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Total 20 documents matching your query.

1. Re: [Amps] TL-922 Cooling (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Sun, 10 Sep 2006 15:34:00 -0400
Alek, The stock TL-922 fan sucks the air from the amplifier and exhausts it out the back of the amp. 73, Don _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2006-09/msg00175.html (7,723 bytes)

2. Re: [Amps] Seimens SVP tspa (score: 1)
Author: don <ki6sz@sbcglobal.net>
Date: Fri, 16 Feb 2007 03:54:52 -0500
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-02/msg00256.html (8,952 bytes)

3. Re: [Amps] TL922 Kessler Mods (score: 1)
Author: don <ki6sz@sbcglobal.net>
Date: Thu, 22 Feb 2007 04:34:02 -0500
Natan, As I described on the phone, when the amp is unkeyed, it shouldn't have any anode current. Either the bias transistor or its parallel glitch diode has shorted. These are fairly easily replaced
/archives//html/Amps/2007-02/msg00355.html (8,049 bytes)

4. Re: [Amps] this reflector (score: 1)
Author: don <ki6sz@sbcglobal.net>
Date: Mon, 19 Mar 2007 23:26:30 -0400
Carl, This is precisely why I joined the "other" amps group which seems to have a good balance and technical basis. Just my opinion... Don _______________________________________________ Amps mailing
/archives//html/Amps/2007-03/msg00221.html (8,081 bytes)

5. Re: [Amps] MFJ and Dahl (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Sat, 8 Dec 2007 20:14:07 -0500
Thankfully Martin Jue was not running it. If he had, it would have earned the shame reputation that MFJ has for producing utter rubbish... MFJ has managed to suck the quality out of every company the
/archives//html/Amps/2007-12/msg00085.html (7,579 bytes)

6. [Amps] TL-922 Output Bandswitch (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Thu, 3 Jan 2008 16:54:45 -0500
Folks just an FYI -- after looking literally on every continent for the discontinued Kenwood TL-922 bandswitch, I bit the bullet back in May and contracted to have the original TL-922 output bandswit
/archives//html/Amps/2008-01/msg00045.html (6,711 bytes)

7. Re: [Amps] Kenwood TL-922A Problem (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Thu, 3 Jan 2008 22:09:47 -0500
Tom, Do you have idling current when you key the amp? It should be about 180-200mA when in SSB or about 90-100mA when in CW mode. Don _______________________________________________ Amps mailing list
/archives//html/Amps/2008-01/msg00053.html (8,668 bytes)

8. Re: [Amps] Step start (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Sun, 3 Feb 2008 02:46:52 -0500
I also thought that the step-start was to limit the inrush current to the cold filaments. Also -- The initial inrush current is sufficient to weld the contacts in the main power switch -- I've had to
/archives//html/Amps/2008-02/msg00005.html (7,315 bytes)

9. [Amps] Recommended Idleing Current for Two 3CPX800A7 tubes? (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Wed, 1 Apr 2009 20:54:55 -0400
I'm sure someone here on this reflector would know so I'll ask: What is the recommended zero-signal idleing current for a pair of 3CPX800A7 tubes with an anode voltage of approximately 2800V and for
/archives//html/Amps/2009-04/msg00023.html (8,909 bytes)

10. [Amps] Does ANYONE know what the zero signal anode current should be for a pair of 3CPX800A7 tubes? (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Fri, 3 Apr 2009 19:37:34 -0400
Hello, I have not been able to find a definitive answer anywhere as to what a good ZSAC level is for a pair of these tubes in AB2 service with 2800V or 3200V on the anode. Any help is appreciated. Th
/archives//html/Amps/2009-04/msg00044.html (7,628 bytes)

11. Re: [Amps] 3CX800 and blower (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Mon, 7 Sep 2009 13:08:59 -0400
According to the data sheet for this tube and from talking to the folks at CPI (Eimac) directly, forced air cooling is absolutely mandatory whenever current is applied to the filament. I know from pe
/archives//html/Amps/2009-09/msg00074.html (8,558 bytes)

12. Re: [Amps] filament choke questions (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Thu, 8 Oct 2009 19:57:51 -0400
Interesting... I recently completed redesign of several amps, all are single and two-tube amps using the Eimac (CPI) 3CPX800A7. The datasheet for this tube as well as for the 8877 states that both fi
/archives//html/Amps/2009-10/msg00146.html (8,788 bytes)

13. Re: [Amps] filament choke questions (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Thu, 8 Oct 2009 20:29:15 -0400
Interesting... We recently finished redesign of several RF amps, all using the 3CPX800A7. The original amps all had one filament lead tied directly to the chassis without any filament choke. The othe
/archives//html/Amps/2009-10/msg00148.html (9,290 bytes)

14. Re: [Amps] re Palstar 1500 W auto tuner (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Tue, 5 Apr 2011 08:23:11 -0400
Fern, There is information on my website: www.kesslerengineeringllc.com Thanks, Don _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
/archives//html/Amps/2011-04/msg00160.html (8,415 bytes)

15. Re: [Amps] Relay suggestions please (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Fri, 9 Mar 2012 10:20:28 -0500
Larry, I also use "conventional" relays for RF switching. However, while the relay voltage and current handling of "conventional" relays may be sufficient for this purpose, I've found that convention
/archives//html/Amps/2012-03/msg00075.html (11,363 bytes)

16. Re: [Amps] Commander 2500 Magnum (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Thu, 07 Feb 2013 13:27:33 -0500
Art, The HV transformer should have plugs on the primary and secondary windings. Simply unplug the HV transformer secondary and there will be no high-voltage. If my memory serves me correctly, the wa
/archives//html/Amps/2013-02/msg00060.html (10,795 bytes)

17. Re: [Amps] Time for New Power Meter (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Wed, 22 Apr 2015 11:00:48 -0400
I too highly recommend the LP-100A. I also own the Array Solutions Powermaster. I greatly prefer the LP-100A. Its a keeper and in my experience its been more accurate. The display in the Powermaster
/archives//html/Amps/2015-04/msg00152.html (10,807 bytes)

18. Re: [Amps] Tl 922 mods (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Wed, 28 Oct 2015 22:03:00 -0400
Please consider this as well: http://kesslerengineeringllc.com/tl922.html 73, Don http://somis.org/ There's a wealth of good stuff on the TL-922 there. http://www.pa0fri.com/ Click on Mods and then K
/archives//html/Amps/2015-10/msg00063.html (10,096 bytes)

19. Re: [Amps] Commander VHF-1200 questions (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Wed, 29 Jul 2020 15:56:42 -0400
Jeff -- Contact me off-line.  I can probably provide some information that might be helpful. Regarding lineage:  Commander was sold to AN Wireless.  VERY shortly thereafter AN Wireless sold the Comma
/archives//html/Amps/2020-07/msg00031.html (9,819 bytes)

20. Re: [Amps] TL-922A on 17 & 12 (score: 1)
Author: Don Kessler <ki6sz@sbcglobal.net>
Date: Tue, 12 Oct 2021 00:09:33 -0400
Yes Get BlueMail for Android _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2021-10/msg00052.html (7,245 bytes)

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