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1. Re: [Amps] Triode vs Tetrode Amp (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 26 Apr 2007 21:47:14 -0400; The National NCL2000 with 8122 tetrodes ran a swamped grid input that could be configured for either 10-20 or 50-100W drive. IMD was nothing fancy, ~ -28 or so, but this was a 1963 design. The FCC CB; /archives//html/Amps/2007-04/msg00332.html (10,592 bytes)
2. Re: [Amps] Sb-200 add 6m (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Fri, 27 Apr 2007 14:30:57 -0400; There have been several "conversion" articles published over the past 30+ years on adding 6M by eliminating 10 or 15M and making the 10M switch position 6M. These are all poorly thought out, very ine; /archives//html/Amps/2007-04/msg00344.html (7,665 bytes)
3. [Amps] New Postal Rates may really shock you (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 28 Apr 2007 15:39:09 -0400; New USPS rates go into effect May 14. It's the international ones that carry sticker shock. There will be no more Economy (Surface) Parcel Post. Everything will go air with a corresponding monster ju; /archives//html/Amps/2007-04/msg00357.html (6,475 bytes)
4. Re: [Amps] sb220 (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sun, 29 Apr 2007 16:29:42 -0400; With 50-60W of drive you should see around 500W out with a single tube in the SB220 in the CW position and tuned for 125 ma grid current. Not much difference with 50W into two tubes. With 2 tubes and; /archives//html/Amps/2007-04/msg00368.html (8,043 bytes)
5. Re: [Amps] Transformer question... (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 8 May 2007 20:04:56 -0400; Those oldies were made for tube rectifier and choke input filtering. Size would indicate something in the 400-500 ma range at ~2500 or 3000 VDC, I dont have quick access to my old UTC catalogs to con; /archives//html/Amps/2007-05/msg00082.html (9,642 bytes)
6. Re: [Amps] W6PO 2m amp (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 9 May 2007 20:21:11 -0400; Are you able to tune the grid control for a current peak? Also do the output controls tune properly or are they at one extreme or the other? Have you tried to Grid Dip the input and outputs? Id trust; /archives//html/Amps/2007-05/msg00096.html (9,461 bytes)
7. Re: [Amps] attaching a heat spreader to a heat sink (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 22 May 2007 16:01:32 -0400; Machine shops charge set up time as well as actual machining, it could get expensive. One simple way to be sure a surface is flat is to lay a sheet of wet/dry sandpaper on a flat pane of glass. Use p; /archives//html/Amps/2007-05/msg00175.html (10,074 bytes)
8. Re: [Amps] Replacement plate choke for Alpha 76 (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 22 May 2007 19:36:44 -0400; Row in NYC, later bought stuff at Lafayette HQ in Jamaica, NY (in the old Model T Ford plant) and a year or so later saw all the WW2 Surplus at RS Tremont St when I was in the USN and the ship pulle; /archives//html/Amps/2007-05/msg00179.html (20,662 bytes)
9. Re: [Amps] FW: attaching a heat spreader to a heat sink (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Fri, 25 May 2007 09:28:57 -0400; Ive thought about that with my 1296 and 2304 amps using a pair of water cooled 3CX100A7's, but since I quit drinkin' about 7 years ago its become moot. Carl KM1H _____________________________________; /archives//html/Amps/2007-05/msg00209.html (8,018 bytes)
10. Re: [Amps] FW: attaching a heat spreader to a heat sink (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 26 May 2007 09:01:18 -0400; Id love to have something like that to play with Bob. After the Svetlana 4CX1600A fiasco I dont have many choices to get QRO on 1296. Never tried EME but with my hilltop location and a negative horiz; /archives//html/Amps/2007-05/msg00214.html (10,536 bytes)
11. Re: [Amps] Advice please Ameritron amp (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 26 May 2007 19:05:48 -0400; The AL82 is a stable and rugged amp not prone to problems. Are both tubes lit? What is the idle current? With the cover off and driving see that one tube isnt getting red while the other plate is dar; /archives//html/Amps/2007-05/msg00221.html (9,831 bytes)
12. Re: [Amps] tubes (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 28 May 2007 08:30:34 -0400; You plus a handfull of hams and a million CBers all want the same limited stash. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contestin; /archives//html/Amps/2007-05/msg00234.html (7,624 bytes)
13. Re: [Amps] Single band amp design, and builder (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 29 May 2007 15:07:24 -0400; I would submit that buying 6 good multiband commercial 1500W amps on the used market would be cheaper and smaller than homebrew. While I and many others here could build such a project I doubt if any; /archives//html/Amps/2007-05/msg00249.html (8,954 bytes)
14. [Amps] AL-1500 For Sale (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 2 Jun 2007 17:49:07 -0400; I copied this off an obscure form, Contact him if youre interested. FOR SALE: Ameritron AL-1500 Clean amp for sale. Excellent condition. 60 watts drive for 1500 watts out. 160-10. Manual and original; /archives//html/Amps/2007-06/msg00005.html (6,506 bytes)
15. [Amps] Lead on parts for Create RC5A needed (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sun, 3 Jun 2007 20:16:25 -0400; Ive already tried over on Towertalk and got some items. Here is what I need to finish repairing a pair of dead ones: Output flange Potentiomer gear, including the one on the main shaft Bottom housing; /archives//html/Amps/2007-06/msg00018.html (6,430 bytes)
16. [Amps] Replacing oil in a Bird load (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 7 Jun 2007 10:16:18 -0400; The oil in my 2500W load smells burnt and Im concerned that it has lost its effectiveness as well as possibly affecting performance at UHF. Does it wear out and what is a good replacement these days?; /archives//html/Amps/2007-06/msg00031.html (6,609 bytes)
17. Re: [Amps] Replacing oil in a Bird load (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 7 Jun 2007 20:08:45 -0400; Tnx for the info on Diala Jim; I'll try and find a source of a few gallons of AX tmw. The resistor is fine with a RL of 27dB at 1296. This was a special build for RCA back in the LPTV days and was sp; /archives//html/Amps/2007-06/msg00037.html (8,145 bytes)
18. Re: [Amps] HV transformer buzzing!! Help Please (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sun, 10 Jun 2007 15:27:12 -0400; Old iron was often built with wood spacers and wedges driven in between the core and the laminations. Over time the wood deteriorates and the core possibly shrinks a tiny bit from compression of the; /archives//html/Amps/2007-06/msg00053.html (11,721 bytes)
19. Re: [Amps] HV transformer buzzing!! Help Please (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 11 Jun 2007 13:54:35 -0400; Hmm, Im big into boatanchors but Ive never thought of them as even remotely romantic. When I want true nostalgia I take my 1926 Ford Model T coupe with a blown (supercharged for non gearheads)V8 flat; /archives//html/Amps/2007-06/msg00072.html (8,939 bytes)
20. [Amps] Xfmr and or case for Amp Supply LK-800 wanted (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 12 Jun 2007 11:26:14 -0400; The case is the same for the LK-550 and LK-800, transformers are different. If anyone has the LK-800 xfmr I'd be interested in that also. Carl KM1H _______________________________________________ Amp; /archives//html/Amps/2007-06/msg00079.html (6,376 bytes)

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