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101. [Amps] Muffin Fan on Swan Mark 1 (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 29 Jul 2002 07:00:05 -0700; /archives//html/Amps/2002-07/msg00521.html (7,967 bytes)
102. [Amps] ts-930 relay (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 29 Jul 2002 11:17:27 -0700; Pins 2&4 ought to work fine. I don't even recall the "jumper" in the TS930, it's been too many years ago for me. My more modern TS850S uses the same "REMOTE" 7-pin DIN connector, and to enable the am; /archives//html/Amps/2002-07/msg00528.html (8,142 bytes)
103. [Amps] Swan Mark 1 Meter Problem (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Tue, 4 Jun 2002 09:01:24 -0700; I think the Mark 1 used a single meter for all functions including plate current, grid current and plate voltage. If so, there's some fancy switching going on, there. Without the switch and the combi; /archives//html/Amps/2002-06/msg00019.html (8,543 bytes)
104. [Amps] relative value of a Henry 4K (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Thu, 6 Jun 2002 15:29:39 -0700; Have you seen and touched this amplifier? I'd at least lift the lid, unscrew the RF section cover (containing the tube and plate tank) and have a look in there to see if there's any evidence of what; /archives//html/Amps/2002-06/msg00045.html (9,163 bytes)
105. [Amps] RE: [Amps] 8877 Max Grid Current (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Tue, 18 Jun 2002 08:57:54 -0700; In my 8877 homebrew amps, I've always found that with high enough Ep and heavy loading, I could produce "legal limit" output with very little grid current, typ. 50mA. Lower Ep, more Ig. Looser loadin; /archives//html/Amps/2002-06/msg00141.html (10,508 bytes)
106. [Amps] 400 watts per 4-1000 drive???? (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Thu, 20 Jun 2002 15:33:51 -0700; 3800W each from 4-1000's makes them rather magical, kind of like Jack's magic beans, that grew the big beanstalk... -WB2WIK/6 "If everything seems under control, you're just not going fast enough." -; /archives//html/Amps/2002-06/msg00161.html (8,607 bytes)
107. [Amps] Bird PEP board (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 3 May 2002 07:31:20 -0700; If the IC draws 2mA and requires 6v, why not eliminate the regulator and just use a 1.5k resistor in series? WB2WIK/6 "Each success only buys an admission ticket to a more difficult problem." -- Henr; /archives//html/Amps/2002-05/msg00020.html (7,586 bytes)
108. [Amps] P600M diodes in HT supplies (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 3 May 2002 12:55:25 -0700; Theoretically, it shouldn't matter whether the rectifiers are fast-recovery or not for a 120 Hz application; however, diodes in a series string will handle transients much better if their recovery ti; /archives//html/Amps/2002-05/msg00023.html (9,726 bytes)
109. [Amps] Rectifier diode strings (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 6 May 2002 07:46:30 -0700; [Steve Katz] Not necessarily. Don't know where you came up with that, but Cj is inversely proportional to Vr and varies with waveform -- large junctions are >>>10pF when lightly inverse biased. [Ste; /archives//html/Amps/2002-05/msg00051.html (11,197 bytes)
110. [Amps] Copper Pi tank coil oxidisation (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 8 May 2002 08:27:58 -0700; //Far as I can tell, the shininess is of value for photographs only. However, I used to coat my tank inductors, etc, with a wipe-on silver plating compound called "Kool Amp," which added a thin silv; /archives//html/Amps/2002-05/msg00088.html (8,321 bytes)
111. [Amps] al-1500 parasitic?? or some other problem? (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Tue, 14 May 2002 14:41:50 -0700; Okay, I'll ask the seemingly stupid but logical question: What are you using to measure this spur? Have you tried using something else? (That is, if you're using a receiver, have you tried a differen; /archives//html/Amps/2002-05/msg00199.html (11,984 bytes)
112. [Amps] Aluminum Anodizing (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 15 May 2002 07:49:47 -0700; [Steve Katz] Any anodizing shop (consult Yellow Pages for your area) can bead-blast and re-anodize anything made from aluminum. And, if you have this done, you can choose a new color for the anodize; /archives//html/Amps/2002-05/msg00216.html (7,524 bytes)
113. [Amps] Aluminum Anodizing (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 15 May 2002 09:11:38 -0700; Sorry, Terry! I've never lived in Bakersfield! Here in L.A., there are a plethora of resources for aluminum anodizing, and none that I know have any minimum order or anything...just walk in and hand; /archives//html/Amps/2002-05/msg00219.html (9,951 bytes)
114. [Amps] al-1500 parasitic?? or some other problem? (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 15 May 2002 11:36:18 -0700; //Seems obvious this is NOT a parasitic, it's a product created elsewhere. I've seen this kind of thing many times in densely populated contest stations, and it's often quite surprising what's cause; /archives//html/Amps/2002-05/msg00220.html (15,411 bytes)
115. [Amps] ameritron manual (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 17 May 2002 10:07:39 -0700; Possibly this has been addressed, but: Ameritron ships a manual with each amplifier, so I don't understand their obligation to ship spares. Last I checked their manuals were on line, available for do; /archives//html/Amps/2002-05/msg00276.html (8,895 bytes)
116. [Amps] ameritron manual (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 17 May 2002 10:50:20 -0700; //Got it. I see some of the manuals (AL-1500) are also simply not there for download, at least not as of today. //However, as someone who's in the equipment manufacturing business for several (succe; /archives//html/Amps/2002-05/msg00280.html (10,736 bytes)
117. [Amps] Molex Connectors Needed (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 20 May 2002 07:34:56 -0700; Have you tried Digi-Key? They're a Molex distributor who sells in small quantities. WB2WIK/6 "Each success only buys an admission ticket to a more difficult problem." -- Henry Kissinger; /archives//html/Amps/2002-05/msg00309.html (7,741 bytes)
118. [Amps] Molex Connectors Needed (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 20 May 2002 09:01:07 -0700; No sweat, Terry. I've been using Digi-Key (founded by hams!) for many years... 73, Steve WB2WIK/6 "Each success only buys an admission ticket to a more difficult problem." -- Henry Kissinger; /archives//html/Amps/2002-05/msg00311.html (9,305 bytes)
119. [Amps] Alpha 99 above 18 MHZ ? (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 20 May 2002 11:04:15 -0700; 'Sfunny, the A99 should xmit just fine on 21 MHz, as the only two locked out positions are 24 and 28 MHz.... I called Cross Link and got right through to somebody, just now (11:10am PDT), so your fri; /archives//html/Amps/2002-05/msg00314.html (8,591 bytes)
120. [Amps] Non-linear subharmonics was: Nonsense, AL-1500 parasitic (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Tue, 21 May 2002 08:23:28 -0700; [Steve Katz] But they did have a very interesting smell, when they got hot and failed. Of course, then, so did Selenium. -WB2WIK/6; /archives//html/Amps/2002-05/msg00334.html (7,776 bytes)

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