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Total 32 documents matching your query.

1. [Amps] bringing up my gu-84b amp (score: 1)
Author: "ka1mwp" <>
Date: Sun, 5 Mar 2006 16:54:35 -0500
So here I am tinkering around with a pretty much done deal home brew amp. Today I hooked up a variac to the HV transformer to bring this amp up slowly. Now I have questions since I popped a glitch re
/archives//html/Amps/2006-03/msg00098.html (7,764 bytes)

2. [Amps] PW Dahl (score: 1)
Author: "chuck" <>
Date: Sat, 26 Jan 2008 08:17:19 -0500
I heard today that Peter Dahl Passed away and his daughter was taking over the company. Anyone confirm this? Chuck -KA1MWP _______________________________________________ Amps mailing list Amps@conte
/archives//html/Amps/2008-01/msg00202.html (6,817 bytes)

3. [Amps] PIC processor inside HF amp (score: 1)
Author: "chuck" <>
Date: Wed, 30 Jan 2008 14:52:58 -0500
I'm thinking of putting a PIC inside my amp and having it run a LCD display out front. I've seen it done, but am curious about The types of interference I'd end up with. I have my enclosure separated
/archives//html/Amps/2008-01/msg00263.html (6,903 bytes)

4. [Amps] Magcap Transformers (score: 1)
Author: "chuck" <>
Date: Fri, 29 Feb 2008 07:54:54 -0500
Good Morning all, just to clear up some confusion, MagCap Engineering in Canton, will be making transformers for Harbach to PW Dahl's specs He had a TON of info over the years on amateur radio produc
/archives//html/Amps/2008-02/msg00216.html (7,985 bytes)

5. Re: [Amps] Bill Edwards K4BWC (score: 1)
Author: "ka1mwp" <>
Date: Sat, 22 Mar 2008 09:20:22 -0400
Its on the front page of his website... Gents, I thought his wife passed a couple of weeks ago. Are you sure that he passed also? Man, if that's true, I am sorry to hear that. 73... Bob de k2ki first
/archives//html/Amps/2008-03/msg00203.html (9,222 bytes)

6. [Amps] Thinking of selling or trading (score: 1)
Author: "chuck" <>
Date: Thu, 13 Nov 2008 08:51:40 -0500
Good day folks, Been thinking of selling or trading my homebuilt gu-84b amp I built a few years ago.. Maybe use the cash for a new project or! trade for a tl-922 that maybe needs work. The parts insi
/archives//html/Amps/2008-11/msg00149.html (7,231 bytes)

7. [Amps] magcap 2800v at 1.5amp ccs transformer for sale (score: 1)
Author: "ka1mwp" <>
Date: Sun, 7 Dec 2008 15:49:30 -0500
I took the HV TXfmr out of my gu-84b amp ( I was looking to trade this) but changed my mind, lowering the plate voltage And putting in a "tetrode board kit" Have the new transformer coming in a few w
/archives//html/Amps/2008-12/msg00149.html (6,834 bytes)

8. [Amps] SOLD!!! magcap 2800v at 1.5amp ccs transformer for sale, thanks (score: 1)
Author: "chuck" <>
Date: Tue, 9 Dec 2008 07:54:28 -0500
thanks to all who replied Chuck _______________________________________________ Amps mailing list
/archives//html/Amps/2008-12/msg00168.html (6,671 bytes)

9. Re: [Amps] Amps Digest, Vol 74, Issue 64 (score: 1)
Author: "chuck" <>
Date: Tue, 17 Feb 2009 15:07:01 -0500
Stop!!!!!!!!!!!!!!!!!! Send Amps mailing list submissions to To subscribe or unsubscribe via the World Wide Web, visit or, via em
/archives//html/Amps/2009-02/msg00534.html (25,693 bytes)

10. Re: [Amps] Amps Digest, Vol 74, Issue 64 (score: 1)
Author: "chuck" <>
Date: Wed, 18 Feb 2009 06:44:47 -0500
Good morning, and sorry for the "stop" thingy, I had gotten about 30-40 "Issue 64"s in my Inbox...and I figured it was happening to everyone... Ok, I'll stop now. Thanks. And keep building those HF A
/archives//html/Amps/2009-02/msg00544.html (7,358 bytes)

