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Total 84 documents matching your query.

1. [Amps] 4CX1500B (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Wed, 21 Sep 2005 16:25:26 +1000
This one may have been asked before.Over the past few years I have constructed a few amplifiers using pairs of 4CX250/350B tubes in Super Cathode Driven Mode,The Screen Grid grounded and the Control
/archives//html/Amps/2005-09/msg00251.html (6,708 bytes)

2. [Amps] 4CX1500B (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Thu, 22 Sep 2005 08:28:53 +1000
I have received several query's about the Super Cathode Drive method on my 4CX250 B amplifiers. The amplifier's take around 100 watts of drive power for 600 watts output. When the drive input is corr
/archives//html/Amps/2005-09/msg00274.html (7,629 bytes)

3. [Amps] re 955 (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Wed, 28 Sep 2005 11:12:36 +1000
Hi,re acorn tubes,I have quantities of new in carton 954,955 956 and 958 acorn tubes if anybody interested. Bob VK3ZL.. _______________________________________________ Amps mailing list Amps@contesti
/archives//html/Amps/2005-09/msg00341.html (6,128 bytes)

4. [Amps] 955 (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Wed, 28 Sep 2005 14:42:50 +1000
In addition to acorn tubes I have available 4 6cw4 tubes if anybody requires them. Bob VK3ZL.. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.conte
/archives//html/Amps/2005-09/msg00347.html (6,034 bytes)

5. [Amps] the radio handbook by mr orr w6sai and amps (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 24 Jul 2006 22:05:39 +1000
I have the 23rd edition of the Radio Handbook by William Orr W6SAI.In section 17-9,High Power Amplifier Design it shows a circuit diagram for a pair of 3-500Z triodes in Grounded Grid.The circuit is
/archives//html/Amps/2006-07/msg01007.html (7,065 bytes)

6. [Amps] Cooling for GI-7B triodes. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Tue, 05 Sep 2006 13:11:57 +1000
I am currently constructing another linear amplifier this time using a pair of GI-7B(T) triodes. Perusing various projects using these tubes I note that most builders use an ordinary standard compute
/archives//html/Amps/2006-09/msg00085.html (7,085 bytes)

7. [Amps] Parasitic suppressors on GI-7B. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sun, 10 Sep 2006 16:57:00 +1000
I am just completing the RF deck on my new 2 x GI-7B(T) HF amplifier. I note on all available information that there are parasitic suppressors pictured on all the retrofitted amplifiers.There seems t
/archives//html/Amps/2006-09/msg00161.html (7,029 bytes)

8. [Amps] Parasitic suppressors (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 11 Sep 2006 06:58:47 +1000
To all who mailed me re P/S, my computer dumped all my mail before I got to read it this morning.Can't retrieve it.would appreciate it if you can re send. Tnx....Bob VK3ZL.. _________________________
/archives//html/Amps/2006-09/msg00177.html (6,129 bytes)

9. [Amps] Parasitic Suppressors for GI-7B. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Tue, 12 Sep 2006 07:28:39 +1000
Thanks to all who sent direct replys and the posts on Amps.I have enough information now to proceed with the new amplifier. 73....Bob VK3ZL.. _______________________________________________ Amps mail
/archives//html/Amps/2006-09/msg00186.html (6,267 bytes)

10. [Amps] Filament Voltage Parameters on Russian Triodes. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 09 Oct 2006 21:52:47 +1000
Interesting reading the Filament data on the Russian triodes,GS-35B-GS-31B and the GI-7B. GS-35B Nominal Parameters 12.6 volts.. Electrical Parameters 11.9 to 13.3 volts.. GS-31B Nominal Parameters 1
/archives//html/Amps/2006-10/msg00070.html (7,339 bytes)

11. [Amps] Large doorknob Capacitors. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Tue, 27 Feb 2007 19:58:10 +1100
I have three large Ducon Ceramic doorknob capacitors. No 1. is marked 2000pf +- 20%. 60Kva 8KV peak.No 2 appears identical but the markings are rubbed off. No. 3 is marked 2000pf +- 20% 50Kva 10Kv pe
/archives//html/Amps/2007-02/msg00400.html (6,449 bytes)

12. [Amps] Edge wound inductors (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Wed, 28 Feb 2007 10:31:34 +1100
I have a quantity of these edge wound inductors ex old broadcast station equipment.Most were made by AWA. They range from quite small, 30uh to more than 300uh.I have been able to use a few of the sma
/archives//html/Amps/2007-02/msg00409.html (6,719 bytes)

13. Re: [Amps] (Amps) This reflector. (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Tue, 20 Mar 2007 12:10:21 +1100
Well Don, it's a free world and if the "other" amps group is what spins your turbine then we guess that's where you should be. Bob VK3ZL.. _______________________________________________ Amps mailing
/archives//html/Amps/2007-03/msg00223.html (6,662 bytes)

14. [Amps] Big doorknob capacitors (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Fri, 23 Mar 2007 10:56:54 +1100
I have a quantity of large doorknob capacitors ex broadcast industry.Sangamo,and Ducon.I have three on ebay at present if anybody is interested ...160097709496. I have a photo of the rest and happy t
/archives//html/Amps/2007-03/msg00308.html (6,573 bytes)

15. [Amps] Manual for Kenwood TS-700A (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Fri, 6 Apr 2007 20:15:49 +1000
Hi all.I have just inherited a Kenwood TS-700A transceiver.I want to recondition it and I am looking for a copy of the manual and possibly the workshop manual as well.On CD would be fine.. Wonder if
/archives//html/Amps/2007-04/msg00017.html (6,380 bytes)

16. [Amps] Re Kenwood files.. (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Fri, 6 Apr 2007 23:00:34 +1000
Hi again all.thanks to Joe I have the files downloaded to disk. Enjoy Easter.. Bob VK3ZL.. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contestin
/archives//html/Amps/2007-04/msg00018.html (6,365 bytes)

17. [Amps] Vac Variable (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Mon, 11 Jun 2007 20:39:05 +1000
Hi all,I am looking for a small vac variable around 350-400pf 5KV rated for an amplifier project.VK power rated. Bob VK3ZL... _______________________________________________ Amps mailing list Amps@co
/archives//html/Amps/2007-06/msg00067.html (6,108 bytes)

18. [Amps] Vac Va (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Sat, 23 Jun 2007 09:44:41 +1000
Further to my post on Amps re obtaining a vacuum capacitor I finally found a suitable unit on Paval's ebay site.I had to make a direct purchase from Pavel as he informs me he has had a number of bad
/archives//html/Amps/2007-06/msg00119.html (6,595 bytes)

19. [Amps] National Power Tube (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Sun, 24 Jun 2007 21:07:37 +1000
Hi all.This is just a curiosity question. I picked up a box of radio junk the other week with a few tubes among other sundry things.There were a few new TT21 and KT66 tubes and some old 866 mercury v
/archives//html/Amps/2007-06/msg00134.html (6,624 bytes)

20. [Amps] Follow up on purchase from Paval. (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Mon, 23 Jul 2007 11:54:44 +1000
Hi all.I am pleased to advise I received my Vacuum capacitor from Paval this morning.Beautifully packed.I would recommend Paval and Mats to anybody for good quick and honest dealing for those hard to
/archives//html/Amps/2007-07/msg00360.html (6,432 bytes)

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