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121. Re: [Amps] Moderation (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Sun, 04 Jun 2006 08:36:59 -0700
I could not agree more. Too many people hit the "reply" key instead. :-) 73, Bill W6WRT ** REPLY SEPARATOR ** ORIGINAL MESSAGE: _______________________________________________ Amps mailing list Amps@
/archives//html/Amps/2006-06/msg00102.html (7,239 bytes)

122. Re: [Amps] resonance (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Mon, 05 Jun 2006 09:23:57 -0700
That depends on how one defines "resonance". As I understand it, there are two possible definitions for a parallel tuned circuit: 1. When Xl = Xc -or2. When the impedance is maximum. If there is sign
/archives//html/Amps/2006-06/msg00125.html (9,851 bytes)

123. Re: [Amps] R. MEASURES PRAYERS ANSWERED (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Wed, 07 Jun 2006 07:17:37 -0700
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** That would be correct. Bandini is a well-known fertilizer company in the US and reagent-grade is the best you can get. 73, Bill W6WRT _________________________
/archives//html/Amps/2006-06/msg00201.html (9,210 bytes)

124. Re: [Amps] RCA 8122 Tubes (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Thu, 08 Jun 2006 06:20:14 -0700
That's a long time for tubes to sit unused. I'd suggest running them with filament power only for about 48 hours, then hi-potting them at their max rated anode voltage. If they don't arc, they are pr
/archives//html/Amps/2006-06/msg00221.html (7,618 bytes)

125. [Amps] Scotch 27 data sheet (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Wed, 14 Jun 2006 06:14:33 -0700
A data sheet for Scotch 27 tape is available at: http://www.mpsupplies.com/3mGlassClothTape27.pdf A careful reading of the sheet reveals an apparent contradiction. One part says the adhesive is therm
/archives//html/Amps/2006-06/msg00284.html (6,416 bytes)

126. [Amps] Rich is a good guy (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Sat, 24 Jun 2006 13:38:38 -0700
Contrary to some folks opinion, Rich M. is a good guy. Have a look at his website to get an idea of how helpful he can be. The hard to get items he sells are top quality and priced fairly. What more
/archives//html/Amps/2006-06/msg00351.html (6,426 bytes)

127. Re: [Amps] Heathkit SB-1000 amplifier kit. Unbulit (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Sun, 25 Jun 2006 18:55:20 -0700
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** If you do build it, be very careful that the mounting screw for the terminal that holds the filament choke does not short out to the choke. If you follow the a
/archives//html/Amps/2006-06/msg00414.html (7,651 bytes)

128. Re: [Amps] AL-80B questions (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Tue, 27 Jun 2006 06:42:33 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- Au contraire, Peter, I think this is the best question asked so far. I would recommend that you buy or borrow an MFJ-259 SWR analyzer or the equivalent and use
/archives//html/Amps/2006-06/msg00505.html (9,553 bytes)

129. Re: [Amps] Grid Protection Circuit Ideas (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Tue, 27 Jun 2006 06:54:37 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- Just paralleling diodes across the meter movement may or may not work, depending on the meter's internal resistance. The diodes won't conduct until about .6 vo
/archives//html/Amps/2006-06/msg00506.html (7,847 bytes)

130. Re: [Amps] IM distortion and such (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Tue, 27 Jun 2006 07:03:27 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- As one who has been on both sides of that fence, there is another side to it as well. Engineers have a well-deserved reputation for never quite being finished
/archives//html/Amps/2006-06/msg00507.html (10,371 bytes)

131. Re: [Amps] Parasitic Resistors (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Wed, 28 Jun 2006 08:58:59 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I recommend the kind AG6K, Rich, sells on his website. The price is right, order as few or as many as you like and they will do the job. He sells the resistors
/archives//html/Amps/2006-06/msg00578.html (8,073 bytes)

132. [Amps] A plea for fewer acronyms (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Thu, 29 Jun 2006 06:30:52 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- It took me a while to figure out what "TA" means in the above - Type Acceptance. Please guys, fewer acronyms! Unless you're sure your readers will know the acr
/archives//html/Amps/2006-06/msg00624.html (7,713 bytes)

133. [Amps] Deja vu all over again (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Thu, 29 Jun 2006 06:42:40 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- Ah, shades of threads gone by... For those new to the reflector, it was my innocent question about six or seven years ago which triggered the "grate parasitics
/archives//html/Amps/2006-06/msg00626.html (9,547 bytes)

134. Re: [Amps] QEX Innovative Tube Linear? (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Sat, 08 Jul 2006 07:49:55 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- Or a single GS-35b can be had for about $120 including shipping and will beat a box full of sweep tubes, with a very modest filament requirement and no socket
/archives//html/Amps/2006-07/msg00275.html (9,069 bytes)

135. Re: [Amps] RF Chokes (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Mon, 17 Jul 2006 07:45:02 -0700
FWIW, RF Parts sells a choke guaranteed to have no resonances in any HF band including WARC for $24.95. http://www.rfparts.com/choke.html#highrf Scroll down to RFC-3. Annoyingly, their minimum order
/archives//html/Amps/2006-07/msg00518.html (7,731 bytes)

136. [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Wed, 19 Jul 2006 08:29:35 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I'm a bit late getting into this discussion, but my curiosity has been aroused. Two questions: 1. Why not use a real fuse? There are some micro-miniature fast
/archives//html/Amps/2006-07/msg00637.html (9,994 bytes)

137. Re: [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Wed, 19 Jul 2006 12:16:29 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- That's news to me. In my experience, a fuse is one of the most reliable of all electronic components, especially when compared to the active devices in an elec
/archives//html/Amps/2006-07/msg00646.html (10,158 bytes)

138. Re: [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Thu, 20 Jul 2006 08:57:29 -0700
A typical fast blow type will open in a few seconds with 2x overload and the opening time decreases exponentially with higher overloads. I have no idea. I would not use a 1/4 watt resistor as a fuse.
/archives//html/Amps/2006-07/msg00677.html (8,526 bytes)

139. Re: [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Thu, 20 Jul 2006 09:10:23 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I have observed this phenomenon in small receiving tubes with the grid floating. No doubt it applies to their big brothers as well. My understanding is the gri
/archives//html/Amps/2006-07/msg00679.html (10,740 bytes)

140. Re: [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1)
Author: Bill Turner <dezrat@copper.net>
Date: Fri, 21 Jul 2006 06:30:21 -0700
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I think we're talking about two different problems here: 1. Excessive grid current, without internal arcing. 2. Internal arcing. A fuse, resistor or solid stat
/archives//html/Amps/2006-07/msg00754.html (11,259 bytes)

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