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161. [AMPS] Logic v. Magic (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Fri, 8 Sep 2000 09:39:28 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0023_01C01978.AEBF0CA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable If an amplifier runs wi; /archives//html/Amps/2000-09/msg00299.html (13,837 bytes)
162. [AMPS] Logic v. Magic (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Fri, 8 Sep 2000 10:35:43 -0700; Hi Peter: Where might I obtain a sprig of rowan? I always find that my arsenal is more limited than it should be. You are right regarding replacement of original components. In particular, the carbon; /archives//html/Amps/2000-09/msg00305.html (8,908 bytes)
163. [AMPS] Shorted Pi-Network Turns (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sun, 10 Sep 2000 08:28:36 -0700; If you examine numerous commercial linear amplifier schematics, you will find that many use a progressive shorting pi-network switch. An equal number use a non-shorting pi-network switch. I begn rese; /archives//html/Amps/2000-09/msg00391.html (9,507 bytes)
164. [AMPS] Re: Alpha (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sun, 10 Sep 2000 10:07:28 -0700; The question is what will happen to the numerous Alpha amplifiers with the possible closing of Alpha Power. Car buffs are still driving Packards, Studebakers and Edsels and are able to maintain them.; /archives//html/Amps/2000-09/msg00397.html (7,793 bytes)
165. [AMPS] Shorted Pi-Network Turns (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sun, 10 Sep 2000 17:58:56 -0700; Tom's question was: Losses and circulating currents don't cause non-linearity or distortion. More than likely he was seeing normal measurement scatter. How much change did he measure, and what was th; /archives//html/Amps/2000-09/msg00424.html (11,232 bytes)
166. [AMPS] Parasitic Oscillation Repeatability (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sun, 10 Sep 2000 18:36:05 -0700; A parasitic oscillation must necessarily be repeatable. By definition, more than one complete cycle is required for an event to be an oscillation. And, if it has more than one cycle, it is repeatable; /archives//html/Amps/2000-09/msg00426.html (7,296 bytes)
167. [AMPS] High Voltage at Antenna Ends (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Mon, 11 Sep 2000 09:18:34 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0028_01C01BD1.42B44880 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable One way to prevent high; /archives//html/Amps/2000-09/msg00468.html (11,370 bytes)
168. [AMPS] EVALUATION OF HENRY 2K CLASSIC (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Mon, 11 Sep 2000 15:19:33 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0012_01C01C03.B01C53E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Over the weekend I had; /archives//html/Amps/2000-09/msg00494.html (11,451 bytes)
169. [AMPS] temperature variable, varistor or globar resistor source wanted (score: 1): Author: k7fm@teleport.com (Lamb); Date: Tue, 12 Sep 2000 06:50:39 -0700; Hi Skipp: Digi-Key sells "Inrush Current Limiters" in various values.They are wonderful devices for home builders. Extend the life of your lights, ac operated tube hearing aids or SW-3. No manufactur; /archives//html/Amps/2000-09/msg00530.html (7,926 bytes)
170. [AMPS] Audio Connectors (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Tue, 12 Sep 2000 08:49:15 -0700; How come many of the really strange audiophiles are from an island northwest of France? Granted, the great Williamson audio design came from there, and the wonderful audio output tubes - but it seems; /archives//html/Amps/2000-09/msg00543.html (8,487 bytes)
171. [AMPS] Shorted Pi-Networks Turns revisited (score: 1): Author: k7fm@teleport.com (Lamb); Date: Wed, 13 Sep 2000 08:42:04 -0700; Hi Sasha: The terminology of shorting v. non-shorting switch may not be correct. The "non-shorting" amplifiers do short the output circuit. The entire pi-nework coil is connected one side to the plat; /archives//html/Amps/2000-09/msg00606.html (11,574 bytes)
172. [AMPS] 833's - go for the gusto (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Tue, 19 Sep 2000 10:15:03 -0700; 833's should never be low level modulated. That would be beneath the dignity of such a fine tube. It would be more appropriate to run a pair in push-push (or pull-pull) with the grids in parallel and; /archives//html/Amps/2000-09/msg00882.html (9,109 bytes)
173. [AMPS] Some tube questions...conversion to H2O cooling (score: 1): Author: k7fm@teleport.com (Lamb); Date: Thu, 21 Sep 2000 02:44:35 -0700; As I understand it, too much air is indicated when the tubes blow out of the sockets. Rich, this is solved by mounting the tube and socket upside down so that the tube is blown into the socket. This; /archives//html/Amps/2000-09/msg00929.html (9,019 bytes)
174. [AMPS] Some tube questions...conversion to H2O cooling (score: 1): Author: k7fm@teleport.com (Lamb); Date: Thu, 21 Sep 2000 10:56:58 -0700; Too much air is when your blower sucks in the neighbor's cat who is just passing by on the sidewalk 100 feet away, causing you to have to stop contesting and clean it out of the fins and off the ceil; /archives//html/Amps/2000-09/msg00936.html (8,878 bytes)
175. [AMPS] Drake L7: another question (score: 1): Author: k7fm@teleport.com (Lamb); Date: Tue, 26 Sep 2000 12:49:49 -0700; "suppressing the original 0.82 ohm/2W 'fuse' resistor leads me to think I am reducing the circuit protection in case of a, let's say, shorted tube. Of course, it would also destroy the 10 ohm resisto; /archives//html/Amps/2000-09/msg01032.html (8,763 bytes)
176. [AMPS] Kaput 8877 #2 (score: 1): Author: k7fm@teleport.com (Lamb); Date: Tue, 26 Sep 2000 13:11:08 -0700; Rich, if the person conducting the autopsy already believes he knows the cause of death, he will simply use the autopsy to prove or confirm his belief. I cannot give much credence to an autopsy perfo; /archives//html/Amps/2000-09/msg01033.html (8,865 bytes)
177. SV: [AMPS] Linearizing Linears, feedback or feedforward (score: 1): Author: k7fm@teleport.com (Lamb); Date: Tue, 26 Sep 2000 15:20:09 -0700; My Harvey Wells Bandmaster uses an 807 final and operates on 1.8 to 148 mhz. (actually it is mcs., since it was built before the great conversion). The actual output of mine on 50 mcs. is 4 watts. On; /archives//html/Amps/2000-09/msg01057.html (10,128 bytes)
178. SV: [AMPS] Linearizing Linears, feedback or feedforward (score: 1): Author: k7fm@teleport.com (Lamb); Date: Wed, 27 Sep 2000 12:01:31 -0700; Th Harvey Wells Bandmaster, using the 807 ran about 30 watts input and had, I am guessing, about 1/2 watt output on 2 meters. No grid drive was indicated, all in accordance with the manual. Quite a m; /archives//html/Amps/2000-09/msg01096.html (9,689 bytes)
179. SV: [AMPS] Linearizing Linears, feedback or feedforward (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Wed, 27 Sep 2000 10:34:27 -0700; Hi Harry: If you will note in the Harvey-Wells manual, it actually covered from 160 meters through 2 meters, even though the bandswitch only went to 80 meters. The manual tells you how to operate on; /archives//html/Amps/2000-09/msg01111.html (9,301 bytes)
180. [AMPS] Suppress the Suppressors (score: 1): Author: k7fm@teleport.com (Lamb); Date: Sun, 6 Aug 2000 12:50:37 -0700; I do not wish to impede the quest for knowledge, nor the exercise of clear thinking - or even unclear thinking, but it seems we have had a never-ending debate about parasitic suppression. So, I wish; /archives//html/Amps/2000-08/msg00130.html (8,472 bytes)

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