Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+AL\-1200\s+Blower\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+AL\-1200\s+Blower\s*$/: 17 ]

Total 17 documents matching your query.

1. [AMPS] AL-1200 Blower (score: 1): Author: Hans_Brakob@adc.com (Brakob, Hans); Date: Wed, 6 Dec 2000 09:48:45 -0600; Just installed a new AL-1200 yesterday. The blower is kinda loud, like sitting in the back row of a DC-9 with full reverse thrusters. I notice the blower has wiring options for 4 speeds (it comes wir; /archives//html/Amps/2000-12/msg00092.html (7,958 bytes)
2. [AMPS] AL-1200 Blower (score: 1): Author: w7ti@jps.net (Bill Turner); Date: Wed, 06 Dec 2000 08:37:46 -0800; _____________________________________________________________________ I can only offer some advice if you're planning on using the AL-1200 for RTTY. I had one several years ago and smoked the 80/160; /archives//html/Amps/2000-12/msg00093.html (8,869 bytes)
3. [AMPS] AL-1200 Blower (score: 1): Author: 2@vc.net (measures); Date: Wed, 6 Dec 2000 09:32:44 -0800; As I understand it, the AL-1200 needs: an addional cooling fan directed at the bandswitch. additional HV bypass (1000pF @ 1.8MHz is not enough) a glitch R. remove the "neutralization" circuit. Over; /archives//html/Amps/2000-12/msg00094.html (8,745 bytes)
4. [AMPS] AL-1200 Blower (score: 1): Author: 2@vc.net (measures); Date: Wed, 6 Dec 2000 10:14:25 -0800; Incredible end - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contestin; /archives//html/Amps/2000-12/msg00095.html (9,024 bytes)
5. [AMPS] AL-1200 Blower (score: 1): Author: Hans_Brakob@adc.com (Brakob, Hans); Date: Wed, 6 Dec 2000 12:19:48 -0600; The exhaust is vented just like most other amps, via grille-work directly above the tube chimney. The cooling seems perfectly adequate (I run mostly CW), but would be nice to be able to quiet that fa; /archives//html/Amps/2000-12/msg00096.html (9,903 bytes)
6. [AMPS] AL-1200 Blower (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Wed, 06 Dec 2000 11:01:25 -0800; With a solid-state amp, it's easy to mount a thermostat on the heatsink. With tubes, it's more complicated...how about a thermostat clamped to the tube anode cooler? Isolation from the HV would be in; /archives//html/Amps/2000-12/msg00097.html (8,940 bytes)
7. [AMPS] AL-1200 Blower (score: 1): Author: ve3zi@hotmail.com (Roger P); Date: Wed, 06 Dec 2000 20:08:00; In my h/b amplifier I use ex military DOD-006 tubes .... These have a thermostatic switch mounted at the tube base and are wired to shut things down if the base exceeds (if I remember correctly) 150C; /archives//html/Amps/2000-12/msg00098.html (10,570 bytes)
8. [AMPS] AL-1200 Blower (score: 1): Author: paulc@mediaone.net (Paul Christensen); Date: Wed, 6 Dec 2000 15:13:58 -0500; Is it possible to modify the AL-1200 blower such that the blower winding is in series with the HV transformer primary winding as Alpha does with their older amps? In effect, as the R.F. output power; /archives//html/Amps/2000-12/msg00099.html (10,336 bytes)
9. [AMPS] AL-1200 Blower (score: 1): Author: 2@vc.net (measures); Date: Wed, 6 Dec 2000 12:55:28 -0800; the bandswitch needs cooling. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-RE; /archives//html/Amps/2000-12/msg00100.html (9,469 bytes)
10. [AMPS] AL-1200 Blower (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 6 Dec 2000 16:04:46 -0500; The AL1200, because of complaints like yours, had the blower speed reduced about 12 years ago. If you want to use the amp really HD, you need to speed the blower up a bit. That blower cost over $100; /archives//html/Amps/2000-12/msg00101.html (10,778 bytes)
11. [AMPS] AL-1200 Blower (score: 1): Author: w7ti@jps.net (Bill Turner); Date: Wed, 06 Dec 2000 16:27:23 -0800; _____________________________________________________________________ I wonder if an infrared detector diode mounted to "look" directly at the anode might be better. Just a thought, haven't experimen; /archives//html/Amps/2000-12/msg00103.html (8,442 bytes)
12. [AMPS] AL-1200 Blower (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Wed, 6 Dec 2000 18:48:59 -0600; OR....... 1. Buy a pair of aircraft type headphones that reduce ambient noise by many DB. 2. Build the amp into the wall, or build a box around the amp and vent it to another room/outside with a big; /archives//html/Amps/2000-12/msg00104.html (9,274 bytes)
13. [AMPS] AL-1200 Blower (score: 1): Author: sm5ki@algonet.se (Hans Goldschmidt); Date: Thu, 07 Dec 2000 12:35:09 +0000; 0-12-07 00.27, skrev Bill Turner på w7ti@jps.net följande: The K2RIW methode is better. In his by now famous 2 meter and 75cm paralell 4CX250B amplifiers he simply measured the air exaust; /archives//html/Amps/2000-12/msg00108.html (9,329 bytes)
14. [AMPS] AL-1200 Blower (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 7 Dec 2000 13:42:44 -0000; A number of Marconi tx's for military and naval applications did that for detecting excess plate dissipation back in the late 1950's, for tx's with 4-125 and 4-250. The photocell and a 12AU7 schmitt; /archives//html/Amps/2000-12/msg00110.html (8,664 bytes)
15. [AMPS] AL-1200 Blower (score: 1): Author: Hans_Brakob@adc.com (Brakob, Hans); Date: Thu, 7 Dec 2000 08:20:49 -0600; I don't want to shut off the tube, but rather pop the blower speed up (or down) a notch. 73, Hans, K0HB The K2RIW methode is better. In his by now famous 2 meter and 75cm paralell 4CX250B amplifiers; /archives//html/Amps/2000-12/msg00111.html (8,348 bytes)
16. [AMPS] AL-1200 Blower (score: 1): Author: w7ti@jps.net (Bill Turner); Date: Thu, 07 Dec 2000 11:40:27 -0800; _____________________________________________________________________ Murphy does well enough without assistance... but he always seems to find some. :-) 73, Bill W7TI -- FAQ on WWW: http://www.conte; /archives//html/Amps/2000-12/msg00121.html (8,056 bytes)
17. [AMPS] AL-1200 Blower (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Fri, 8 Dec 2000 08:10:48 -0000; How very true. However, trips that are a plain nuisance lead to them being defeated.......and if you're in the military, I expect it's more important to keep the tx on the air than to maximise tube l; /archives//html/Amps/2000-12/msg00125.html (7,956 bytes)

Current List: 1 - 17
Page: [1]