Search String: Display: Description: Sort:

Results:

References: [ +from:dezrat1242@yahoo.com: 1185 ]

Total 1185 documents matching your query.

301. Re: [Amps] Life of 3CX800 tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 10 Dec 2009 10:16:29 -0800
ORIGINAL MESSAGE: REPLY: It sounds like the tubes have lost some emission, but as long as it produces more than legal limit output, so what? Brand new tubes start losing emission the minute you start
/archives//html/Amps/2009-12/msg00267.html (8,053 bytes)

302. Re: [Amps] 3-500z Plate voltage... (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 11 Dec 2009 07:28:29 -0800
ORIGINAL MESSAGE: REPLY: Plate voltage can be applied at any time, filament or cathode hot or cold or in between. What you should NOT do is draw any plate current until the filament or cathode is ful
/archives//html/Amps/2009-12/msg00298.html (7,607 bytes)

303. Re: [Amps] Excessive Plate Voltage Henry 2KD-5 (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sat, 12 Dec 2009 16:53:15 -0800
ORIGINAL MESSAGE: REPLY: That is a bit strange, but here is how I would approach the problem. First of all, make sure you are not applying 240 VAC with the tap on the transformer set for 120 VAC. Ass
/archives//html/Amps/2009-12/msg00310.html (8,716 bytes)

304. Re: [Amps] Isolation Transformer (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 14 Dec 2009 13:37:21 -0800
ORIGINAL MESSAGE: REPLY: We are drifting off the original topic a bit here, but RF should never be "grounded". RF energy is expensive to generate and should never be wasted by running it through loss
/archives//html/Amps/2009-12/msg00329.html (8,898 bytes)

305. Re: [Amps] "Stacking" power supplies?? how? (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 08:39:18 -0800
ORIGINAL MESSAGE: REPLY: The usual way is to insert a small value resistor in the + lead if each and then parallel them. The value of the resistor should create a drop of about .5 V or so under full
/archives//html/Amps/2009-12/msg00338.html (9,097 bytes)

306. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 12:55:24 -0800
ORIGINAL MESSAGE: REPLY: The original post asked for a tube that will run at 3.8 kV.... the max spec for the GS-35b is 3.0 kVDC. Don't be fooled by the "instantaneous value" spec of 6.0kV. In normal
/archives//html/Amps/2009-12/msg00345.html (7,760 bytes)

307. Re: [Amps] Alternative cooling strategies for SB-220? (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 16:38:45 -0800
ORIGINAL MESSAGE: REPLY: Not having an SB-220 I can't say how well it would fit, but the EBM-Papst blowers are powerful and quiet, although expensive. In my 8877 amp I am using a G2E108-AA05-44 which
/archives//html/Amps/2009-12/msg00357.html (8,793 bytes)

308. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 16:55:52 -0800
ORIGINAL MESSAGE: REPLY: Because that's how amplifiers with resonant anode tank circuits work. At idle, the DCV on the anode will be whatever the supply is. When driven to full output, on the negativ
/archives//html/Amps/2009-12/msg00359.html (8,784 bytes)

309. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 17:04:53 -0800
ORIGINAL MESSAGE: REPLY: If you ever apply for a job as a design engineer you might want to leave that off your resume. :-) 73, Bill W6WRT _______________________________________________ Amps mailing
/archives//html/Amps/2009-12/msg00360.html (8,535 bytes)

310. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 20:17:22 -0800
ORIGINAL MESSAGE: REPLY: You are right, it is not relevant and I'll tell you why. Manufacturers often make production runs of a particular part which can and do vary slightly from one run to another.
/archives//html/Amps/2009-12/msg00365.html (9,551 bytes)

311. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 15 Dec 2009 23:28:01 -0800
ORIGINAL MESSAGE: REPLY: If a person knows how to do proper design first and then chooses to CAREFULLY design an amp for his personal use which exceeds a spec or two, I have no problem with that. Wha
/archives//html/Amps/2009-12/msg00368.html (9,572 bytes)

312. Re: [Amps] Russian Power Tubes (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Wed, 16 Dec 2009 22:48:00 -0800
ORIGINAL MESSAGE: REPLY: I'm not sure it's fair to say a tetrode circuit is more complicated. True, they require a screen supply, but most tetrodes can be run without an input coupling network and it
/archives//html/Amps/2009-12/msg00387.html (8,499 bytes)

313. [Amps] Question about GS-35b efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 17 Dec 2009 20:13:37 -0800
I have a question about the plate efficiency of a GS-35b amplifier. I have built two of them for 160-10 meters, and while they worked ok, the efficiency was not as good as I expected. In both cases I
/archives//html/Amps/2009-12/msg00416.html (8,237 bytes)

314. Re: [Amps] Question about GS-35b efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 00:07:14 -0800
ORIGINAL MESSAGE: REPLY: Dream on. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-12/msg00422.html (7,616 bytes)

315. Re: [Amps] QSK switching time (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 11:35:21 -0800
ORIGINAL MESSAGE: REPLY: I've never heard of "reversing the SWR". Could you please explain? 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http:/
/archives//html/Amps/2009-12/msg00452.html (7,475 bytes)

316. Re: [Amps] Question about GS-35b efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 11:45:37 -0800
ORIGINAL MESSAGE: REPLY: Wash't Prometheus the mythical god who brought fire to humankind? Will a Prometheus amp bring fire to my shack? :-) 73, Bill W6WRT ___________________________________________
/archives//html/Amps/2009-12/msg00454.html (8,561 bytes)

317. Re: [Amps] Does Ameritron have the industrys worse customer service? (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 21:29:14 -0800
ORIGINAL MESSAGE: REPLY: Carl hates everyone, as you will learn if you stay on this reflector. However, he can be useful, much like a dog that piddles on the floor but occasionally catches a rat. :-)
/archives//html/Amps/2009-12/msg00477.html (9,693 bytes)

318. Re: [Amps] Question about GS-35b efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 21:32:51 -0800
ORIGINAL MESSAGE: REPLY: Are you serious? If so, I am appalled!!!! 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mai
/archives//html/Amps/2009-12/msg00478.html (9,554 bytes)

319. Re: [Amps] GS-35B efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 22:11:48 -0800
IGINAL MESSAGE: REPLY: I suspect the difference is probably in the grid structure. This tube was originally designed as a radar pulse tube and is no doubt optimized for that service, not for linear a
/archives//html/Amps/2009-12/msg00482.html (8,550 bytes)

320. Re: [Amps] Question about GS-35b efficiency (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 18 Dec 2009 22:16:45 -0800
ORIGINAL MESSAGE: REPLY: I am crushed, but I will try to pull it together and find a reason to go on living. Pray for me. :-) 73, Bill W6WRT _______________________________________________ Amps maili
/archives//html/Amps/2009-12/msg00483.html (9,110 bytes)

Current List: 301 - 320
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu