Mail Archive Search: <+from:amps@txrx.demon.co.uk>

Results:

References: [ +from:amps@txrx.demon.co.uk: 190 ]

Total 190 documents matching your query.

21. [AMPS] Hold on - SWR meter placement (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Sat, 9 Oct 1999 09:05:35 +0100; --Original Message-- From: measures <measures@vcnet.com> To: Gilmer, Mike <mgilmer@gnlp.com>; 'AMPS' <amps@contesting.com> To: <amps@contesting.com> Date: 08 October 1999 23:41 Subject: RE: [AMPS] Ho; /archives//html/Amps/1999-10/msg00323.html (10,120 bytes)
22. [AMPS] Hold on - SWR meter placement (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Sun, 10 Oct 1999 22:01:50 +0100; "varied all termination. The section and the the swr was have a matched is inserted. matters. If you used a SWR meter set up to work with Zo of 93ohms, the reading would not change with position. If; /archives//html/Amps/1999-10/msg00352.html (9,491 bytes)
23. [AMPS] Hold on - SWR meter placement (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 13 Oct 1999 07:40:12 +0100; To: <amps@contesting.com> meter one of the 50 meter were section? No, it would read 1.86:1, the same as it would read anywhere along the 93 ohm coax. I'm sorry, but I can't continue this discussion a; /archives//html/Amps/1999-10/msg00422.html (9,973 bytes)
24. [AMPS] RF Chokes (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Sat, 23 Oct 1999 08:49:47 +0100; I'm looking for suggestions of winding info., or parts I can buy for a choke to use across a 50 ohm line at 3kW, 1.5-30MHz. It needs to handle 1A dc at the same time. I guess that the continuity chok; /archives//html/Amps/1999-10/msg00591.html (6,969 bytes)
25. [AMPS] RF Chokes (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Sun, 24 Oct 1999 07:45:25 +0100; --Original Message-- From: measures <measures@vcnet.com> To: Steve Thompson <amps@txrx.demon.co.uk>; AMPS <amps@contesting.com> To: <amps@contesting.com> Date: 23 October 1999 13:13 Subject: Re: [AMP; /archives//html/Amps/1999-10/msg00605.html (7,301 bytes)
26. [AMPS] QSK1500 (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 26 Oct 1999 08:36:34 +0100; I'd like to buy one of these, dead or alive. Steve -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems; /archives//html/Amps/1999-10/msg00637.html (6,431 bytes)
27. [AMPS] FT990 ALC problem? (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 8 Sep 1999 09:47:03 +0100; I don't want to clog up the reflector with off topic, but I have a problem with spikes streching +/- 20kHz when using SSB. I'd be grateful if anyone with experience of the rig would contact me direct; /archives//html/Amps/1999-09/msg00038.html (6,647 bytes)
28. [AMPS] PIN switches (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 30 Sep 1999 20:19:57 +0100; For a commercial job I need some PIN switches to cover 1.5-30MHz (preferably 40MHz if possible), power is 1.3kW with VSWR up to 3:1 I'd be grateful for pointers to ready made products, designs and/or; /archives//html/Amps/1999-09/msg00345.html (6,810 bytes)
29. [AMPS] 8877 bad date codes (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 2 Aug 1999 07:01:47 +0100; How do problems with these tubes show up when you use them? Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contestin; /archives//html/Amps/1999-08/msg00016.html (7,135 bytes)
30. [AMPS] Input pi-net (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 2 Aug 1999 07:54:52 +0100; Here's an idea to try. Add an external tuner to the input of the amplifier (leaving the input pi network in place). Run up the amplifier to the required operating conditions and use the external tune; /archives//html/Amps/1999-08/msg00018.html (9,420 bytes)
31. [AMPS] 8877 bad date codes (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 3 Aug 1999 07:27:56 +0100; Thanks for the comments, guys. If tubes survive the few 100s hours, are they then ok, or still prone to fail? In other words, if I have a pull from working equipment with a bad date code on it, is it; /archives//html/Amps/1999-08/msg00058.html (7,300 bytes)
32. [AMPS] 8877 bad date codes (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 3 Aug 1999 07:30:12 +0100; Thanks for the comments, guys. If tubes survive the few 100s hours or 100s heater cycles, are they then ok, or still prone to fail? In other words, if I have a pull from working equipment with a bad; /archives//html/Amps/1999-08/msg00059.html (7,326 bytes)
33. [AMPS] Pi-Net math (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Fri, 6 Aug 1999 22:47:17 +0100; --Original Message-- From: Richard W. Ehrhorn <w4eto@rmi.net> To: 'measures@vc.net' <measures@vc.net>; amps@contesting.com <amps@contesting.com> To: <amps@contesting.com> Date: 06 August 1999 19:57 S; /archives//html/Amps/1999-08/msg00143.html (9,707 bytes)
34. [AMPS] sb-200 troubles (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 11 Aug 1999 07:43:38 +0100; twice(could If you have kept the original, check it's not resonant at 50MHz. assembled, chassis should Duff bleeder resistors in the capacitor stack? Steve -- FAQ on WWW: http://www.contesting.com/am; /archives//html/Amps/1999-08/msg00191.html (7,393 bytes)
35. [AMPS] Pi-Net math (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 11 Aug 1999 07:41:16 +0100; Dick ? I did the homework, Dick. I built the Pi-network test model. I used Ian's calculated values for: 2000-ohms RL / Ro=50-ohms / 7.00MHz / Q=10 or so. - Ian's results: "The accurate formula - in A; /archives//html/Amps/1999-08/msg00192.html (10,029 bytes)
36. [AMPS] Pi-Net math (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 11 Aug 1999 09:19:11 +0100; --Original Message-- From: Peter Chadwick <Peter_Chadwick@mitel.com> To: Steve Thompson <amps@txrx.demon.co.uk>; amps@contesting.com <amps@contesting.com>; 'Rich Measures' <measures@vcnet.com> To: <a; /archives//html/Amps/1999-08/msg00195.html (10,235 bytes)
37. [AMPS] Pi-Net math (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 11 Aug 1999 10:02:36 +0100; Sorry - for some reason my Outlook Express does not add attribution marks to some messages. circuit However, the tube is a time-varying resistance. In which case one or more of resonance, impedance a; /archives//html/Amps/1999-08/msg00196.html (10,013 bytes)
38. [AMPS] TL922 (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 26 Aug 1999 07:19:00 +0100; excellent condition graduated dial Krazy glue metal dials panel which I acetone, varsol, glue/epoxy and load Some types of glue go very brittle after a spell in the freezer, and can be chipped off. H; /archives//html/Amps/1999-08/msg00311.html (7,583 bytes)
39. [AMPS] RJ1A relays (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 1 Jul 1999 09:21:49 +0100; ? Fair Radio Sells virtually unused RJ-1A relays for $35. Single lot new ones cost around 4x as much. However, if the NO contact BV is under 3500v, the ceramic/metal seals are leaking. Rich... Does l; /archives//html/Amps/1999-07/msg00001.html (6,872 bytes)
40. [AMPS] PS diode equalizing (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 5 Jul 1999 18:23:24 +0100; --Original Message-- From: Vic Rosenthal <rakefet@rakefet.com> To: Peter Chadwick <Peter_Chadwick@mitel.com>; amps@contesting.com <amps@contesting.com> To: <amps@contesting.com> Date: 05 July 1999 15; /archives//html/Amps/1999-07/msg00064.html (10,471 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]