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Total 769 documents matching your query.

101. [AMPS] PS cabinet (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Tue, 19 Jun 2001 18:23:04 -0700
Hi Jim: You might want to look at copier stands. They are metal stands designed to hold a copier on top. They have a shelf to hold paper and toner cartridges and are well built. Because they are mass
/archives//html/Amps/2001-06/msg00172.html (7,310 bytes)

102. [AMPS] re: Board Decorum (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Fri, 22 Jun 2001 07:03:43 -0700
I listen to the local sports talk radio show sometimes on the way home. They started out just talking about sports. But, they were not growing. They did some research and found that even sports nuts
/archives//html/Amps/2001-06/msg00274.html (7,903 bytes)

103. [AMPS] ALC (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Wed, 2 May 2001 20:56:11 -0700
I am working on developing a faster acting ALC. Since the voltage developed by the amplifier, and the response by the transmitter is not fast enough in many combinations to shut down the transmitter,
/archives//html/Amps/2001-05/msg00040.html (8,364 bytes)

104. [AMPS] Self oscillation with homebrew 3-1000Z ???? (score: 1)
Author: k7fm@teleport.com (Colin Lamb)
Date: Mon, 7 May 2001 12:40:46 -0700
Rich said: "I would bypass the high-tech research, cut to the chase, and try a lower Rp suppressor". This was in response to a method of scientific approach to parasitic oscillation suppression. I su
/archives//html/Amps/2001-05/msg00106.html (9,660 bytes)

105. [AMPS] UPDATE ON 3-1000Z OSCILLATION (score: 1)
Author: k7fm@teleport.com (Colin Lamb)
Date: Thu, 10 May 2001 09:52:27 -0700
"A socket, a wiring and a layout that works for VHF (in a similar configuration, i.e. Gg and PI) is generally quite stable at lower frequencies as HF. Shielding of input and output, avoiding long wir
/archives//html/Amps/2001-05/msg00159.html (10,457 bytes)

106. [AMPS] Blowers (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Sun, 13 May 2001 17:16:29 -0700
"? You don't seem to get it, Jon. A high-speed centrifugal blower is required to overcome the back-pressure in the SK-510 air system socket. High-speed blowers are hard to live with, scarce and expen
/archives//html/Amps/2001-05/msg00240.html (7,555 bytes)

107. [AMPS] Blowers (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Mon, 14 May 2001 06:08:55 -0700
"? What is the pressure drop across the socket, Colin?" I did not measure it. I made the assumption Bill knew what he was talking about and my 4-1000 keeps cool. I suppose I should measure it and wil
/archives//html/Amps/2001-05/msg00251.html (7,089 bytes)

108. [AMPS] Blower Noise (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Mon, 14 May 2001 06:37:28 -0700
It has been suggested that a fan blowing across the tube will make less noise than a centrifugal fan, and therefore it is good to install such a fan. I thought blower noise was good. Have you ever he
/archives//html/Amps/2001-05/msg00255.html (8,345 bytes)

109. [AMPS] care to take a guess..? Alpha problem (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Tue, 29 May 2001 22:13:51 -0700
The fun begins. Fixing something that does not work is the joy of ham radio. Perhaps the worst feeling when making repairs is taking something apart, spending a lot of time confirming all the compone
/archives//html/Amps/2001-05/msg00508.html (10,462 bytes)

110. [AMPS] The Big Jolt! (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Thu, 5 Apr 2001 20:54:48 -0700
Some of the experiences related about high voltage make mine seem rather wimpy. While in high school I forgot to turn off my 1500 volt power supply. The muscle reflexes threw me about 12 across the r
/archives//html/Amps/2001-04/msg00125.html (7,077 bytes)

111. [AMPS] silver (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Sat, 14 Apr 2001 21:28:41 -0700
In this era of energy saving, we need to be creative. Why not route the output of the exhaust stack of that high power rig into the bathroom and use it for hair and hand drying. If we coordinate oper
/archives//html/Amps/2001-04/msg00338.html (8,350 bytes)

112. [AMPS] Zener screen supplies (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Tue, 17 Apr 2001 03:27:51 -0700
"We've been saying here for some time that IMD performance of transmitters is better than the amplifiers. Maybe that statement now needs a caveat.........." We can make sure that statement is accurat
/archives//html/Amps/2001-04/msg00383.html (9,031 bytes)

113. [AMPS] 3 phase transforers and single phase (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Thu, 19 Apr 2001 06:28:57 -0700
I have a 3 phase drop at my house - which consists of 2 power transformers. One of the transformers is the standard transformer. However, 3 phase is considered a commercial service so monthly rate is
/archives//html/Amps/2001-04/msg00438.html (8,241 bytes)

114. [AMPS] RF deck cooling (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Sat, 21 Apr 2001 05:29:44 -0700
You would be fighting the natural convection flow (heat likes to go up). It would be better to install the fan as a suction fan to suck the heat out. Air flows just the same - but with the aid of hea
/archives//html/Amps/2001-04/msg00452.html (7,318 bytes)

115. [AMPS] Buffer/Driver Stage for 4-1000 Amp (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Thu, 26 Apr 2001 19:24:49 -0700
Hi Todd: Any time you add another stage, you need to be concerned about deterioration of the signal by a few more db. The 4-1000 is pretty clean. The 811A can be pretty good. But once you put the add
/archives//html/Amps/2001-04/msg00540.html (8,861 bytes)

116. [AMPS] SB-220 Amplifiers and Garage Sales!! (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Wed, 21 Mar 2001 19:22:28 -0800
Hi Bill: Yes, you certainly did the right thing! I did the wrong thing about 15 years ago and still wake up at night thinking about it. My friend's ham father died and asked me to help sort things ou
/archives//html/Amps/2001-03/msg00185.html (9,063 bytes)

117. [AMPS] Swan Mark 2 Amp Question? (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Thu, 29 Mar 2001 19:47:31 -0800
Hi Ed: The Swan Mk II came without a tuned input. Most amplifier are difficult to retrofitl a tuned input - but the Mk II is one of the few that is rather easy. The bandswitch shaft is a standard sha
/archives//html/Amps/2001-03/msg00295.html (7,756 bytes)

118. [AMPS] Amps Power Conservation Measure (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Thu, 1 Feb 2001 08:09:36 -0800
With the power crunch in the West - especially in California, it is suggested that power usage be reduced by 10%. There are three approaches to saving energy with a large amplifier. The first is to r
/archives//html/Amps/2001-02/msg00020.html (7,830 bytes)

119. [AMPS] Amps Power Conservation Measure (score: 1)
Author: k7fm@teleport.com (Colin Lamb)
Date: Thu, 1 Feb 2001 10:02:48 -0800
Another method of saving energy is to convert to water cooled finals. During the big contest weekends, you could invite all the neighbors over for hot showers. For daily use, you could get up early,
/archives//html/Amps/2001-02/msg00027.html (7,580 bytes)

120. [AMPS] SB-220: Operate/Standby Switch (score: 1)
Author: k7fm@teleport.com (Lamb)
Date: Mon, 5 Feb 2001 06:18:38 -0800
"You know that. I know that. Probably everyone here knows that. Now convince the bean counters who generally have more say about what goes on in industry........oh, and the 'pointy haired bosses ' to
/archives//html/Amps/2001-02/msg00113.html (11,114 bytes)


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