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1. Re: [Amps] Transformers in series (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 11 Mar 2006 22:07:17 -0500
but what about the amperage, does it double, too? Nope, you get the same amps as a single transformer. If you want twice the current, you put them in parallel. Then you just get the rated voltage of
/archives//html/Amps/2006-03/msg00273.html (7,663 bytes)

2. Re: [Amps] Transformers in series (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 11 Mar 2006 22:15:16 -0500
Be careful tho, the primaries and the secondaries BOTH have to be in parallel... or else you're just running a short circuit! Good luck K1HI Rex Lint, Consultant PH: 603-860-7651 FAX: 603-882-6612 We
/archives//html/Amps/2006-03/msg00275.html (8,575 bytes)

3. [Amps] CHASSIS (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Wed, 15 Mar 2006 12:58:31 -0500
I'm looking for a set of ideas about how to construct (or buy!) chassis for amps and power supplies. I bought an amp that has the power supply built into a plywood box, and I'm moved to change that!
/archives//html/Amps/2006-03/msg00394.html (6,888 bytes)

4. Re: [Amps] CHASSIS (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 16 Mar 2006 13:02:55 -0500
Will, This looks promising. I wish the prices of built-to-inventory from other suppliers were this good! K1hi Rex Lint, Consultant PH: 603-860-7651 FAX: 603-882-6612 Wood cabinets for electronics hav
/archives//html/Amps/2006-03/msg00472.html (12,135 bytes)

5. Re: [Amps] Trichloroethene (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 16 Mar 2006 13:17:24 -0500
There was something called MEK used in the labs - methyl-ethyl-keytone I think. What's dangerous about that? Anything? What was it used for? K1HI Rex Lint I remembered the solvent we used to clean th
/archives//html/Amps/2006-03/msg00473.html (8,629 bytes)

6. Re: [Amps] Trichloroethene (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Fri, 17 Mar 2006 12:50:57 -0500
What's the stuff called "solvent" we used to use instead of gasoline to clean car parts? Rex K1HI _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co
/archives//html/Amps/2006-03/msg00502.html (7,983 bytes)

7. Re: [Amps] New here (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 4 Nov 2008 05:15:56 -0500
Welcome, Laurens, I looked at you web page and you have underdaken some interesting projects. I hope you find information and contacts here to help. 73, -Rex  K1HI       Rex Lint       Merrimack, NH
/archives//html/Amps/2008-11/msg00025.html (7,880 bytes)

8. Re: [Amps] OT: 4 square query (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 6 Nov 2008 11:22:49 -0500
Carl, ON4UN's book has plans for a nested set of 160, 80, 40 4 squares using a tower in the middle - I may be wrong, but I think K1KI built an implementation of it. Stock up on those poles! Remember
/archives//html/Amps/2008-11/msg00038.html (10,909 bytes)

9. Re: [Amps] SB-220 saga continues (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sun, 9 Nov 2008 13:34:54 -0500
This condition suggests there is a short in the keying circuit inside the amp... -Rex  K1HI       Rex Lint       Merrimack, NH A friend locally described a very similar situation he is having with hi
/archives//html/Amps/2008-11/msg00077.html (13,350 bytes)

10. Re: [Amps] SB-220 saga continues (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sun, 9 Nov 2008 14:04:26 -0500
Pete, I'm interested to know about vacuum relays in an SB220. Details? -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054      PH: 603-860-7651     My Mark 5 has one. My SB-220, though, now
/archives//html/Amps/2008-11/msg00079.html (14,696 bytes)

11. Re: [Amps] Slow Keying Issue (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Mon, 26 Jan 2009 15:46:11 -0500
Russ, et.al. Most of the modern contest logging programs send CW when you push function keys. They also provide a line that can be used to key the PTT function of the TCVR and thence the amp, and the
/archives//html/Amps/2009-01/msg00309.html (8,878 bytes)

12. Re: [Amps] Unusual source of HV and some amp parts (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 5 Feb 2009 15:39:52 -0500
I'm surprised I hadn't found the connection between this industry and ours before! Google RF Heat Sealer Replacement Parts. Amazing! -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054      P
/archives//html/Amps/2009-02/msg00129.html (7,608 bytes)

13. [Amps] Pole Pigs (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 5 Feb 2009 18:02:38 -0500
When I saw my first contest station, the "amp" was a power supply that drove 6 RF decks. The power supply was a pole pig, and you could run all of the amps at the same time, if you wanted. I haven't
/archives//html/Amps/2009-02/msg00135.html (7,097 bytes)

14. Re: [Amps] 1625 (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 12 Feb 2009 18:03:23 -0500
Whew! The max rating for a 6AG7 is 300 V, so you ran them at 3.3 the max voltage! It must be one tough tube. The plate dissapation is 9 watts, so 4*9 = 36 watts, and if you pegged the 200 ma meter, t
/archives//html/Amps/2009-02/msg00384.html (9,521 bytes)

15. Re: [Amps] "Big Iron" transformer source in UK? (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sun, 1 Mar 2009 13:13:30 -0500
Alex, Some folks build one power supply and several RF decks - one for each band. In a multi-multi contest arrangements, they may ALL be on at the same time. The PS can handle it. A friend of mine di
/archives//html/Amps/2009-03/msg00018.html (12,501 bytes)

16. Re: [Amps] SB-1000 - 100ma minimum plate current. (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Wed, 11 Mar 2009 08:10:20 -0400
" The manual notes more than 80ma of "idle current" is a Zener diode failure (D2) which appears to be in the power supply, but I'm not clear on what "idle" means - it doesn't indicate current in Stan
/archives//html/Amps/2009-03/msg00304.html (10,200 bytes)

17. Re: [Amps] plate dissipation and duty factor (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 12 Mar 2009 11:30:01 -0400
I would think that PSK would be the same as RTTY - you have a tone on all the time - just changing its phase -Rex  K1HI        Rex Lint       Merrimack, NH --Original Message-- From: amps-bounces@con
/archives//html/Amps/2009-03/msg00343.html (14,491 bytes)

18. Re: [Amps] Heathkit SB220 manual (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 17 Mar 2009 08:15:44 -0400
Lee, et. al., I thought "Heath", whoever they are now, started asserting their intellectual property rights in the past year and are now chasing the purveyers of FREE manuals. It does show up on the
/archives//html/Amps/2009-03/msg00463.html (9,586 bytes)

19. Re: [Amps] Heathkit SB220 manual (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 17 Mar 2009 17:59:11 -0400
Ah, but he DID contribute: he bought the rights! And what's a "back catalog"? -Rex  K1HI        Rex Lint       Merrimack, NH I have a copy of the SB220 manual on PDF that I'm happy to send to anyone
/archives//html/Amps/2009-03/msg00473.html (12,152 bytes)

20. [Amps] FW: Heathkit SB220 manual (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 17 Mar 2009 18:00:11 -0400
Not any more. According to wikipedia, "The Copyright Term Extension Act (CTEA) of 1998 extended copyright terms in the United States by 20 years. Since the Copyright Act of 1976, copyright would last
/archives//html/Amps/2009-03/msg00474.html (13,543 bytes)

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