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101. [Amps] Re: [Amps] Re: [Amps] Re: [Amps] Re: [Amps] BirdR 43 Manual (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 5 Apr 2002 08:07:19 +0100; --Original Message-- From: Peter Chadwick <Peter.Chadwick@zarlink.com> To: Ian White, G3SEK <G3SEK@ifwtech.co.uk>; amps@contesting.com <amps@contesting.com>; 'G8GSQ' <g8gsq@qsl.net> To: <amps@contest; /archives//html/Amps/2002-04/msg00169.html (7,853 bytes)
102. [Amps] VHF AMPLI WITH BLV25 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 8 Apr 2002 12:38:10 +0000; These transistors have internal matching to tune them for operation at 88-108MHz. The matching acts as a low pass filter, so it is likely to make operation at higher frequencies difficult. Steve; /archives//html/Amps/2002-04/msg00233.html (6,693 bytes)
103. [Amps] gs35b and gu78b stray C to chassis (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Tue, 9 Apr 2002 14:56:01 +0000; Just tried a GS35b sitting on a plate of metal with a suitable hole in it. I propped a couple of pieces vertically a couple of inches away to look like box walls. Using a network analyser at 10MHz, i; /archives//html/Amps/2002-04/msg00264.html (7,051 bytes)
104. [Amps] TS-440S Update (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 15 Apr 2002 10:24:17 +0000; I reckon ALC meters are often too sluggish. TS830, for example: often commented that it's cleaner with the processor on - actually, it's not, but without clipping the ALC meter doesn't register short; /archives//html/Amps/2002-04/msg00353.html (8,145 bytes)
105. [Amps] RE: Solid State HF amps and kits (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sat, 20 Apr 2002 07:47:47 +0100; --Original Message-- From: PAUL HEWITT <wd7s@att.net> To: Steve Katz <stevek@jmr.com>; 'WYsixK' <wy6k@yahoo.com>; 'Jim Strohm' <jstrohm@texas.net>; amps@contesting.com <amps@contesting.com> To: <amps; /archives//html/Amps/2002-04/msg00489.html (7,727 bytes)
106. [Amps] homebrew glitch resistors (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Thu, 25 Apr 2002 07:33:04 +0100; seems ? I would build one out of groved Delrin or ABS tubing and Ni-Cr resistance wire. 12' of #22 Ni-Cr should be about right. However, we buy glass-coated wire-wound resistors for glitch service an; /archives//html/Amps/2002-04/msg00546.html (8,096 bytes)
107. [Amps] Caps to go (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Thu, 25 Apr 2002 15:49:49 +0000; Anyone got a use for a couple of 250uF, 2500V capacitors? These are Sprague 282P family, 9 x 8 x 4". A search found a paper saying they are good for 3000A pulse once per second, and have Rs about .02; /archives//html/Amps/2002-04/msg00551.html (6,405 bytes)
108. [Amps] Blowers (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Tue, 5 Mar 2002 07:57:40 -0000; I recommend http://www.david-kirkby.co.uk/ham/fanpaper.pdf as bedtime reading. The mathematical treatment might appear offputting, but at the end it distills out to some basic equations which give a; /archives//html/Amps/2002-03/msg00071.html (7,436 bytes)
109. [Amps] al-1200 question (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 8 Mar 2002 17:13:39 -0000; because both). ratio. I can see this is the case where you have noise sources with a specific location, but I have a feeling it doesn't apply to general atmospheric noise that's uniformly distributed; /archives//html/Amps/2002-03/msg00169.html (9,702 bytes)
110. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 8 Mar 2002 17:47:19 -0000; --Original Message-- From: Richard <2@mail.vcnet.com> To: jljarvis <jljarvis@abs.adelphia.net>; AMPS <amps@contesting.com> To: <amps@contesting.com> Date: 08 March 2002 16:52 Subject: Re: [Amps] TenT; /archives//html/Amps/2002-03/msg00173.html (8,194 bytes)
111. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Fri, 8 Mar 2002 21:39:21 -0000; To: <amps@contesting.com> melt ? agreed ? The whatever on the anode is 8kV positive or negative. This is apparently sufficient to attract or repell the negatively charged gold melt-balls - and change; /archives//html/Amps/2002-03/msg00191.html (9,328 bytes)
112. [Amps] al-1200 question (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sat, 9 Mar 2002 07:24:42 -0000; --Original Message-- From: Vic Rosenthal <rakefet@rakefet.com> To: Steve Thompson <g8gsq@qsl.net> To: <amps@contesting.com> Date: 08 March 2002 23:36 Subject: Re: [Amps] al-1200 question snip both an; /archives//html/Amps/2002-03/msg00199.html (7,846 bytes)
113. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sat, 9 Mar 2002 07:35:45 -0000; on The grid is at 0v. The anode is at +8kV. The meltballs go to the anode. When the polarity is reversed, the meltballs seemingly head toward the base because current decreases. -- Attribution failur; /archives//html/Amps/2002-03/msg00200.html (9,072 bytes)
114. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Sun, 10 Mar 2002 08:02:16 -0000; To: <amps@contesting.com> ? RR ? With pos. 5kV on the anode, some of the meltballs apparently stick to the anode insulator where they form a leakage path. With neg 5kV on the anode, thanks to like ch; /archives//html/Amps/2002-03/msg00206.html (10,414 bytes)
115. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 09:25:48 -0000; To: <amps@contesting.com> ... ... ... ? My guess is that gold plating is used to reduce primary electron emission from the grid because the gold atom's outer electron shell is full. Thus, it does not; /archives//html/Amps/2002-03/msg00225.html (9,425 bytes)
116. [Amps] TenTec Hercules 444 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 09:38:04 -0000; Ten Tec tells me that the output transistors for this amp are no longer available. They tell me that there is a transistor with the same number, but it will not work because of design changes. Anybod; /archives//html/Amps/2002-03/msg00226.html (6,757 bytes)
117. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 09:52:59 -0000; --Original Message-- From: Vic Rosenthal <rakefet@rakefet.com> To: W8JI@contesting.com <W8JI@contesting.com>; Amps reflector <amps@contesting.com> To: <amps@contesting.com> Date: 11 March 2002 09:23; /archives//html/Amps/2002-03/msg00227.html (11,288 bytes)
118. [Amps] TenTec Titan 425 (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 14:50:48 -0000; To: <amps@contesting.com> an electrostatically charged plastic rod. Maybe it's esoteric science? -- Maybe. I hate puzzles where I think I should be able to get to an answer. I keep distracting myself; /archives//html/Amps/2002-03/msg00231.html (8,701 bytes)
119. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 16:40:32 -0000; yagi great both Rx noise figure measured 1.5-1.8dB. you I wouldn't expect the average gain, integrated over a sphere to be higher than the 2x9. If anything, there's more potential sources of loss. ou; /archives//html/Amps/2002-03/msg00237.html (9,631 bytes)
120. [Amps] Antenna vs. amp (was: al-1200 question) (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Mon, 11 Mar 2002 17:41:37 -0000; a good antenna, 144 mhz with a single antenna system. Point you hear sun noise. explanation that fits antenna will certainly on all azimuth objects - will prove or This was my original thinking, it w; /archives//html/Amps/2002-03/msg00244.html (9,765 bytes)

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