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References: [ +from:vk3zl@bigpond.com: 84 ]

Total 84 documents matching your query.

21. [Amps] AL-80B transformer tap.. (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Tue, 24 Jul 2007 13:10:57 +1000
Mike,I doubt that you need to worry over much about a bit of extra mains voltage.Try mine.264volts fluctuating to as low as 210 depending on the time of the day.I have been running a few amplifiers c
/archives//html/Amps/2007-07/msg00398.html (6,710 bytes)

22. [Amps] Heat Dissapating 8877 HV Plate Caps (score: 1)
Author: "robert briggs" <vk3zl@bigpond.com>
Date: Sat, 25 Aug 2007 11:53:52 +1000
Interesting to note all the crapola over the heat dissapating caps.In a number of HFamplifiers I have built I have used these caps on metal ceramic tubes.Whats wrong with a bit of extra metal to assi
/archives//html/Amps/2007-08/msg00167.html (6,599 bytes)

23. [Amps] Loading capacitor (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Fri, 07 Sep 2007 11:12:24 +1000
Hi all,I am seeking an E.F.Johnson loading capacitor around 800 or 1000pf for another amplifier project GS-31B..I wonder if someone has one in the junk box in good condition for a reasonable price an
/archives//html/Amps/2007-09/msg00063.html (6,623 bytes)

24. [Amps] Super Cathode Circuit (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sat, 29 Sep 2007 10:02:50 +1000
I built several amplifiers using the Super Cathode Driven circuit a few years ago using pairs of 4CX250R and 350R tubes. I tied the grid to the cathode and directly grounded the screen. I found that
/archives//html/Amps/2007-09/msg00471.html (8,505 bytes)

25. [Amps] Power transformer....Yaesu 2000....2100z etc (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Thu, 24 Jan 2008 20:56:08 +1100
Hi all...I am in urgent need of a power trannie from a Yaesu....2000...2100z etc.Please email me with details >>price including shipping to VK... 73.....Bob VK3ZL.. __________________________________
/archives//html/Amps/2008-01/msg00163.html (6,328 bytes)

26. [Amps] For Sale (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 24 Mar 2008 21:31:17 +1100
You think you have seen it all ?? Check ebay item 220214116100........ $8grand !!!!!!!! Cheers all......Bob VK3ZL.. _______________________________________________ Amps mailing list Amps@contesting.c
/archives//html/Amps/2008-03/msg00234.html (6,156 bytes)

27. [Amps] Chimney for GS-31B (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Thu, 01 May 2008 18:36:35 +1000
Hi all, I have been pondering for a solution for a chimney for various external anode tubes.I am currently completing another amplifier using a GS-31B.Not having access to Teflon or other expensive m
/archives//html/Amps/2008-05/msg00000.html (6,478 bytes)

28. [Amps] Re GS-31B Chimney (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Fri, 02 May 2008 11:21:08 +1000
Hi again all, I have been overwhelmed with ideas and suggestions and offers of help with the chimney situation.Many very innovative.. The silicon baking sheet does stick together with silicon cement.
/archives//html/Amps/2008-05/msg00004.html (6,964 bytes)

29. [Amps] Real working data GI-46B (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Wed, 18 Jun 2008 20:42:42 +1000
Hi all, I have just picked up some new Russian GI-46B triodes in a junk box sale..I have scanned data from the internet and also from the Amps archives so I have some idea of the operation data..I wa
/archives//html/Amps/2008-06/msg00133.html (6,613 bytes)

30. [Amps] Plate choke material.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sat, 19 Jul 2008 21:07:11 +1000
Hi all, I am scratching around to find some material to make another couple of plate chokes for one of my new amplifiers.. Price of 3/4 inch Teflon per foot here in Aus is outrageous....I have some U
/archives//html/Amps/2008-07/msg00150.html (6,576 bytes)

31. [Amps] Re choke formers. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sun, 20 Jul 2008 20:15:37 +1000
Thanks to all who replied to my query here and via email..There are many and varied materials suggested..Meanwhile I went for a deeper scrounge into my extensive junkbox and found some old 75 watt 30
/archives//html/Amps/2008-07/msg00164.html (6,549 bytes)

32. [Amps] Re Choke Formers.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 21 Jul 2008 12:49:59 +1000
To Carl and all..My reference to circlips obviously has a different meaning in your lingo.....The "circlips" I refer to are used on shafts to hold bearings etc in place and are not a closed circle..T
/archives//html/Amps/2008-07/msg00177.html (6,359 bytes)

33. [Amps] Cooler....GI-46B.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 28 Jul 2008 09:50:07 +1000
Hi all....I'm on the "bot" again...I am looking for a spare cooler for a GI-46B tube...Situation is this >>>> I am presently constructing another GI-7B amplifier...I intend replacing the existing coo
/archives//html/Amps/2008-07/msg00301.html (6,894 bytes)

34. [Amps] Power transformer... (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sun, 25 Jan 2009 17:41:00 +1100
Hi all....I have just received a power transformer salvaged from a Yaesu FL dx2500 linear...I have checked it out and it appears in excellent condition....I am about to build another monoband 160 met
/archives//html/Amps/2009-01/msg00286.html (7,233 bytes)

35. [Amps] Plate Choke Values... (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Fri, 06 Feb 2009 09:59:51 +1100
Hi all.....Being a very non technical home brewer I mulled over the choke problem..I can recall an amplifier I built using a pair of 4-250A tubes in GG.....When I first started using it I noticed I w
/archives//html/Amps/2009-02/msg00134.html (7,505 bytes)

36. [Amps] Pi Network inductors.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 09 Feb 2009 13:19:09 +1100
Hi all...I have been requested to make a new set of inductors for the Pi output network for a Dentron 160-10L amplifier...It would appear that this unit was chopped for use on 11 meters and the new o
/archives//html/Amps/2009-02/msg00213.html (6,530 bytes)

37. [Amps] New GS-35B amplifier.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sun, 12 Apr 2009 12:09:41 +1000
Hi all....I have just completed a new single band 160 meter GS-35B amplifier...After troubleshooting a minor bias problem I put some RF into it this morning....Sadly I seem to have a problem which I
/archives//html/Amps/2009-04/msg00132.html (7,808 bytes)

38. Re: [Amps] New GS-35B amplifier.. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Sun, 12 Apr 2009 15:12:08 +1000
Hi ken, The plate choke bypass capacitor is a .0015pf 6kv ceramic.....Plate choke is 215 turns on a 1 inch Teflon former standard values I am using in another 160 meter GS-35B amplifier _____________
/archives//html/Amps/2009-04/msg00135.html (8,080 bytes)

39. [Amps] New GS-35B amplifier (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Mon, 13 Apr 2009 18:55:52 +1000
Hi again all...thank you for the replies and possible areas to check for the GS-35B linear problem...Three areas to look at it seems... One is the placement of the electronic bias board in the cathod
/archives//html/Amps/2009-04/msg00148.html (7,689 bytes)

40. [Amps] new GS-35B amplifier. (score: 1)
Author: robert briggs <vk3zl@bigpond.com>
Date: Wed, 15 Apr 2009 12:10:13 +1000
Hi all, success at last...I am happy to report that I have finally sorted out the bugs which were causing me much angst with my new GS-35B 160 meter amplifier....Put down most of the trouble to my ow
/archives//html/Amps/2009-04/msg00152.html (8,422 bytes)

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