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Total 53 documents matching your query.

1. [Amps] Acom 2000A (score: 1)
Author: (Cleeve)
Date: Thu, 05 Dec 2002 01:15:48 +0000
I have just been reading the brochure about the Acom 2000A. I would be very interested to hear the operational results of owners. Does it live up to the brochure claims, is it reliable, are there any
/archives//html/Amps/2002-12/msg00078.html (6,318 bytes)

2. [Amps] Acom 2000A + Alpha (score: 1)
Author: (Cleeve)
Date: Thu, 05 Dec 2002 20:56:55 +0000
I would like to thank all those who gave me advice and comments on the Acom 2000A, from the response, the manufacturers should be very happy...I will continue drooling, and drop some very pointed hin
/archives//html/Amps/2002-12/msg00091.html (6,591 bytes)

3. [Amps] Ceramic coil formers etc. (score: 1)
Author: (Cleeve)
Date: Thu, 25 Jul 2002 10:47:57 +0000
Good morning, From time to time, I have noted requests for sources of ceramic coil, or choke forms......I would draw your attention to an article in the RSGB magazine "Radcom" for August 2002, pages
/archives//html/Amps/2002-07/msg00474.html (7,277 bytes)

4. [Amps] Ceramic coil formers etc. (score: 1)
Author: (Cleeve)
Date: Thu, 25 Jul 2002 22:27:37 +0000
Hello Ian, I agree with the comments on the relative performance of an unknown ceramic mix at micro wave, but, up to 30 Mhz, I would have thought, would be ok, however, one has to give the man full m
/archives//html/Amps/2002-07/msg00487.html (7,630 bytes)

5. [Towertalk] Yagi antenna interaction. Conclusion. (score: 1)
Author: Cleeve <>
Date: Tue, 14 May 2002 16:09:16 +0000
Good afternoon gentlemen, I would like to thank everyone that responded to my question, some via the amp, or towertalk route, others by direct e-mail. I found the information, and description of the
/archives//html/Amps/2002-05/msg00000.html (7,643 bytes)

6. [Amps] Interaction, antennas. (score: 1)
Author: (Cleeve)
Date: Sun, 12 May 2002 11:14:47 +0000
Good morning gentlemen, forgive the off topic, however, our amplifiers feed antennas, so the topic is related. I am seeking some guidance on the practical vertical distance required between two yagis
/archives//html/Amps/2002-05/msg00134.html (7,003 bytes)

7. [Amps] Useful parts (score: 1)
Author: (Cleeve)
Date: Wed, 13 Mar 2002 23:07:13 +0000
Gentlemen, this information may be of use to home constructors....I have just replaced our domestic microwave oven, which is a 700 watt Philips Cooktronic M718, which happened to be made in Sweden, i
/archives//html/Amps/2002-03/msg00282.html (7,612 bytes)

8. [Amps] Useful parts (score: 1)
Author: (Cleeve)
Date: Thu, 14 Mar 2002 12:51:22 +0000
Hello Peter, Thank you for your warning. It sounds as though you may have inside information on the design parameters of that transformer. It does look a substantial item, with a thick core of lamina
/archives//html/Amps/2002-03/msg00290.html (7,267 bytes)

9. [Amps] Useful Parts, conclusion. (score: 1)
Author: (Cleeve)
Date: Sun, 17 Mar 2002 11:40:20 +0000
Good morning, The exchange prompted by my original posting, has been very interesting and informative. I would like to thank everyone for their notes, either direct, or posted. In particular to Traia
/archives//html/Amps/2002-03/msg00381.html (7,424 bytes)

10. [Amps] error (score: 1)
Author: (Cleeve)
Date: Sun, 17 Mar 2002 11:48:44 +0000
Sorry, finger trouble... VA3UX Website is 73 de John.
/archives//html/Amps/2002-03/msg00382.html (6,176 bytes)

