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1. [Amps] Throttling power on a valved Radio (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Fri, 11 Mar 2005 18:47:22 -0000; Hi Well we've just formed a contest group, and have gotten pretty serious about contesting already. Our main station comprises a pair of Dentron ML2500 Linears being driven by a pair of 756PROII's. I; /archives//html/Amps/2005-03/msg00292.html (7,300 bytes)
2. Re: [Amps] MLA-2500B Question (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Thu, 31 Mar 2005 21:33:01 +0100; I'd just like to add my bit to this thread... I have a Dentron ML2500B, and a Dentron ML2500 (yes two of the things). I use an Icom 756PROII and the ML2500B during contests, and have had continuous p; /archives//html/Amps/2005-03/msg00747.html (8,969 bytes)
3. [Amps] Dentron ML2500 on 50MHz (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Tue, 5 Apr 2005 21:47:25 +0100; Does anyone know if a Dentron ML2500 has been converted or is capable of being converted for 50MHz operation ? Thanks Adrian Rees (M1LCR) _______________________________________________ Amps mailing; /archives//html/Amps/2005-04/msg00112.html (6,630 bytes)
4. Re: [Amps] Dentron ML2500 on 50MHz (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Tue, 5 Apr 2005 22:42:01 +0100; Hi Jerry Well yes we are limited to 400 Watts. I have two 2500's, one is the MLA2500, the other the BA Model (no 28MHz). Apparently Jim Worsham, W4KXY has converted one to run on 50 MHz and presented; /archives//html/Amps/2005-04/msg00115.html (9,229 bytes)
5. Re: [Amps] MLA2500b plate idle current? (score: 1): Author: "rees.a@btconnect.com" <rees.a@btconnect.com>; Date: Wed, 6 Apr 2005 03:47:51 -0400; Hi Juha Both of my ML2500's are the same, hardly any current (meter just moves a smudge) although on TX I will push it as far as 50mA...(if I can remember). Adrian (M1LCR) I own a Dentron MLA2500b an; /archives//html/Amps/2005-04/msg00123.html (7,561 bytes)
6. Re: [Amps] re ebay and amps (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Tue, 12 Apr 2005 21:56:35 +0100; Just to add my little bit ...! Well, I have bought two amps from eBay. Both are Dentron ML2500's. The first was bought from a chap who gave the impression that he was the son of a late RSGB President; /archives//html/Amps/2005-04/msg00236.html (9,374 bytes)
7. [Amps] SB220 Wanted (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Mon, 2 May 2005 16:25:01 +0100; Anyone on the UK got an SB220 they want to part with ? Doesn't need bottles as I have a pair of 3-500Z's Adrian (M1LCR) _______________________________________________ Amps mailing list Amps@contesti; /archives//html/Amps/2005-05/msg00005.html (7,137 bytes)
8. [Amps] Russian Amp (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Fri, 17 Jun 2005 14:52:31 +0100; Hi all I have a few amps I use for contesting (Dentron ML2500's) anyway, my other radio passion is for Military Comms. As such I bought a GAZ 66 / R142 ex GDR / Russian Radio vehicle. Whilst hunting; /archives//html/Amps/2005-06/msg00132.html (7,390 bytes)
9. [Amps] Fizzing From Amp (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Fri, 24 Jun 2005 07:53:29 +0100; Hi all My Dentron ML2500 has just started making interesting "Fizzing" noises. This appears to be from the Tune + Load Caps, and happens whenever I Tune Up, or on air. The amp is putting out its usua; /archives//html/Amps/2005-06/msg00217.html (6,652 bytes)
10. Re: [Amps] Fizzing From Amp (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Sat, 25 Jun 2005 15:23:28 +0100; Hi all Thanks for all your assistance. Finally traced the problem to Anode cap. The spring connector on one of the bottles had become loose. Nipped it up, and all OK. Decided to give the amp a clean; /archives//html/Amps/2005-06/msg00229.html (7,720 bytes)