11. [Amps] equipment faceplates-stencil etc (score: 1)
Author: "chuck" <>
Date: Thu, 19 Feb 2009 10:55:27 -0500
In some of my equipemnt building, I always used the small lettering rub on's that folks use with thier hobbies. they are usually white or black, probably from 1/16" to 1/8" in height and all you do i
/archives//html/Amps/2009-02/msg00560.html (7,153 bytes)

12. [Amps] screen grid current question on gu-84b (score: 1)
Author: "ka1mwp" <>
Date: Sat, 18 Apr 2009 08:08:08 -0400
I assembled the amp over the last few months using the TETRODE boards. Info: plate voltage = 2350 Grid 1 -65v Grid 2 365v RF Input 50ohm to ground You can see the schematic at
/archives//html/Amps/2009-04/msg00164.html (7,587 bytes)

13. Re: [Amps] gu-84b negative grid current- followup (score: 1)
Author: "chuck" <>
Date: Mon, 20 Apr 2009 12:57:49 -0400
Well, I got to the bottom of the NEGATIVE grid current this weekend..I had posted a question here asking about why I was seeing this and was it normal. After more research into this, I redid all my t
/archives//html/Amps/2009-04/msg00171.html (7,527 bytes)

14. [Amps] tank calculations - MFJ analizer - resistor (score: 1)
Author: "chuck" <>
Date: Tue, 21 Apr 2009 10:04:43 -0400
ok, quick question...(it'll be a poll) DO I leave the tube connected to the tank circuit and put on a 1/2w resistor or disconnect the tube from the tank to do the sweeps for tuning calculations some
/archives//html/Amps/2009-04/msg00177.html (6,975 bytes)

15. [Amps] Bandswitch search (score: 1)
Author: "chuck" <>
Date: Wed, 22 Apr 2009 13:03:19 -0400
I'm looking for a new bandswitch, the model 88 I have only has one wafer and I need 2 now. who besides, RF parts and Surplus sales has these things? I can wait for a local flea but like to shop! I'm
/archives//html/Amps/2009-04/msg00201.html (7,064 bytes)

16. [Amps] Tank value problems and grid current (score: 1)
Author: "chuck" <>
Date: Tue, 5 May 2009 07:48:18 -0400
OK, so I had time last night to play more with my tank circuit. I'm having 2 problems I'm wanting to run by you reflector'ees :) I used several calculators to determine the inductance for the tank on
/archives//html/Amps/2009-05/msg00010.html (8,547 bytes)

17. Re: [Amps] Tank value problems and grid current (score: 1)
Author: "chuck" <>
Date: Tue, 5 May 2009 10:12:06 -0400
Herein lies some of my problem, I get different numbers with different calculators.. I would figure they would be close...of course, 970 to 1.2k isn't that far off BUT! some formula's want "Q"..I inp
/archives//html/Amps/2009-05/msg00013.html (10,679 bytes)

18. Re: [Amps] Tank value problems and grid current (score: 1)
Author: "chuck" <>
Date: Tue, 5 May 2009 11:49:32 -0400
OK, I stand corrected on the nomenclature I DID use the formula's and used C1, L1 and C2 I have the 500pf TUNE cap, 1000pf LOAD cap. plus I stuck in the 1000pf Door Knob cap with the LOAD cap.. I'll
/archives//html/Amps/2009-05/msg00016.html (7,894 bytes)

19. Re: [Amps] tuned tank circuits (score: 1)
Author: "chuck" <>
Date: Tue, 5 May 2009 12:33:31 -0400 here is one for ya! Chuck _______________________________________________ Amps mailing list
/archives//html/Amps/2009-05/msg00017.html (6,515 bytes)

20. [Amps] russian door knob caps for R Ftank circuit (score: 1)
Author: "chuck" <>
Date: Thu, 7 May 2009 07:14:18 -0400
I read thru about 6 months of backissues here but didn't see mention of the russian door knob caps that are always on ebay. Anyone know which ones and the markings on them are OK for hi current use?
/archives//html/Amps/2009-05/msg00027.html (7,581 bytes)

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