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Total 16 documents matching your query.

1. [Amps] 813 screen (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Mon, 09 Mar 2009 02:09:12 +0000
Hi I hope you non`t think this trivial but..... Can anyone confirm one way or the other the placing of the internal screening plate at bottom of tube near base which is connected to a pin,and is grou
/archives//html/Amps/2009-03/msg00248.html (7,268 bytes)

2. [Amps] Filament transformer question (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Wed, 11 Mar 2009 22:11:15 +0000
Hi All. Can someone clear up a point regarding centre tapped filament transformers. I am having one wound for my 4x 813 amp,where I need 10v@20amps. I told the winder, and he wants clearing up does i
/archives//html/Amps/2009-03/msg00327.html (7,110 bytes)

3. [Amps] 813 amp (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Tue, 31 Mar 2009 08:44:54 +0100
As Im trying to get the parts together to make one.Its days like this I wish I lived in the States. Jon G8CCL ;-( _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2009-03/msg00548.html (6,288 bytes)

4. [Amps] Band switches. (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Fri, 24 Apr 2009 12:57:02 +0100
Hi all. As the supply of decent band switches is diminishing,what is the feasibility of using relays with heavy duty contacts say 30Amp rating. I say this as a neighbour of mine worked on High power
/archives//html/Amps/2009-04/msg00308.html (6,865 bytes)

5. [Amps] grounded grid 813 x4 (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Mon, 27 Jul 2009 12:36:27 +0100
Hi. This has probable been asked before on this group,but... Is it good practice to physically tie the grids to ground via one connection,or via low value resistors and decoupling capacitors. I was g
/archives//html/Amps/2009-07/msg00336.html (6,530 bytes)

6. [Amps] 4x813`s in GG (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Mon, 27 Jul 2009 18:38:35 +0100
Hi Carl, and all that gave some advice. Its good I have some things right!The amp has its 813`s in a box formation with bases 1/4" lower than deck on pillars with a gap around valve envelope.Below de
/archives//html/Amps/2009-07/msg00339.html (6,749 bytes)

7. [Amps] Tinned copper wire (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Wed, 30 Dec 2009 17:45:54 +0000
Hi Festive amp builders. This is one for UK readers, Question; where can I get some 10swg Tinned copper wire in the UK. Long ago I had a friend who was a cable jointer for London electric. but those
/archives//html/Amps/2009-12/msg00573.html (6,441 bytes)

8. [Amps] Homebrew Amps (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Mon, 01 Feb 2010 09:59:08 +0000
Here is my slant on this thread. For the last 10yrs I have been slowly collecting bits for an amp. I would have liked to have got my hands on an old SB200 or similar but in UK are rarer than hens tee
/archives//html/Amps/2010-02/msg00001.html (7,653 bytes)

9. [Amps] To the person who emailed me (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Thu, 04 Feb 2010 18:52:49 +0000
Hi everyone. Recently I posted an email regarding my reasons for homebrewing and what I was building. A chap emailed me privately who was in a similar position to me and had built a similar amp. and
/archives//html/Amps/2010-02/msg00110.html (6,805 bytes)

10. [Amps] QRO for 160. (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Tue, 09 Feb 2010 10:27:54 +0000
Now just what I need !!,wonder if it will fit inside the shed Jon`8CCL PS I have made a start on the raft now,got a GPS Dave? _______________________________________________ Amps mailing list Amps@co
/archives//html/Amps/2010-02/msg00274.html (6,293 bytes)

11. [Amps] QRO vQRP (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Tue, 23 Feb 2010 10:15:47 +0000
And I just thought it was me Dave, with our IZ et all brigade I observe the same conditions apply just further to the east .The whole area is alive with echo-boxes and overdriven amps. Many a night I
/archives//html/Amps/2010-02/msg00679.html (6,776 bytes)

12. [Amps] Snaked vermin and puddycats (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Sat, 06 Mar 2010 09:12:58 +0000
Dave you are as bad as my wife!. For years we had cats,and no mice,but sadly our old cat Jess died,within weeks our pesky varmints arrived .My wife went and got a "humane" trap,and as fast as she let
/archives//html/Amps/2010-03/msg00108.html (6,828 bytes)

13. [Amps] Advance A1500 48VOLT switched mode PSU (score: 1)
Author: Jonathan white <jonathan.white20@btinternet.com>
Date: Sun, 14 Mar 2010 01:55:11 +0000
Dear Team Has anyone got any info on this power supply. I have been given this and a 500w wide band hf amp. This was part of a QRO commercial hf TX.My neighbor, made the unit as part of the developme
/archives//html/Amps/2010-03/msg00225.html (7,205 bytes)

14. Re: [Amps] 4CX250B Ratings in Dentron Clipperton V (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Sun, 23 May 2010 12:05:01 +0100
I agree with you Ian, 25yrs back,there was some outrageous signals on 2mtrs with overdriven `250b`s poor regulation of screen supply, poor anode supply and zenner diode stacks feeding screen. Also th
/archives//html/Amps/2010-05/msg00318.html (10,544 bytes)

15. [Amps] GRIPE! (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Fri, 8 Oct 2010 12:03:43 +0100
I wont look anymore,at least you see things like this stateside,they are like hens teeth and mega bucks here. And we all hear the stories of "picked one up at a rally" for like cheap. Regards Jon ___
/archives//html/Amps/2010-10/msg00119.html (6,300 bytes)

16. [Amps] Transformers (score: 1)
Author: jonathan white <jonathan.white20@btinternet.com>
Date: Sun, 31 Oct 2010 15:49:58 +0000
Hi Readers. For UK residents mainly I will second the endorsement of Dave regarding JMS transformers.They wound my heater transformer for 4 x 813`s had it back in around three days varnish was still
/archives//html/Amps/2010-10/msg00489.html (7,073 bytes)

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