11. Re: [Amps] Best MLA200 conversion (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Thu, 30 Jun 2005 17:02:35 +0100; Check these out: http://www.nd2x.net/w4emf-MLA.html http://216.87.144.102/svetlana/TechBulletins/technoteNo14.asp They both deal with re-valving the ML2500. I have two MLA2500's both running fine. I; /archives//html/Amps/2005-06/msg00292.html (7,704 bytes)
12. [Amps] LK500 Amp Problem (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Tue, 19 Jul 2005 09:53:39 +0100; Hi all We have an LK 500 Amplifier (the pair of 3-500Z's model) that started to spark and arc quite badly last weekend when we tested it ready for IOTA. We've had a look at the amp, and it appears th; /archives//html/Amps/2005-07/msg00207.html (7,525 bytes)
13. [Amps] Best way to tune a Dentron ML2500 ? (score: 1): Author: "Adrian Rees (M1LCR)" <rees.a@btconnect.com>; Date: Sun, 31 Jul 2005 19:16:05 +0100; Whats the best way to tune a Dentron 2500 Linear, for max power and longest tube life ? What should the Grid Current be at maximum power ? Thanks Adrian Rees _________________________________________; /archives//html/Amps/2005-07/msg00366.html (7,564 bytes)
14. Re: [Amps] 3cx300a7 input impedance (score: 1): Author: "rees.a" <rees.a@btconnect.com>; Date: Tue, 09 Aug 2005 14:23:46 GMT; This is waht I have, hope it helps: Characteristics Plate Dissipation (Max.) 4,000 Watts Screen Dissipation (Max.) -- Watts Grid Dissipation (Max.) 225 Watts Frequency for Max. rating (CW) 110 MHz Am; /archives//html/Amps/2005-08/msg00331.html (8,762 bytes)
15. [Amps] Dentron MLA2500 (score: 1): Author: "rees.a@btconnect.com" <rees.a@btconnect.com>; Date: Mon, 24 Oct 2005 16:26:16 -0400; Hi I have a Dentron MLA2500 Linear. I use an Icom 756PROII as the main rig. I discovered a problem the Dentron MLA2500 amp. On 3.5MHz my 756proii won't auto tune to the input of the amp, therefore sh; /archives//html/Amps/2005-10/msg00565.html (7,471 bytes)
16. Re: [Amps] Dentron MLA2500 (score: 1): Author: "rees.a@btconnect.com" <rees.a@btconnect.com>; Date: Tue, 25 Oct 2005 01:51:27 -0400; Hi all Thanks to everyone who replied. The amp is delivering 900-1.2Kw on all bands 160-10, except for 80M. Tuning on 80M with low drive (to avoid the auto ATU) gets me about 250W before the Auto ATU; /archives//html/Amps/2005-10/msg00568.html (10,162 bytes)
17. Re: [Amps] Dentron MLA2500 (score: 1): Author: "rees.a@btconnect.com" <rees.a@btconnect.com>; Date: Tue, 25 Oct 2005 17:46:27 -0400; Thanks to all who replied to my original post. The plot as they say has thickened! I got my other Dentron ML2500 B out tonight, and everything works FB. Loads up on all bands. Now here's the twist !; /archives//html/Amps/2005-10/msg00580.html (13,242 bytes)
18. Re: [Amps] off topic -- books recommended (score: 1): Author: "ADRIAN REES" <rees.a@btconnect.com>; Date: Thu, 9 Mar 2006 15:24:56 -0000; I would suggest ON4UN's low band DX'ing, or the ARRL Antenna Handbook. The Experimental Methods in RF Design will just create more projects! The RSGB Handbook is not significantly different to previo; /archives//html/Amps/2006-03/msg00226.html (8,806 bytes)
19. [Amps] Dentron ML2500 and 3.5MHz (score: 1): Author: "ADRIAN REES" <rees.a@btconnect.com>; Date: Tue, 11 Apr 2006 15:21:05 +0100; Hi all I have two Dentron ML2500 Linears (pair of 8875's). The rig is an ICOM 756PROII. When using one of the linears on 3.5MHz the ICOM will NOT tune into the Linear. (The Dentrons don't have any in; /archives//html/Amps/2006-04/msg00174.html (7,535 bytes)
20. [Amps] Marconi / Racal (score: 1): Author: "ADRIAN REES" <rees.a@btconnect.com>; Date: Wed, 7 Jun 2006 13:23:41 +0100; Hi all; I have the opportunity to purchase some used Marconi / Racal Amps. All I know so far is that they are: HF (below 30MHz) Manufactured between 1965 and 1995. Are rack mounted, (varying in heigh; /archives//html/Amps/2006-06/msg00192.html (7,060 bytes)

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