2009 16:16:59 -0700 (PDT); Are you sure the solid-state "HW-101" wasn't the HW-104? That rig was the "el cheapo" version of the SB-104. The "matching" separate VFO for the SB-104 and HW-104 was the SB-644. The SB-230 definitel; /archives//html/Amps/2009-07/msg00029.html (8,778 bytes)
37. Re: [Amps] Roger's complete correction on tubes (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 2 Jul 2009 12:21:36 -0700 (PDT); Hunter made 3 different linears called "Bandit". The Hunter Bandit 2000A came out in 1962; the Hunter Bandit 2000B came out in 1965; and the Hunter Bandit 2000C came out in 1968. Hunter also made the; /archives//html/Amps/2009-07/msg00060.html (9,136 bytes)
38. Re: [Amps] SB-220 had two (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Thu, 2 Jul 2009 11:29:22 -0700 (PDT); No Way! The Heath SB-220 and SB-221 had 2 each 3-500Z tubes. The SB-230 had a single 8873. Glen, K9STH Website: http://k9sth.com Heath SB-220/230 used TWO 3-500z. ____________________________________; /archives//html/Amps/2009-07/msg00078.html (6,660 bytes)
39. Re: [Amps] Dummy Load "Oil" (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Wed, 29 Jul 2009 12:18:23 -0700 (PDT); Most electric company service centers will just give you a gallon of transformer oil. They stock it by the 55 gallon drums and the paperwork to sell you a gallon costs considerably more than what a g; /archives//html/Amps/2009-07/msg00363.html (8,233 bytes)
40. Re: [Amps] HT-33A (score: 1): Author: Glen Zook <gzook@yahoo.com>; Date: Sat, 25 Jul 2009 08:11:41 -0700 (PDT); One thing is with the circuitry of the HT-33A. Some of the later units actually had HT-33B circuitry. The HT-33A that I obtained a few months ago is definitely marked as an HT-33A. However, it came f; /archives//html/Amps/2009-07/msg00403.html (8,064 bytes)

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