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1. [Amps] Mobile amps (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Thu, 21 Jul 2005 21:57:37 -0500; All, Some have been buying those 11 meter mobile amps and converting them over for amateur use. The ones which use un-etched PC boards, etc. The RF keying in these are generally rats nests and pretty; /archives//html/Amps/2005-07/msg00246.html (7,438 bytes)
2. Re: [Amps] Mobile amps (score: 1): Author: Dan Sawyer <dansawyer@earthlink.net>; Date: Fri, 22 Jul 2005 06:59:46 -0700; Will, Is it practical to adapt these to work on 80 through 10 meters? Thanks, Dan _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mai; /archives//html/Amps/2005-07/msg00256.html (7,798 bytes)
3. Re: [Amps] Mobile amps (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Fri, 22 Jul 2005 09:27:29 -0500; Dan, Yes, they are really the same wide-banded amps that have been around for years and the same as in the Motorola app notes. Most use the 2SC2879 transistors. The only thing is for them to be linea; /archives//html/Amps/2005-07/msg00257.html (10,701 bytes)
4. Re: [Amps] Mobile amps (score: 1): Author: n8cdw@direcway.com; Date: Fri, 22 Jul 2005 12:19:31 -0500; Hi Do you have any amps you would recommend for this project? Carl N8CDW _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/list; /archives//html/Amps/2005-07/msg00260.html (12,241 bytes)
5. Re: [Amps] Mobile amps (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Fri, 22 Jul 2005 12:56:05 -0500; Carl, They're pretty much all the same, or the ones that use dead bug construction except for a few. There is the following brands I know of that I've seen the innards of that were ok to convert. Bel; /archives//html/Amps/2005-07/msg00261.html (14,605 bytes)
6. Re: [Amps] Mobile amps (score: 1): Author: "K4IBC" <k4ibc@bellsouth.net>; Date: Fri, 22 Jul 2005 16:10:10 -0400; While I noticed you didn't mention a certain brand that appears often forsale. What about those made in Italy ? It maybe a sore subject I don't know? Bill K4IBC -- Original Message -- From: "Will Mat; /archives//html/Amps/2005-07/msg00265.html (16,232 bytes)
7. Re: [Amps] Mobile amps (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Fri, 22 Jul 2005 17:03:16 -0500; Bill, Your right, I did forget the RM Italy amps. I personally wouldn't recommend one, theyr'e pure junk. They use self tapping screws to hold the RF transistors down. What happens is when they run t; /archives//html/Amps/2005-07/msg00268.html (20,552 bytes)
8. [Amps] Mobile Amps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 31 Jul 2005 09:28:15 -0400; All, I ran across this solid state amp on ebay and thought it might be a good one to convert over to amateur service. I about bet now it's class C but a bias circuit can be added. It doesn't have a g; /archives//html/Amps/2005-07/msg00359.html (8,079 bytes)
9. Re: [Amps] Mobile Amps (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Sun, 31 Jul 2005 10:14:20 -0400; And the reserve is $950, for an amp that needs major mods to work on the ham bands??? It's hard enough to find a ham willing to spend that much on legit ham gear, and it's not even made in Japan! ___; /archives//html/Amps/2005-07/msg00360.html (9,402 bytes)
10. Re: [Amps] Mobile Amps (score: 1): Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>; Date: Sun, 31 Jul 2005 09:55:07 -0500; Will, I seen you discuss adding "air variables", etc. to the output circuits of transistor amps before... and can't quite figure out why one would do that. I've built and converted many transistor am; /archives//html/Amps/2005-07/msg00362.html (10,369 bytes)
11. Re: [Amps] Mobile Amps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 31 Jul 2005 11:16:38 -0400; David, The air variable is used in the output tuning. I've seen some use fixed capacitance here and a step up using a mica compression cap. However, in these large ones, I've seen many burn out. What; /archives//html/Amps/2005-07/msg00363.html (13,262 bytes)
12. Re: [Amps] Mobile Amps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 31 Jul 2005 11:32:34 -0400; Bob, Actually, it will work on all the bands, it just wont have a low pass filter to keep a lower band from interfering with a higher one. That's all the bandpass boards are I've seen in the Ham mobi; /archives//html/Amps/2005-07/msg00364.html (11,133 bytes)
13. Re: [Amps] Mobile Amps (score: 1): Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>; Date: Sun, 31 Jul 2005 13:34:04 -0500; Will... I think you missed the point. If designed correctly, there is absolutely no reason for an adjustable capacitor in the output circuit. It must be a comfort thing... some folks can't seem to ge; /archives//html/Amps/2005-07/msg00367.html (15,262 bytes)
14. Re: [Amps] Mobile Amps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 31 Jul 2005 17:26:50 -0400; David, Ok I see what you mean. No, the way I built a few was to use the air variable but mount it inside the case where you had to take the top off to tune it. Now that guy who built the one in quest; /archives//html/Amps/2005-07/msg00371.html (17,419 bytes)
15. Re: [Amps] Mobile Amps (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Mon, 01 Aug 2005 00:41:27 +0200; Will and others, Check this out: http://home.hetnet.nl/~l.van.lelieveld/index.html Very interesting site aboute "make overs" of CB amps for amateur radio legal and linear use. Too bad the text is in; /archives//html/Amps/2005-07/msg00372.html (19,131 bytes)
16. [Amps] Mobile amps (score: 1): Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>; Date: Sun, 14 Aug 2005 14:13:39 -0500; Now here is a serious mobile amp for you... Just need to get it off 11 meters... http://cgi.ebay.com/Ampilifer-3cx3000A7-tube_W0QQitemZ5798807875QQcategoryZ48700QQrdZ1QQcmdZViewItem Sincerely, Dr. Wi; /archives//html/Amps/2005-08/msg00496.html (7,055 bytes)
17. Re: [Amps] Mobile amps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 14 Aug 2005 16:26:12 -0400; It's got a whopper of a plate transformer and runs off of about 12 Vac 3 phase. I'll about bet I know who wound that, there up in New Jersy. I'd say the amp was built in Florida though. You can sure; /archives//html/Amps/2005-08/msg00501.html (8,311 bytes)
18. Re: [Amps] Mobile amps (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Sun, 14 Aug 2005 22:45:25 +0200; I found the difference between 6 kw and 1.2 kw from the mobile neglectible. Also the centerloaded vertical did not like 6 kW, so I settled for running QRP from the automobile, using the Henry SS750 o; /archives//html/Amps/2005-08/msg00505.html (8,110 bytes)
19. Re: [Amps] Mobile amps (score: 1): Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>; Date: Sun, 14 Aug 2005 18:04:31 -0500; Really... do tell... I've never run 6kW before in the ham bands. What's it like? Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC Email: bil; /archives//html/Amps/2005-08/msg00509.html (9,602 bytes)
20. Re: [Amps] Mobile amps (score: 1): Author: R.Measures <r@somis.org>; Date: Sun, 14 Aug 2005 19:01:58 -0700; On most bands, the difference between S-9 and 6db above S-9 -- i. e., no biggie. However, on 20m, reverse the numbers. cheers, Bill Richard L. Measures, AG6K, 805.386.3734. www.somis.org ____________; /archives//html/Amps/2005-08/msg00510.html (10,658 bytes)

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