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References: [ +from:RMcGraw@InfoAve.Net: 46 ]

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1. [AMPS] Nichrome wire and tube chimneys! (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 14 May 2001 08:06:50 -0700; Just an observation, the design of a chimney is such that the vertical flow of air is directed evenly around the tube envelope and as it exits, also against the anode seal & heat sink at the top. I r; /archives//html/Amps/2001-05/msg00252.html (11,588 bytes)
2. [AMPS] hi volume air for finals (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 14 May 2001 21:45:09 -0700; My experience with bilge blowers are that they generate lots of nasty RF noise. An AC powered job with sleeve bearings will be a lot quieter....electrically and acoustically. Bob K4TAX -- FAQ on WWW:; /archives//html/Amps/2001-05/msg00281.html (7,585 bytes)
3. [AMPS] Nichrome wire and tube chimneys! (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 14 May 2001 21:38:34 -0700; One purpose of the chimney is to move the air upward and then rotate the direction of flow to near horizontal as done by the upper curve of the chimney thus directing the airflow toward the anode con; /archives//html/Amps/2001-05/msg00282.html (11,962 bytes)
4. [AMPS] [Fwd: [TenTec] Kachina discontinued] (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Wed, 16 May 2001 21:15:52 -0700; This is a multi-part message in MIME format. --7952574719FA Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Just and F Y I Bob --7952574719FA Content-Type: message/rfc822 C; /archives//html/Amps/2001-05/msg00321.html (10,932 bytes)
5. [AMPS] [Fwd: [SEVHF] WTB: AM6155 Amplifier, Stock or Modified] (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Wed, 16 May 2001 21:04:54 -0700; This is a multi-part message in MIME format. --79272FB57F1 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit If anyone can help out a friend, please reply direct to him. Than; /archives//html/Amps/2001-05/msg00322.html (9,075 bytes)
6. [AMPS] Lightning Safety (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Thu, 17 May 2001 14:54:21 -0700; With spring here soon to be summer and the peak of thunderstorm season here in the USA, here's a link that may help save a few radios and etc. 73 Bob K4TAX http://www.lightningsafety.com/nlsi_lhm.htm; /archives//html/Amps/2001-05/msg00339.html (6,568 bytes)
7. [AMPS] Needed 7525A's (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Thu, 05 Apr 2001 13:47:55 -0700; I need some 7525A's for my 160M transmitter. Yep, it's AM using a pair of 7525A's in class C for the PA, modulated by a pair of 7525A's in P-P AB1. Any suggestions? 73 Bob K4TAX -- FAQ on WWW: http:/; /archives//html/Amps/2001-04/msg00116.html (6,600 bytes)
8. [AMPS] safety check list (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Thu, 05 Apr 2001 21:06:57 -0700; Nah..... From an old broadcast engineer, Phil just knows what safety is all about. My stick is almost the same thing and design. 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submiss; /archives//html/Amps/2001-04/msg00124.html (8,965 bytes)
9. [AMPS] Eimac cross reference (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 08 Apr 2001 19:58:57 -0700; Ron: I'm looking for a 7527A as a spare or two for the AM rig. I've gotten a retired AM broadcast transmitter which I intend to put on 160M AM. I too would appreciate some info. 73 Bob K4TAX -- FAQ o; /archives//html/Amps/2001-04/msg00186.html (7,445 bytes)
10. [AMPS] 3 phase transforers and single phase (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 22 Apr 2001 15:15:42 -0700; Here's a thought. Use a 2nd single phase motor to turn the 3 phase motor. Excite only 1 phase of the 3 phase motor. Then you'll have 3 phases 120 degrees apart. 73 Bob K4TAX -- FAQ on WWW: http://www; /archives//html/Amps/2001-04/msg00474.html (11,313 bytes)
11. [AMPS] source of large inductors (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sun, 22 Apr 2001 20:04:00 -0700; Hello all: For a source of "LARGE" components, I just picked up a 1KW AM broadcast transmitter ....... for free!! Yep, as most stations are going solid state with digital modulated transmitters the o; /archives//html/Amps/2001-04/msg00480.html (8,881 bytes)
12. [AMPS] 4CX350A (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 24 Apr 2001 06:51:01 -0700; George: There is a fine article in THE VHF/UHF DX BOOK publlished by RGSB which details a pair of 4CX250B's used in parallel for 432 MHz. This amplifier is known as the K2RIW power amp. The 4CX300A's; /archives//html/Amps/2001-04/msg00512.html (10,028 bytes)
13. [AMPS] Buffer/Driver Stage for 4-1000 Amp (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 27 Apr 2001 06:30:35 -0700; I agree, a single 4-1000A with 4 to 6 KV on the anode and a broad-band input circuit will drive very nicely with 75 to 100 watts. A driver will be a lot of trouble and produce the likely hood of poor; /archives//html/Amps/2001-04/msg00545.html (11,270 bytes)
14. [AMPS] Xray levels (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 05 Mar 2001 11:08:31 -0800; Here's a fellow that has his act together. Great writing. Thanks for sharing it with us. 73 Bob K4TAX -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative; /archives//html/Amps/2001-03/msg00044.html (10,669 bytes)
15. [AMPS] stupid question (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 16 Mar 2001 15:05:55 -0800; Folks, I have a slightly different spin on this RCA, phono, phone, and Motorola plug story. The RCA plug is generically called a phono plug today. Yep RCA did put it on the 45 RPM changers and their; /archives//html/Amps/2001-03/msg00149.html (11,793 bytes)
16. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Fri, 02 Feb 2001 12:58:10 -0800; One popular HF amp today (I own one) is designed so that when one flips the power switch the fil, fan and HV all come on. There is no CW/SSB switch as on some of the older amps. i.e. SB-220 and Drake; /archives//html/Amps/2001-02/msg00070.html (11,042 bytes)
17. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Sat, 03 Feb 2001 16:50:25 -0800; Art: Thanks for the info and the references. Interestingly enough of the 8 or so responses I've received, there seems to be a wide variance, according to the respondees, as to what EIMAC specs as the; /archives//html/Amps/2001-02/msg00092.html (10,294 bytes)
18. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Mon, 05 Feb 2001 11:24:57 -0800; If I paid that much for an automobile I'd have to drive it 15 years too. Instead, I pay 1/3 that much and drive it 5 years. So, as I see it, I end up with a new car, with all the newest style and lat; /archives//html/Amps/2001-02/msg00121.html (11,195 bytes)
19. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 06 Feb 2001 10:29:39 -0800; In general: Once upon a time in my life, professionally, it was my job as part of a team to review engineering models & prototypes for the ability to be manufactured and used reliably by the end user; /archives//html/Amps/2001-02/msg00154.html (12,518 bytes)
20. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: RMcGraw@InfoAve.Net (Bob & Linda McGraw K4TAX); Date: Tue, 06 Feb 2001 10:37:14 -0800; I agree with Tom on this. Bigger is not better in the case of filament transformer ratings. If the tube requires 10V at 10A then a transformer rated at 10V at 10A CCS, properly cooled, is acceptable.; /archives//html/Amps/2001-02/msg00155.html (11,273 bytes)

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