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Total 26 documents matching your query.

1. [Amps] GU84B (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Fri, 4 Apr 2008 00:17:19 +0200
Hello all, I'm looking around for 2 pieces of GU84B tubes (NOS). Can someone help me? Thanks in advance. 73's, Evert PA2KW _______________________________________________ Amps mailing list Amps@conte
/archives//html/Amps/2008-04/msg00086.html (6,335 bytes)

2. Re: [Amps] gs35b tube (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sat, 12 Apr 2008 23:02:21 +0200
Wayne, Have a look for a PROPER design with the GS35B on: http://yu1aw.ba-karlsruhe.de/engl.htm You won't be disappointed. Be careful with switching on the filament without current restrictions. Many
/archives//html/Amps/2008-04/msg00182.html (7,900 bytes)

3. Re: [Amps] Excessive grid current - AL811HXCE (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 18 May 2008 16:24:11 +0200
Hi Martin, I don't know which type of tubes this amp is using, but either it's oscillation or it's DC drift due to unstable grid/screen voltage(s). 73's, Evert PA2KW A friend of mine has an AL811HXCE
/archives//html/Amps/2008-05/msg00118.html (9,652 bytes)

4. Re: [Amps] Silver Strap (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Tue, 8 Jul 2008 21:57:11 +0200
As impedance (Z) will change (very very little) with silverplated coils, oscillation might occur. Don't worry about the silver plated straps/coils then You should have serious concerns about the infe
/archives//html/Amps/2008-07/msg00069.html (9,074 bytes)

5. Re: [Amps] Sockets and chimney's for GS35B (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Fri, 24 Oct 2008 11:15:52 +0200
Be very carefull with the filament. Especially cold inrush current is killing for this tube !!!!! --Original Message-- From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On Behalf
/archives//html/Amps/2008-10/msg00106.html (8,794 bytes)

6. Re: [Amps] Step Start Relay (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Fri, 13 Feb 2009 15:47:29 +0100
Adrian, Just use a NTC and you can just put it in the same cabinet. 73's, Evert PA2KW Hi all I am near completion of the re-build of the power supply of my Dentron ML2500 linear, and all is well. I n
/archives//html/Amps/2009-02/msg00414.html (8,762 bytes)

7. Re: [Amps] Step Start Relay (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sat, 14 Feb 2009 00:22:29 +0100
I'm using them with rising confidence and pleasure for years now. Less hardware, less cost and reliable. 73's, Evert PA2KW --Original Message-- From: amps-bounces@contesting.com [mailto:amps-bounces@
/archives//html/Amps/2009-02/msg00430.html (12,288 bytes)

8. Re: [Amps] Step Start Relay (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 15 Feb 2009 21:46:05 +0100
Hello Hsu, I was out for the PACC contest so it took a while to answer. Have a look at this one: http://uk.farnell.com/rhopoint/sg170/thermistor-ntc-surge-gard/dp/1186609?_r equestid=437435 They have
/archives//html/Amps/2009-02/msg00483.html (14,528 bytes)

9. [Amps] Doorknob quality (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 22 Feb 2009 01:22:07 +0100
Hello, When using doorknob capacitors for RF tuning circuits, is there something special I should aware off? (special quality, specific "family") I'm looking for on a 300pF/30kV in my 160 mtr amplifi
/archives//html/Amps/2009-02/msg00634.html (6,564 bytes)

10. Re: [Amps] Doorknob quality (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 22 Feb 2009 08:36:11 +0100
Hello Jim en Colin, Thanks for info. It will be an extra capacitor switched in parallel with the variable plate capacitor (so within the tuning circuit) I "cooked" already two of these (different) do
/archives//html/Amps/2009-02/msg00640.html (9,249 bytes)

11. [Amps] Doorknob quality (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 22 Feb 2009 19:18:14 +0100
Hello all, Thanks a lot for all the replies and useful info. I learned a lot this afternoon. 73's, Evert PA2KW _______________________________________________ Amps mailing list Amps@contesting.com ht
/archives//html/Amps/2009-02/msg00648.html (7,447 bytes)

12. Re: [Amps] Output Matching Network, Need Advice (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Thu, 26 Feb 2009 00:51:08 +0100
Hello Scott, Make sure the plate coil has the value (pre-described measures) and try to get the capacitor in the required range. I know Drago (YU1AW) designs his amps with a very high Q unloaded and
/archives//html/Amps/2009-02/msg00671.html (9,735 bytes)

13. Re: [Amps] Not an RF amp but could pass for one......... (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Wed, 30 Dec 2009 00:33:44 +0100
Was this the forefather of the blue led :-) 73's, Evert PA2KW http://www.youtube.com/watch?v=G7qMVYf85sM&NR=1 http://historische-elektronik.piranho.de/Hyperlink%20F/EL6471%201kW%20Groszv erstaerker.h
/archives//html/Amps/2009-12/msg00562.html (9,485 bytes)

14. Re: [Amps] 144MHz Linear (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Mon, 1 Feb 2010 21:55:20 +0100
I'm running a pair of 4CX250B at 1.3 kW. Living in a crowded area, No complaints whatsoever (except the strength which was the purpose of the exercise). Running WSJT @ 800 W. This amp is in service f
/archives//html/Amps/2010-02/msg00045.html (11,143 bytes)

15. Re: [Amps] QRO Questions (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Fri, 5 Feb 2010 21:59:44 +0100
You must have either excessive hair grow or you're bold :-) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps ___
/archives//html/Amps/2010-02/msg00130.html (12,487 bytes)

16. Re: [Amps] DRAKE L-7 (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sun, 7 Feb 2010 00:02:27 +0100
RF Feedback ?!. Have a look at the grounding of the equipment 73's, Evert PA2KW Can someone pls tell me why when I am loading up my antenna with my Drake L-7, the Keyer on my IC-761 gets stuck. I hav
/archives//html/Amps/2010-02/msg00158.html (7,301 bytes)

17. [Amps] 4PR1000B (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Mon, 24 Jan 2011 22:13:49 +0100
I do have an Eimac 4PR1000B tube. I got this tube about 15 years ago and was used only for a very short period (test purpose). The tube looks really clean (outside and inside) but I just hear somethi
/archives//html/Amps/2011-01/msg00255.html (7,003 bytes)

18. [Amps] GU84B tube (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Fri, 15 Apr 2011 21:04:00 +0200
I'm just gathering information about the GU84B tubes. I want to build an amplifier with this tube for the HF bands. I got the tubes, HF parts and other misc. parts. Will use the G3SEK boards etc. But
/archives//html/Amps/2011-04/msg00445.html (7,211 bytes)

19. [Amps] GU84B (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Sat, 16 Apr 2011 18:23:33 +0200
I'm just gathering information about the GU84B tubes. I want to build an amplifier with this tube for the HF bands. I got the tubes, HF parts and other misc. parts. Will use the G3SEK boards (ordered
/archives//html/Amps/2011-04/msg00460.html (7,267 bytes)

20. Re: [Amps] GU84B (score: 1)
Author: "Evert Bakker \(PA2KW\)" <evert@pa2kw.com>
Date: Thu, 28 Apr 2011 21:56:47 +0200
Thanks to all who gave me info on this tube 73's, Evert PA2KW --Oorspronkelijk bericht-- Van: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] Namens Evert Bakker (PA2KW) Verzonden: z
/archives//html/Amps/2011-04/msg00568.html (7,774 bytes)

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