11. [AMPS] Porcelain standoffs (score: 1)
Author: (Cleeve)
Date: Thu, 31 Jan 2002 19:28:57 +0000
I think that if the insulators have been stored in a wet or damp environment for a number of years, then the glaze may also have hair line cracks, my solution would be to place the insulatores in a m
/archives//html/Amps/2002-01/msg00388.html (8,011 bytes)

12. [AMPS] Coil forms etc. (score: 1)
Author: (Cleeve)
Date: Wed, 14 Nov 2001 01:46:27 +0000
If you cannot find a source of ceramic tube, then another possibility is to make use of Pyrex glass tube, available from scientific glass suppliers, this tube is available in many diameters, out to a
/archives//html/Amps/2001-11/msg00237.html (7,078 bytes)

13. [AMPS] Big Bangs (score: 1)
Author: (Cleeve)
Date: Mon, 09 Jul 2001 11:00:25 +0100
Good morning gentlemen, The problem suffered by Art, with his power supply, raises a question from me, which is this, what is the nominal shelf life for unused electrolytic capacitors, also what chec
/archives//html/Amps/2001-07/msg00114.html (7,041 bytes)

14. [AMPS] Big Bangs (score: 1)
Author: (Cleeve)
Date: Tue, 10 Jul 2001 00:55:07 +0100
Thanks for the helpful information. The capacitors I have, are a batch of 16 I bought from the Sprague distributor in the UK, Axiom, back in 1988, They are Powerlytic type 36D, 330uf at 450vdc, they
/archives//html/Amps/2001-07/msg00122.html (7,197 bytes)

15. [AMPS] Filament protection. (score: 1)
Author: (Cleeve)
Date: Fri, 22 Jun 2001 01:02:21 +0100
I have been reading the comments on filament voltage with interest. Would it be considered good practice to put a small variac in the primary circuit of the filament transformer, supplying a transmit
/archives//html/Amps/2001-06/msg00243.html (6,947 bytes)

16. [Amps] RCA ET4336 (score: 1)
Author: Cleeve <>
Date: Sun, 29 Aug 2004 11:19:36 +0000
I have recently aquired one of these rugged units, in perfect working order, complete with all the documentation, also, the Wilcox Gay VFO and xtal modules, and the RCA speech amplifier. The original
/archives//html/Amps/2004-08/msg00445.html (7,047 bytes)

17. [Amps] Amperex 3-500G (France) (score: 1)
Author: John E.Cleeve <>
Date: Tue, 04 Oct 2005 13:29:05 +0100
Gentlemen, I am seeking advice. I have a problem with a pair of Amperex 3-500G valves, manufactured in France. The problem is that the wire from one side of the filament, through the glass envelope a
/archives//html/Amps/2005-10/msg00108.html (7,931 bytes)

18. [Amps] Amperex 3-500G (score: 1)
Author: John E.Cleeve <>
Date: Tue, 04 Oct 2005 15:01:20 +0100
Good afternoon gentlemen, Thank you for the response to my plight. I did check the tube socket bases for signs of heat dissipation, changes of plating colour etc. but the only signs of any stress is
/archives//html/Amps/2005-10/msg00110.html (6,909 bytes)

19. [Amps] 3-500 Amperex tubes (score: 1)
Author: John E.Cleeve <>
Date: Wed, 05 Oct 2005 01:02:20 +0100
I would thank everyone who responded to my plea for help. The advice given is very much appreciated, and I hope that following repairs to the effected tube pins, and the implimentation of directed co
/archives//html/Amps/2005-10/msg00119.html (6,551 bytes)

20. [Amps] 3-500 / 4-400 cooling. (score: 1)
Author: John E.Cleeve <>
Date: Sun, 09 Oct 2005 13:06:10 +0100
Good afternoon gentlemen, I would like to re-open the discussion on the effective cooling of the pins on valves like the 3-500 and 4-400 series. Looking back through my old Eimac handbook, and ARRL h
/archives//html/Amps/2005-10/msg00198.html (10,724 bytes)

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