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Total 101 documents matching your query.

1. [Amps] Switch Help Needed (score: 1)
Author: (dan hearn)
Date: Thu, 02 Jan 2003 11:23:12 -0800
Hi Phil: Have you looked into the ultrasonic gadgets used in construction for measuring distance in rooms, etc. A system of that type would give an idea of actual water level in the tank and could be
/archives//html/Amps/2003-01/msg00012.html (8,147 bytes)

2. [Amps] FT-1000D Band Data Jack (score: 1)
Author: (dan hearn)
Date: Tue, 24 Dec 2002 16:54:52 -0800
Try this location 73, Dan, N5AR
/archives//html/Amps/2002-12/msg00283.html (7,186 bytes)

3. [Amps] Transco switches (score: 1)
Author: (dan hearn)
Date: Sun, 17 Nov 2002 14:07:49 -0800
I would appreciate any help in finding the HF power rating of 2 Transco switches. 1. PN 11880,sn 255 SPDT 115vac. Also has number 85152 on it. It is a latching job with a coil for closing and another
/archives//html/Amps/2002-11/msg00296.html (6,632 bytes)

4. [Amps] Hi-Q RF Coils (score: 1)
Author: (dan hearn)
Date: Thu, 28 Nov 2002 18:43:22 -0800
I pulled my old copy of Terman's Radio Engineers Handbook to see if my memory was correct and he had a comparison such as you need. He shows 8 charts of Q for various coils on p 75. For 4mhz he shows
/archives//html/Amps/2002-11/msg00394.html (8,931 bytes)

5. [Amps] TL922A (score: 1)
Author: (dan hearn)
Date: Mon, 07 Oct 2002 15:26:42 -0700
I have just acquired a TL922A amp in mint condition although it is about 15 yrs old. It works great 160-15m. It has never been modified to work 10m. Can someone tell me what is needed to modify it fo
/archives//html/Amps/2002-10/msg00059.html (6,271 bytes)

6. [Amps] L4B Problem (score: 1)
Author: (dan hearn)
Date: Wed, 04 Sep 2002 17:42:21 -0700
A friend has a problem with his L4B. It works fine on all bands but 20m. When he goes to 20m and puts it in transmit mode, the moment he hits the key, the FT1 exciter shuts down. Presumably due to hi
/archives//html/Amps/2002-09/msg00037.html (7,123 bytes)

7. [Amps] ALPHA 77 (score: 1)
Author: (dan hearn)
Date: Sat, 03 Aug 2002 04:59:30 -0700
Hi Bob: I do not have a specific idea about where your problem lies but thought you, or others, might be interested in my experience in fixing a 77DX which was inop when I got it. 1. The chain drive
/archives//html/Amps/2002-08/msg00050.html (10,861 bytes)

8. [Amps] PiL Current ratings? (score: 1)
Author: (dan hearn)
Date: Sun, 14 Jul 2002 16:14:44 -0700
I believe the current would be considerably less. It is in series with the coax center conductor and the current is whatever you would see for a 50 ohm load taking the power your amp puts out. 73. Da
/archives//html/Amps/2002-07/msg00201.html (7,442 bytes)

9. [Amps] Bias Zener Diodes In Parallel ? (score: 1)
Author: (dan hearn)
Date: Mon, 15 Jul 2002 21:02:04 -0700
Unfortunately the branch which has the lower total zener voltage will take most of the current so that is not a good idea. Fortunately, there is a good simple solution to your problem. A power transi
/archives//html/Amps/2002-07/msg00221.html (8,844 bytes)

10. [Amps] Muffin Fans and hot exhaust (score: 1)
Author: (dan hearn)
Date: Mon, 22 Jul 2002 00:17:40 -0700
It has been many years since I had a college course in AC machinery but I believe there is enough information in the dark recesses of my memory to give an explanation of what is happening here. If th
/archives//html/Amps/2002-07/msg00403.html (11,318 bytes)

