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361. Re: [Amps] TL922 Power Plugs (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Wed, 04 Nov 2009 21:11:19 -0500
Ground Fault Interrupter? I say that only half jokingly as I'd bet that about 75% of the ham stations out there are in homes without GFIs. The average home in existence was built well before they wer
/archives//html/Amps/2009-11/msg00055.html (11,936 bytes)

362. Re: [Amps] TL922 Power Plugs (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Thu, 05 Nov 2009 14:12:03 -0500
Me either. Here, the neutral comes in from the pole with the two 110 VAC lines (220 volts between them) That neutral is grounded/earthed at both ends. In the house the neutral ties to the neutral and
/archives//html/Amps/2009-11/msg00069.html (19,162 bytes)

363. Re: [Amps] TL922 Power Plugs (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 06 Nov 2009 01:25:41 -0500
I may be missing something but: For the underground service to a 200 amp panel consumers said #6, we put in about 200' of #2, yet I had to use 3 conductor 00 Copper, or 3 conductor 000 aluminum and t
/archives//html/Amps/2009-11/msg00077.html (24,661 bytes)

364. Re: [Amps] TL922 Power Plugs (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 06 Nov 2009 01:29:16 -0500
You just need the power off for the work. I use a long handled torque wrench with about a 3/8 or 1/2" allen wrench. With Aluminum they should be tightened every few years. Don't forget to use some ne
/archives//html/Amps/2009-11/msg00078.html (28,741 bytes)

365. Re: [Amps] TL922 Power Plugs (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 06 Nov 2009 01:42:07 -0500
I didn't have to worry about that. The drop to the house is supposed to be 12' at the lowest. When the concrete trucks came in to pour the floor and foundation for my shop they took care of the probl
/archives//html/Amps/2009-11/msg00079.html (36,921 bytes)

366. Re: [Amps] Repeats (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 06 Nov 2009 14:56:28 -0500
Don't be sorry. Many reflectors add a note to all digest posts telling the poster to use a meaningful subject and not post the digest. Here, the filters at the ISP remove most "digest posts", but if
/archives//html/Amps/2009-11/msg00089.html (7,695 bytes)

367. Re: [Amps] PSU design question (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sat, 07 Nov 2009 02:41:26 -0500
Why? It's DC. Wouldn't one diode should suffice? We used two of opposite polarity in parallel with AC at work. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@
/archives//html/Amps/2009-11/msg00098.html (7,711 bytes)

368. Re: [Amps] PSU design question (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sat, 07 Nov 2009 10:02:56 -0500
I have a link to his site on my page. What I haven't figured out is why the 6-meter amp is export only when it's a legal limit amp with the same tubes as the other amps unless it hasn't been approved
/archives//html/Amps/2009-11/msg00102.html (10,517 bytes)

369. Re: [Amps] PSU design question (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sat, 07 Nov 2009 15:20:48 -0500
What do they do, send them to a certified and independent lab that runs the tests with calibrated equipment? That should only run a few thousand dollars so it must be something more than just intermo
/archives//html/Amps/2009-11/msg00108.html (9,721 bytes)

370. Re: [Amps] HV ripple voltage (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sat, 07 Nov 2009 23:10:16 -0500
If building I prefer better, but that's about the kind of regulation on most of my amps. It's an area of rapidly diminishing returns. More iron, more copper, more capacity, and lots more money for an
/archives//html/Amps/2009-11/msg00117.html (8,545 bytes)

371. Re: [Amps] B- questions (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 08 Nov 2009 22:35:36 -0500
At the bottom end of the chain with a resistor and meter to ground there are only a few volts to ground. Only if the meter "and shunt" open is the true B- at that point. When measuring at the B+ line
/archives//html/Amps/2009-11/msg00132.html (11,727 bytes)

372. Re: [Amps] B- is ur grade (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Tue, 10 Nov 2009 02:32:46 -0500
They must be multiplying in your computer. I've not seen over 100. Course if some one changes the title it gives a false count. OTOH even including all recent PS questions and comments I doubt it goe
/archives//html/Amps/2009-11/msg00161.html (8,683 bytes)

373. [Amps] Stripline design (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 15 Nov 2009 22:04:06 -0500
I'm looking at building a 2-meter amp using a stripline with a pair of 3-CX800's or 4CX-800's, but I've not found any real data on the design (dimensions) of the actual strip line. Another possibilit
/archives//html/Amps/2009-11/msg00182.html (7,469 bytes)

374. Re: [Amps] Stripline design (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 15 Nov 2009 23:42:59 -0500
That's one of the reasons I'd like to learn a bit of strip line theory as I only have dimensions for a single 3 CX-800 that I could replace with a single 4CX-1500 for legal limit. What I don't know i
/archives//html/Amps/2009-11/msg00184.html (10,665 bytes)

375. Re: [Amps] Stripline design (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 15 Nov 2009 23:52:09 -0500
Any idea as to what issue of QST or even year? I do have all of them on disk except the recent ones. I don't remember one using a pair of 4CX1000s. The 4CX-1500B would be a drop in for the 4CX1000A e
/archives//html/Amps/2009-11/msg00185.html (9,396 bytes)

376. Re: [Amps] Stripline design (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Thu, 19 Nov 2009 20:08:11 -0500
Some of the early versions of AutoCad bout drove me nuts as they had one or two modified DLLs instead of creating their own, OR they had a screwed up compiler like one I had that confused the DLL dat
/archives//html/Amps/2009-11/msg00207.html (10,000 bytes)

377. Re: [Amps] Right Angle UHF Connector (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 22 Nov 2009 15:08:33 -0500
I use 5 or 6 of them, but I've had them for many years. Most any of the regular suppliers of connectors should have them. Just look for good quality ones which are not expensive by themselves. Unfort
/archives//html/Amps/2009-11/msg00226.html (7,595 bytes)

378. Re: [Amps] OT: Fw: Who sells black rope? (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Tue, 24 Nov 2009 13:35:06 -0500
YMMV from distributor to distributor, but I think you will find that is not a nylon core, but just a different color dacron. At least what I have here is not nylon and does not stretch like nylon. Th
/archives//html/Amps/2009-11/msg00263.html (7,576 bytes)

379. Re: [Amps] Henry 3k-A 2.85 watts ouput with 85 watts in any trouble shooting ideas from the group ? (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sat, 28 Nov 2009 23:36:29 -0500
By dialing the input power back I assume you mean drive from the exciter? Output of the exciter? Measured at the input terminal of the amp, or is this plate current multiplied by plate voltage? 73 Ro
/archives//html/Amps/2009-11/msg00284.html (9,072 bytes)

380. Re: [Amps] SB-220: 1,800 Watts Output (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Sun, 29 Nov 2009 16:39:58 -0500
I'd truly like to have a KWS-1 again, but he's going to have to include the magic formula for getting 1500 watts out of a single 4CX250, or was that a 150? It's been a good 30 years plus since I had
/archives//html/Amps/2009-11/msg00287.html (7,941 bytes)

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