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References: [ +from:royanjoy@ncn.net: 309 ]

Total 309 documents matching your query.

141. [AMPS] Re: paralleling power diodes (score: 1)
Author: royanjoy@ncn.net (Roy Koeppe)
Date: Sun, 31 Jan 1999 17:16:53 -0600
Hey, I didn't ax the question. K6XK To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.co
/archives//html/Amps/1999-01/msg00676.html (11,432 bytes)

142. [Amps] Re: SB200 Grid Current... (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Wed, 26 Nov 2003 07:34:49 -0600
Re: "Hi, I hope someone can give me some hints on isolating this problem in a SB200. I don't know if there were any symptoms prior to the failure since I just got this amp. The SB200 has excessive gr
/archives//html/Amps/2003-11/msg00371.html (7,562 bytes)

143. [Amps] Re: Disc Cap Needed (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Thu, 25 Dec 2003 12:27:31 -0600
Concerning, "Anyone know of a source for some .02pF @ 1.6kv ceramic disk capacitors?? I've checked several places on the web with no luck." Radio Shack Part Number 272-160. It is 0.01 @ 2 kV, so just
/archives//html/Amps/2003-12/msg00386.html (6,341 bytes)

144. [Amps] Re: Step start...another solution (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Tue, 6 Jan 2004 08:12:59 -0600
I still start my amp on 120 VAC and step it to 240 VAC. No resistors, and it's smooth. Just a DPDT relay or even a toggle switch for purists. 73, Roy K6XK/0 __________________________________________
/archives//html/Amps/2004-01/msg00066.html (6,884 bytes)

145. [Amps] Re: matching network (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 26 Jan 2004 07:01:37 -0600
Ray asked, "That's where I'm at, and my question for the experts is: what kind of matching network at the cathodes of the 4CX-350's is recommended??" I'm not expert, but I recommend a pi-net with a w
/archives//html/Amps/2004-01/msg00292.html (6,739 bytes)

146. [Amps] Re: 18 ga wire (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 26 Jan 2004 07:08:55 -0600
About, "I'm in need of 18 ga enamel coated wire for winding toroid inductors. (etc.)" Kurt, try www.amidoncorp.com If all else fails, I have some. The type of insulation is pretty much immaterial. 73
/archives//html/Amps/2004-01/msg00293.html (6,255 bytes)

147. [Amps] Re: LK-500ZC... (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Fri, 5 Mar 2004 07:45:21 -0600
Asked... "Serial number 4017. Symptom: When A/C power switch is turned on, plate current is 325 MA and does not go to zero. Plate voltage is normal at 3200 volts DC. Grid current meter goes negative;
/archives//html/Amps/2004-03/msg00056.html (6,843 bytes)

148. [Amps] Re: LK-500ZC problem (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sat, 6 Mar 2004 12:11:55 -0600
Was stated... "It could possibly be a filament winding in the transformer that is shorted. Here's hoping it's not the transformer!" Grounding the cathodes should only cause the idling current to read
/archives//html/Amps/2004-03/msg00066.html (6,741 bytes)

149. [Amps] Re: 3-500Z tubes (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Thu, 11 Mar 2004 08:10:45 -0600
Re: "The 3-500Z tubes in my AMP INT 3-500ZC amplifier are shorted between filament and grid. There may be more wrong but this is a start. Question. What is my best source for obtaining the 3-500Z tub
/archives//html/Amps/2004-03/msg00109.html (7,568 bytes)

150. [Amps] Re: winding plate inductors (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Thu, 11 Mar 2004 08:14:57 -0600
" quick question, where can I find info about the actual winding of a plate inductor" Buy the "Lightning Calculator" from ARRL. It's super. 73, Roy K6XK ______________________________________________
/archives//html/Amps/2004-03/msg00110.html (6,700 bytes)

151. [Amps] Re: 572Bs for SB-200 (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sat, 10 Apr 2004 10:27:58 -0500
"Any tips on acceptable manufacturers for this amp? Also any suggested sources would be appreciated. I am aware of RF Parts w/Svetlana and Taylor branded tubes, but not of their performance in this a
/archives//html/Amps/2004-04/msg00070.html (7,028 bytes)

152. [Amps] Re: RF capacitors (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 12 Apr 2004 11:48:36 -0500
www.surplussales.com 73, Roy K6XK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2004-04/msg00081.html (6,240 bytes)

153. [Amps] Re: wire gauge (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sun, 18 Apr 2004 08:46:25 -0500
"Does anyone know the proper wire gauge to use to rewind the plate choke in the SB200??? I have one than looks like it's burned and I think it wise to rewind it, which is not a big problem to do. Tha
/archives//html/Amps/2004-04/msg00115.html (6,758 bytes)

154. [Amps] Re: plate choke for SB-220 (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sun, 25 Apr 2004 07:52:16 -0500
Discussed... Hi All, I am trying to find a plate choke for the SB-220 for a friend in Australia. Anyone got a spare lying around? &eth; No, but they are a piece of cake to make. See http://www.somis.
/archives//html/Amps/2004-04/msg00190.html (8,390 bytes)

155. [Amps] Re: SB-220 plate choke (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 26 Apr 2004 07:40:03 -0500
Hi All, I am trying to find a plate choke for the SB-220 for a friend in Australia. Anyone got a spare lying around? No, but they are a piece of cake to make. See http://www.somis.org/D-amplifiers4.h
/archives//html/Amps/2004-04/msg00213.html (7,070 bytes)

156. [Amps] Re: SB-220 plate choke (correction) (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 26 Apr 2004 10:41:04 -0500
In order to prevent dipping the TANK, only the 'bottom' end of the choke should be wired up. Sorry! Roy K6XK distinguish choke _______________________________________________ Amps mailing list Amps@c
/archives//html/Amps/2004-04/msg00221.html (8,260 bytes)

157. [Amps] Re: SB-1000 problem (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sat, 8 May 2004 10:57:33 -0500
Re: "I've got a Heathkit SB-1000 KW amp; uses a single 3-500z. It's got an original Eimac. The unit hasn't been used in about six years. I brought the caps up on a variac fine. With the tube removed
/archives//html/Amps/2004-05/msg00092.html (7,332 bytes)

158. [Amps] Re: HV plate choke value (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Fri, 6 Aug 2004 15:39:16 -0500
Hi Luca, (please include your call sign in your postings) You asked: "Hello All I am a new comer this mailing list , I would like to know : How to figure the correct inductance value of HV PLATE CHOK
/archives//html/Amps/2004-08/msg00063.html (8,876 bytes)

159. [Amps] Re: Pi - L net adjustment (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Tue, 10 Aug 2004 08:06:08 -0500
About, "Hello All In the first place many thanks for answers at the RF CHOKE value question and my regards for this very intresting mailist. Now l would like know the correct method for the PL NETWOR
/archives//html/Amps/2004-08/msg00085.html (7,399 bytes)

160. [Amps] Re: Need diagnostic help (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Tue, 17 Aug 2004 08:35:36 -0500
Tom, you asked this (amongst everything else)... "That can only bring me to one conclusion.....there is something wrong with my 240 line?????" Your arcing is heard originating inside the amps. So, po
/archives//html/Amps/2004-08/msg00174.html (7,237 bytes)

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