11. [Amps] choke resonances (score: 1)
Author: (dan hearn)
Date: Fri, 28 Jun 2002 16:44:23 -0700
I saw an article one time where a guy moved a RFC resonance in a pre warc Alpha by making a single shorted turn of insulated wire on the coil form.It was slid along the form until the resonance was i
/archives//html/Amps/2002-06/msg00268.html (8,235 bytes)

12. [Amps] SB 220/221 Input cap specs. (score: 1)
Author: (dan hearn)
Date: Mon, 13 May 2002 12:50:06 -0700
Neither polyester nor most disc ceramics are suitable for RF tuned circuits. Micas or doorknob ceramics with low temp coefficients are suitable. You can series a couple of postage stamp micas to incr
/archives//html/Amps/2002-05/msg00178.html (7,880 bytes)

13. [Amps] Yaesu 2000 amplifier (score: 1)
Author: (dan hearn)
Date: Wed, 29 May 2002 08:09:21 -0700
The B.A.M.A. web site has schematics for FL2000B as well as many other radios. 73, Dan, N5AR
/archives//html/Amps/2002-05/msg00456.html (7,648 bytes)

14. [Amps] Yaesu 2000 amplifier (score: 1)
Author: (dan hearn)
Date: Wed, 29 May 2002 16:17:54 -0700
Darned if I know what your problem is. I click on the URL in my posting and it takes me there. Maybe some computer jock can explain it. 73, Dan, N5AR
/archives//html/Amps/2002-05/msg00463.html (8,561 bytes)

15. [Amps] re:(amps 10 meters) (score: 1)
Author: (dan hearn)
Date: Thu, 14 Mar 2002 07:35:08 -0800
? Yea, verily, Tom. Such feculence is a common plague on CB as well. A work-around is to increase the DC supply V to the radio *And* turn up the ALC/ P-limit adj to increase current. This procedure k
/archives//html/Amps/2002-03/msg00307.html (7,893 bytes)

16. [AMPS] Dentron gla1000 (score: 1)
Author: (dan hearn)
Date: Fri, 15 Feb 2002 21:21:25 -0800
The B.A.M.A. web page has schematics for these rigs. 73, Dan, N5AR -- FAQ on WWW: Submissions: Administrative re
/archives//html/Amps/2002-02/msg00159.html (7,425 bytes)

17. [AMPS] Rotary Inductors in Amps (score: 1)
Author: (dan hearn)
Date: Wed, 12 Dec 2001 13:34:47 -0800
Bill: You do not seem to be getting an answer to the specific question you asked. 1. The insulating material in the coil form should be capable of withstanding high temperatures. The same applies to
/archives//html/Amps/2001-12/msg00213.html (9,560 bytes)

18. [AMPS] SB200 Filament Voltage (score: 1)
Author: (dan hearn)
Date: Wed, 07 Nov 2001 07:07:28 -0800
When I lived in Dallas, I purchased various sizes of low value power resistors from Tanner Electronics. These were for setting filament voltages to the correct value. They are a large surplus part ou
/archives//html/Amps/2001-11/msg00127.html (8,666 bytes)

19. [AMPS] SB200 Filament Voltage (score: 1)
Author: (dan hearn)
Date: Wed, 07 Nov 2001 07:28:45 -0800
-- FAQ on WWW: Submissions: Administrative requests: Problems:
/archives//html/Amps/2001-11/msg00128.html (9,625 bytes)

20. [AMPS] Eimac Mechanical Sample (score: 1)
Author: (dan hearn)
Date: Fri, 19 Oct 2001 07:54:00 -0700
Hi Richard: I lived in Dallas until 3 years ago. A number of years back there was a guy there who built and sold a number of linears using 8877 tubes, All of the tubes were marked Mechanical Sample.
/archives//html/Amps/2001-10/msg00397.html (8,645 bytes)

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