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Total 834 documents matching your query.

1. Re: [Amps] Drill bits (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Mon, 30 Oct 2006 22:46:24 -0500
Another thing is to use a center drill to start the hole for the small bit. This is the same center drill you use in a lathe or on a mill. It has a 60 degree angle. Some steel has a case hardening, o
/archives//html/Amps/2006-10/msg00318.html (10,285 bytes)

2. Re: [Amps] Amplifier Rule Changes in the new R&O (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sun, 15 Oct 2006 13:30:42 -0400
Lou, I'm not really sure. I've watched some on ebay go for pretty big bucks though. They sometimes add another tube in the SB-220 and use an outboard power supply. Evidently, they cut out the divider
/archives//html/Amps/2006-10/msg00143.html (9,571 bytes)

3. Re: [Amps] Amplifier Rule Changes in the new R&O (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sun, 15 Oct 2006 13:08:29 -0400
Mike, If they potted the microprocessor, all you'd need to do is either cut or short out the control element it drives. In other words, if it opened a circuit via a relay, short the relay so it's alw
/archives//html/Amps/2006-10/msg00139.html (11,390 bytes)

4. Re: [Amps] New FCC Amplifier Rule (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 12 Oct 2006 16:13:37 -0400
Pete, It's untelling how hard they will try to enforce this. Even though the FCC has made several large busts in the past I know about, stuff is still coming into the US like illegal amps and transce
/archives//html/Amps/2006-10/msg00099.html (14,894 bytes)

5. Re: [Amps] 8877 hipot (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 12 Oct 2006 13:40:19 -0400
One thing that could possible cause a false reading is the exterior of the tube to be dirty, especially where the ceramic to metal fits. I'd give it a good cleaning and then check it. Best, Will ** R
/archives//html/Amps/2006-10/msg00093.html (9,530 bytes)

6. Re: [Amps] "10 Meter Ban" to be lifted ... (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 12 Oct 2006 12:31:05 -0400
Bill, Correct. Those Italian RM amps use what they call an inhibit circuit. They either have a high pass or notch filter, I forget which, set at 11 Meters. The filter is connected to a RF triggered r
/archives//html/Amps/2006-10/msg00091.html (11,162 bytes)

7. Re: [Amps] Boycott New Chinese linear Amplifier (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Wed, 04 Oct 2006 19:09:48 -0700
Indeed! I'd like to hear this one myself. All I know that was removed is one. Sincerely, Will ** REPLY SEPARATOR ** _______________________________________________ Amps mailing list Amps@contesting.c
/archives//html/Amps/2006-10/msg00033.html (8,862 bytes)

8. Re: [Amps] Boycott New Chinese linear Amplifier (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Wed, 04 Oct 2006 07:35:41 -0700
Bob, I'm like you, there's a bunch of other amps that are much better candidates. Even in this case, Hsu's friend had to make modifications and corrections to make it boatworthy. However, I have lear
/archives//html/Amps/2006-10/msg00014.html (12,115 bytes)

9. Re: [Amps] Titan 425 Reflected Power (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Mon, 25 Sep 2006 03:13:14 -0400
Jim, It sounds to me like you have a meter in the amp that is reading off, if several other meters have shown a different swr after the amp, and all but the amps meter have agreed. Most all meter cir
/archives//html/Amps/2006-09/msg00304.html (12,023 bytes)

10. [Amps] Hipot and other equipment for sale (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 21 Sep 2006 20:29:51 -0400
All, I have the following four pieces of test equipment for sale; (1) Model 1020-B Megohm Meter by Freed Transformer 1 meg to 100k meg (2) Model 404M3 "Hypot" by Associated Research 4 kV @ 100w (3) M
/archives//html/Amps/2006-09/msg00276.html (7,213 bytes)

11. Re: [Amps] Step Start on a 3KA Amp (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Tue, 19 Sep 2006 19:09:15 -0400
Larry, The more components in a circuit, the odds of a failure grow expotentially. Keep it as simple as possible is the way I was taught, and I think in these days, we all sometimes over do what real
/archives//html/Amps/2006-09/msg00234.html (15,550 bytes)

12. Re: [Amps] Step Start on a 3KA Amp (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Tue, 19 Sep 2006 18:59:14 -0400
Hal and everyone, Personally, I always used a 1 second delay, but the transformer wasn't as large as the one that I think you have, if it's the one you showed me photos of. There's other factors like
/archives//html/Amps/2006-09/msg00233.html (14,001 bytes)

13. Re: [Amps] Step Start on a 3KA Amp (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Mon, 18 Sep 2006 13:03:54 -0400
Ian, The first 1 to 5 cycles is the worst part of the surge, but from tests that was run by a ham on this mailer, the transformer didn't settle down until 30 to 40 cycles. This was captured on a stor
/archives//html/Amps/2006-09/msg00217.html (9,026 bytes)

14. Re: [Amps] amp tubes (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sun, 10 Sep 2006 16:11:09 -0400
Lou, The only problem I see in using more powerful tubes is the strain on the components, especially the HV transformer. The HV transformer is designed for the output of two 572B's running at about 6
/archives//html/Amps/2006-09/msg00176.html (12,778 bytes)

15. Re: [Amps] Tektronix S-30 (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sat, 09 Sep 2006 21:46:41 -0400
All, I made a mis-word here. It should have said 1 day and 4 minutes. There's now 21 hours 47 mins left so you have time to bid if you need the standard. Best, Will ** REPLY SEPARATOR ** On 9/9/06 at
/archives//html/Amps/2006-09/msg00159.html (8,054 bytes)

16. [Amps] Tektronix S-30 (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sat, 09 Sep 2006 15:16:49 -0400
All, I know a few on here use a Tektronix LC-130 LCR meter to measure coils they wind for amps. The link below is to a standard used with the LC-130 to calibrate it (model S-30). From now, theres abo
/archives//html/Amps/2006-09/msg00156.html (7,178 bytes)

17. [Amps] Ferromagnetic Core Design & Application Handbook (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 08 Sep 2006 21:54:32 -0400
All, I ran across the book titled "Ferromagnetic Core Design & Application Handbook" by Doug DeMaw on ebay. I have this book and it is a good one about the design of RF transformers and chokes using
/archives//html/Amps/2006-09/msg00148.html (7,232 bytes)

18. Re: [Amps] SPAM (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Wed, 06 Sep 2006 17:07:52 -0400
Peter, Nope, sure haven't. Just the posts from the reflector. Best, Will ** REPLY SEPARATOR ** On 9/6/06 at 11:02 PM Peter Chadwick wrote: _______________________________________________ Amps mailing
/archives//html/Amps/2006-09/msg00130.html (7,529 bytes)

19. Re: [Amps] Parasitics & Filament Sag (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Mon, 04 Sep 2006 10:40:26 -0400
Those are the same formulae used to determine the Pi tank circuit. One also has to remember that though Rload is static, Ranode is dynamic. Best, Will _______________________________________________
/archives//html/Amps/2006-09/msg00070.html (9,770 bytes)

20. Re: [Amps] Need Japan Radio Plate Transformer Info (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 01 Sep 2006 21:29:48 -0400
I forgot to ad about the line frequency. If the frequency is higher, like it is here, and you run a 50 Hz at 60 Hz, that will help as the 50 Hz has more iron in it. It should have about 1.2 times mor
/archives//html/Amps/2006-09/msg00026.html (11,395 bytes)

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