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References: [ +from:g8gsq@qsl.net: 314 ]

Total 314 documents matching your query.

221. [AMPS] construction of parasitics (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 25 Jul 2001 14:05:46 +0100; snip Why is this ratio optimum? I would have expected to get greater damping if you put a higher percentage of the current through the resistor. Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amp; /archives//html/Amps/2001-07/msg00306.html (8,216 bytes)
222. [AMPS] Data on triodes? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 8 Jun 2001 17:52:56 +0100; I've been offered a couple of glass triodes, some shape and size as 3-500s etc. The anode has several annular rings rather than the vertical grooves. These are EEV manufacture, marked C.1112, date co; /archives//html/Amps/2001-06/msg00081.html (6,967 bytes)
223. [AMPS] 4cx250* amp building plans (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sun, 10 Jun 2001 08:19:47 +0100; --Original Message-- From: Phil <PhilHSS@Breathemail.net> To: Partain, Chuck <Chuck_Partain@Maxtor.com>; Amps (E-mail) <amps@contesting.com> To: <amps@contesting.com> Date: 09 June 2001 12:23 Subject; /archives//html/Amps/2001-06/msg00088.html (8,859 bytes)
224. [AMPS] Filament ratings (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Jun 2001 19:57:48 +0100; Is there a way of guessing at the correct settings from V/I measurements? I have some tubes where I can't find any data and I'd like to try and figure out what they might do. The first step has to be; /archives//html/Amps/2001-06/msg00095.html (6,923 bytes)
225. [AMPS] Filament ratings (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Tue, 12 Jun 2001 08:34:29 +0100; Thanks for the offer of help. One for starters is the STC 4011B (see it at www.qsl.net/g8gsq ) which looks quite like 211/vt4. Another old domestic type is a Philips 323, can't see inside to figure o; /archives//html/Amps/2001-06/msg00101.html (8,952 bytes)
226. [AMPS] Q and parasitics. (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Tue, 19 Jun 2001 07:49:30 +0100; 6146s, gate satisfactory. I suspect one of the problems with ferrite beads is the unknown and/or not understood characteristics of so many in circulation, especially when one from the junkbox is used; /archives//html/Amps/2001-06/msg00150.html (7,687 bytes)
227. [AMPS] Review of Antenna Tuner from Dayton (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Tue, 19 Jun 2001 14:51:49 +0100; things I wonder what an extra 1/8 wave of cable might have done? What was the antenna impedance? Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrativ; /archives//html/Amps/2001-06/msg00153.html (10,836 bytes)
228. [AMPS] filament cutback (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Thu, 21 Jun 2001 15:42:18 +0100; Presumably, if there's enough emission for a given carrier level, there's enough for the same pep. Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrat; /archives//html/Amps/2001-06/msg00233.html (7,466 bytes)
229. [AMPS] vacuum caps (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 22 Jun 2001 15:47:33 +0100; I have a couple of Western Electric ones (fixed vlaue), type 8047 - 50pF 7.5kV 10A and 50pF 5kV 5A. The 7.5kV one goes to 15kV for 1uA leakage, the other must be gassy and arcs at 1.5-2kV. Can it be; /archives//html/Amps/2001-06/msg00259.html (6,881 bytes)
230. [AMPS] vacuum caps (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sat, 23 Jun 2001 10:34:29 +0100; I guessed so - I wondered if there might be mileage in putting it in a vacuum chamber for a while until the hipot came right, then quickly sealing the ends with varnish or somesuch. Steve -- FAQ on W; /archives//html/Amps/2001-06/msg00268.html (7,557 bytes)
231. [AMPS] RMS Power (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Thu, 28 Jun 2001 08:27:32 +0100; subject RMS power exisits mathematically, but it's a meaningless concept in practice. RMS is (square) root (of the) mean (of the) squares. In electrical terms, it's the value of a steady state curren; /archives//html/Amps/2001-06/msg00303.html (9,235 bytes)
232. [AMPS] RMS Power (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Thu, 28 Jun 2001 18:34:18 +0100; That's the correct version then Confusion here - I think it was a reference to 'average' value compared with rms value for a sinewave *voltage*. I put 'average' in quotes because a sinewave has an av; /archives//html/Amps/2001-06/msg00316.html (9,289 bytes)
233. [AMPS] ALC (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 2 May 2001 20:34:07 +0100; Dammit - I wish I could find the plots I did of the 'risetime' out of my IC706IIG to publish. I'll have to take a fresh set. From memory, 150% for a few ms, then zero for 200ishms then about 20ms ris; /archives//html/Amps/2001-05/msg00032.html (7,170 bytes)
234. [AMPS] Self oscillation with homebrew 3-1000Z ???? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 7 May 2001 08:57:08 +0100; Jim, I reckon there are two important steps in sorting a problem of this sort. 1. Get some sort of spectrum analyser, or even a scanner, and find out what frequency the oscillation goes off at. 2. Tr; /archives//html/Amps/2001-05/msg00099.html (9,047 bytes)
235. [AMPS] Self oscillation with homebrew 3-1000Z ???? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 7 May 2001 18:07:15 +0100; Agreed - we all get used to our own toolkit. A wavemeter might not find a vhf oscillation at the output socket of a hf amp, so you might need to have the lid off and ht on. Lid on and ht on is safer.; /archives//html/Amps/2001-05/msg00104.html (10,408 bytes)
236. [AMPS] Self oscillation with homebrew 3-1000Z ???? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 9 May 2001 08:00:12 +0100; --Original Message-- From: Jon Ogden <na9d@speakeasy.net> To: W8JI@contesting.com <W8JI@contesting.com>; amps@contesting.com <amps@contesting.com>; Steven Moore <wd0ct@networksplus.net> To: <amps@con; /archives//html/Amps/2001-05/msg00130.html (9,036 bytes)
237. [AMPS] Air Variable Caps (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 9 May 2001 16:36:31 +0100; Tekelec or Johanson? Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com; /archives//html/Amps/2001-05/msg00140.html (6,830 bytes)
238. [AMPS] UPDATE ON 3-1000Z OSCILLATION (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 11 May 2001 10:39:29 +0100; do dealing. all the Well, it is based on Jim's personal experiences... Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2001-05/msg00176.html (9,206 bytes)
239. Fw: [AMPS] 2 x 8877 on 6 meters? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 11 May 2001 17:15:10 +0100; Apologies if this turns up twice, but the first send hasn't appeared and something subsequent has. Steve To: <amps@contesting.com> on -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: am; /archives//html/Amps/2001-05/msg00180.html (8,550 bytes)
240. [AMPS] 2 x 8877 on 6 meters? (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 11 May 2001 08:01:42 +0100; You need to be careful with manufacturer's capacitance figures, especially at higher frequencies. Usually Ca is measured using a shielded isolated fixture, where strays to the outside world are exclu; /archives//html/Amps/2001-05/msg00201.html (8,178 bytes)

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