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161. Re: [Amps] 3CPX800A7 sources? (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sun, 29 Jan 2012 07:28:11 -0600
Richardson has that tube: http://www.rell.com/Pages/Product-Details.aspx?productId=10012 You got highbrow taste in tubes. Get ready to pay $$$ 73 Rob K5UJ On Sun, Jan 29, 2012 at 6:28 AM, Steve Flood
/archives//html/Amps/2012-01/msg00255.html (7,244 bytes)

162. Re: [Amps] 3CX400/3CX800 Socket (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 30 Jan 2012 12:01:18 -0600
Adding a 3rd tube is an interesting issue. First I am speaking in general terms. I am not familiar with the 76. I have pondered this as a paper exercise and came away thinking there is a lot more to
/archives//html/Amps/2012-01/msg00296.html (8,542 bytes)

163. Re: [Amps] 3CX400/3CX800 Socket (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 30 Jan 2012 14:51:50 -0600
Thanks Carl; that's what I figured with alpha--not at all like adding a third tube to a SB220. 73 Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http:/
/archives//html/Amps/2012-01/msg00301.html (8,411 bytes)

164. Re: [Amps] Different amp recommendations (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 6 Feb 2012 11:47:42 -0600
I have doubts about the AL82 doing 1500 watts 100% duty cycle for very long. Knowing the p.s. in that amp you'll be right at its limit, right at the Ip limit of the tubes, right at or a bit above the
/archives//html/Amps/2012-02/msg00042.html (7,828 bytes)

165. Re: [Amps] BC-375E Switch (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 6 Feb 2012 11:59:37 -0600
Not to steal the topic but at a swap meet yesterday I bought two Ohmite rotary non-shorting switches (2 bucks each NIB) rated at 30A 300V 60 cycles, 150 v. between contacts. Single wafer six position
/archives//html/Amps/2012-02/msg00043.html (9,303 bytes)

166. Re: [Amps] Different amp recommendations (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 6 Feb 2012 18:45:10 -0600
Not looking for an argument, but nothing you have written has unsubstantiated what I posted. As I wrote earlier, the factor is transmit time. someone wrote that Ameritron says 1.5 KW with that amp fo
/archives//html/Amps/2012-02/msg00052.html (10,544 bytes)

167. Re: [Amps] Mysterious problem with my FL-2100b (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 9 Feb 2012 05:21:53 -0600
If the high vswr is on the input to the FL2100B except on 40 m. then my guess is the tuned input for each band is not getting switched in properly. The switching scheme, which is probably involving t
/archives//html/Amps/2012-02/msg00069.html (8,115 bytes)

168. Re: [Amps] Different amp recommendations (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 9 Feb 2012 12:13:53 -0600
If you really want BUILT and you don't want to deal with getting around the export only thing and you don't want to spend the ridiculous dollars for an old Alpha dual 8877 or 8K and you don't want to
/archives//html/Amps/2012-02/msg00079.html (10,357 bytes)

169. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 13 Feb 2012 21:10:48 -0600
In addition EPD makes a good product but plan on spending at least $400, perhaps more. http://epd-inc.com/ How much are you prepared to spend? Because of the price of copper any custom plate iron you
/archives//html/Amps/2012-02/msg00137.html (8,521 bytes)

170. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 14 Feb 2012 05:17:05 -0600
In your long description you said nothing about the filter caps in use. Please describe them. Ideally I would want one or more oil caps giving around 50 uF with 6 KVWDC 73 Rob K5UJ __________________
/archives//html/Amps/2012-02/msg00145.html (8,754 bytes)

171. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 14 Feb 2012 10:38:57 -0600
Steve: It looks like you are in pretty good shape with the caps. Gerald: You typically have two hots and ground no neutral return. You connect a 120 v. fan across one hot and CT on the plate iron pri
/archives//html/Amps/2012-02/msg00156.html (10,953 bytes)

172. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 15 Feb 2012 10:19:18 -0600
I have a 10 KV 200 uF oil cap weighs 175 lbs and that's why I'm hesitant to use it. Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest
/archives//html/Amps/2012-02/msg00173.html (8,359 bytes)

173. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 15 Feb 2012 15:32:26 -0600
Yes it's shorted. It's one of those Maxwell energy discharge caps which means it has to be derated to 6 KV for WVDC. I bought it on eBay in a Gov't auction. I know from a friend's experience that ins
/archives//html/Amps/2012-02/msg00178.html (9,950 bytes)

174. Re: [Amps] Source for plate xfrmer (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 15 Feb 2012 18:56:43 -0600
Well, I wanted a single cap and a regulated supply. Too much? I mentioned having it partly for a sanity check. I have a friend who once built a 4x1 amp with a 6 KV supply. When he fired it up he got
/archives//html/Amps/2012-02/msg00188.html (12,189 bytes)

175. Re: [Amps] amp supply lk500 za (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sat, 18 Feb 2012 10:32:18 -0600
How common is the LK550? What do they usually sell for? tnx Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo
/archives//html/Amps/2012-02/msg00219.html (8,017 bytes)

176. Re: [Amps] 833A/GU-48 x4 Amp support (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sun, 26 Feb 2012 14:59:34 -0600
833As are supposed to get squirrely (that is American for unstable) above 40 m. if I am not mistaken. 73 Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2012-02/msg00269.html (8,671 bytes)

177. Re: [Amps] 833A/GU-48 x4 Amp support (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 27 Feb 2012 17:16:35 -0600
Then there's fixed vacuum cap mounting hardware--unbelievable. Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listi
/archives//html/Amps/2012-02/msg00303.html (8,829 bytes)

178. Re: [Amps] Bleeders (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 1 Mar 2012 05:33:38 -0600
Because in some cases you need a continuous small load on the h.v. power supply. Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting
/archives//html/Amps/2012-03/msg00002.html (7,430 bytes)

179. Re: [Amps] Bleeders (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 1 Mar 2012 05:38:05 -0600
how long is the pulse. I learned yesterday we use spools of RG220 to get a 1.6 usec pulse to fire a kicker magnet in a storage ring. 73 Rob K5UJ _______________________________________________ Amps m
/archives//html/Amps/2012-03/msg00003.html (8,934 bytes)

180. Re: [Amps] Henry 4-K ultra blower failure (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 2 Mar 2012 20:41:26 -0600
I am completely unfamiliar with the 4K Ultra but I'll venture to say their recommendation may have to do with dimensions and mating with original holes and voltage/current demand. Probably any recomm
/archives//html/Amps/2012-03/msg00042.html (7,963 bytes)

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