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341. Re: [Amps] Burle 4651 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Tue, 22 Jan 2008 18:15:46 -0500
Thats one of those limited production (expensive) tetrodes built for the military. 1500W dissipation with a very robust screen grid if I remember. Just dont blow it otherwise you will be rebuilding t
/archives//html/Amps/2008-01/msg00153.html (7,932 bytes)

342. Re: [Amps] Warm up time for SB-200? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 23 Jan 2008 12:05:39 -0500
Its prudent to allow about 30 seconds of on time before transmitting. Instant on aint exactly instant. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2008-01/msg00160.html (7,631 bytes)

343. Re: [Amps] Warm up time for SB-200? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 23 Jan 2008 21:34:58 -0500
Most tube manufacturers specify a settle time to reach full emission and temperature stability with thoriated tungsten filaments. They vary from 10-30 seconds and I prefer to err on the conservative
/archives//html/Amps/2008-01/msg00162.html (9,481 bytes)

344. Re: [Amps] MLA-2500 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 09:37:39 -0500
The parasitic mod is the last thing that amp needs. However 160M loading has always been an issue. You can increase the fixed C on the Load side which will help a little. You can also add 3-4 turns o
/archives//html/Amps/2008-01/msg00172.html (8,534 bytes)

345. Re: [Amps] MLA-2500 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 10:29:00 -0500
The 8873/8874/8875 are very tame tubes when it comes to parasitics. Often the original resistors are still in spec unless the tubes have really been beat on. Carl KM1H You mean the Rich Measures para
/archives//html/Amps/2008-01/msg00174.html (7,717 bytes)

346. Re: [Amps] MLA-2500 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 10:31:42 -0500
Somethings definitely wrong then. Id start by closely inspecting the bandswitch and plate choke. BTW, the cover has to be in place when tuning, the steel that close to the coil has a huge effect. Car
/archives//html/Amps/2008-01/msg00175.html (8,723 bytes)

347. Re: [Amps] MLA-2500 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 14:21:33 -0500
Lets get something straight right off. There is nothing wrong with the design that would cause your symtoms. Ive already outlined the few design problems. Gold sputtering is a myth that has been push
/archives//html/Amps/2008-01/msg00185.html (11,394 bytes)

348. Re: [Amps] MLA-2500 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 14:46:37 -0500
One, 800pf total. Its the same cap used in later Heath, Amp Supply, Ameritron and others. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.
/archives//html/Amps/2008-01/msg00187.html (9,066 bytes)

349. Re: [Amps] Dentron MLA-2500 & BAMA (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 15:49:35 -0500
Go to the mirror site. Just scroll down and read the right hand side. Carl _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/li
/archives//html/Amps/2008-01/msg00191.html (8,004 bytes)

350. Re: [Amps] Dentron MLA-2500 & BAMA (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 25 Jan 2008 19:43:47 -0500
Its because you dont have a djvu viewer. Read all the info and instructions on BAMA. Schematic attached to your addy let me know if it works for you.. Carl -- Original Message -- From: "EP Swynar" <g
/archives//html/Amps/2008-01/msg00196.html (9,981 bytes)

351. Re: [Amps] Dentron Clipperton L Questions (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 27 Jan 2008 21:33:13 -0500
Welcome aboard Ron. The L has about 150-180 ma idle current in SSB and substantially less in the CW position. Your tubes sound just fine. Do a search in the forum archives for discussions on the L an
/archives//html/Amps/2008-01/msg00224.html (12,359 bytes)

352. Re: [Amps] Dentron Clipperton L Questions (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 27 Jan 2008 21:51:28 -0500
Sounds about right. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2008-01/msg00227.html (13,396 bytes)

353. Re: [Amps] off topic but...... (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Mon, 28 Jan 2008 10:47:44 -0500
Did it have a green card? Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2008-01/msg00236.html (8,990 bytes)

354. Re: [Amps] More Amperex 3-500Z (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Thu, 31 Jan 2008 12:27:31 -0500
The Drake L-7 manual lists both brands and expected idling currents. CW and SSB respectively: Amperex 100/160 ma Eimac 170/220 As bias is not adjustable in most 3-500 amps it then holds that the Ampe
/archives//html/Amps/2008-01/msg00271.html (11,520 bytes)

355. Re: [Amps] More Amperex 3-500Z (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Thu, 31 Jan 2008 16:09:27 -0500
April 1980. However further looking finds the exact same info in a 1970 L-4B manual. Both manuals state that EIMAC or Amperex 3-400Z's or 3-500Z's are installed at the factory. Many years thru the 60
/archives//html/Amps/2008-01/msg00276.html (14,812 bytes)

356. Re: [Amps] 3-400 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Thu, 31 Jan 2008 21:10:16 -0500
About 125 ma per tube for that amp for best linearity. Plate current will be 700-800 ma with 100W drive. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.co
/archives//html/Amps/2008-01/msg00283.html (7,221 bytes)

357. Re: [Amps] 3-400 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 1 Feb 2008 08:51:32 -0500
Hmmmm, have you ever tried loading a pair of 3-500's beyond 300 ma and watched the power? Im talking about a 2500V or so PS. Misprint or not, it is completely wrong. Carl KM1H _______________________
/archives//html/Amps/2008-02/msg00001.html (8,415 bytes)

358. [Amps] Alpha 76CA questions (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Tue, 5 Feb 2008 08:12:00 -0500
Does anyone have info on the input network for this amp? From the manual Im assuming it is a balun but of what ratio? And is it the same for 2 and 3 holers? Resistor values? Carl KM1H _______________
/archives//html/Amps/2008-02/msg00025.html (6,275 bytes)

359. Re: [Amps] 2N1159 (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 10 Feb 2008 17:57:33 -0500
The 2N6246 which I mentioned yesterday is silicon and is a direct swap in the NCL-2000. The only difference is a slightly different bias adjustment range and that can be shifted if necessary by chang
/archives//html/Amps/2008-02/msg00051.html (8,600 bytes)

360. Re: [Amps] Silver (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Tue, 12 Feb 2008 14:19:44 -0500
Muriatic acid is also used in swimming pools and can be found at most hardware stores. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
/archives//html/Amps/2008-02/msg00063.html (10,230 bytes)


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