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References: [ +from:n9bx@mchsi.com: 21 ]

Total 21 documents matching your query.

1. [Amps] Grid to Cathode Short (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Mon, 08 Jan 2007 04:49:44 -0600
Good Morning: I have a Tempo 2002 that uses the 3cx400/8874 tubes. All of a sudden I have an extremely high swr when the amplifier is on line, (in fact I can not put it on line.) Plate current is aro
/archives//html/Amps/2007-01/msg00075.html (6,673 bytes)

2. [Amps] 144 MHZ 8877 Amplifier (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Wed, 17 Jan 2007 21:35:31 -0600
Good Evening: I managed to acquire a Stripline 2 meter amplifier that uses an 8877 tube. Not sure when it was made but it appears to be OK and will try it out soon. All I have ever seen was a w6PO de
/archives//html/Amps/2007-01/msg00183.html (6,848 bytes)

3. [Amps] 2 meter 8877/3cx1500A7 (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Sun, 28 Jan 2007 20:33:58 -0600
Hello: Anyone Have a schmetic and plans for an 8877 Amp. with one or two tubes for TWO meters. I have the W6PO schematic but was wondering if there were More? 73 Bruce N9BX __________________________
/archives//html/Amps/2007-01/msg00308.html (7,293 bytes)

4. [Amps] 2 meter AMplifiers: (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Wed, 31 Jan 2007 05:20:48 -0600
While it looks like a toss up for the W6PO design and the K1AGB, with the PA3CSG coming in last but interesting. Now to start building....Unless someone wants to Trade? Brand New in Box 3cx1500A7/887
/archives//html/Amps/2007-01/msg00339.html (6,310 bytes)

5. [Amps] Copper or Silver Finger Contacts. (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Thu, 01 Feb 2007 19:56:59 -0600
I am building an 8877 amp for two meters and I would like to purchase Beryllium Copper Finger contacts. Who out there has some that they would be willing to sell? I just need enough to go around the
/archives//html/Amps/2007-02/msg00004.html (6,781 bytes)

6. [Amps] 3cx1500A7 (8877) Tubes for Trade (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Mon, 05 Mar 2007 17:56:47 -0600
Hi: I have two Brand New never used 3cx1500A7 Date code 1206 tubes. Granted they are national tubes but I will warranty them. I only want to trade for a new ICOM, Yaesu or any other 100 Watt Mobile r
/archives//html/Amps/2007-03/msg00103.html (8,414 bytes)

7. [Amps] Heathkit HL-2200 Diminished receive. (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Mon, 06 Aug 2007 04:48:32 -0500
Good Morning I have a Heath HL-2200 Amplifier that has a Amplifier in/out switch on it. When the Amplifier switch is out I can receive normally on my transceiver. But when I switch the Amplifier to t
/archives//html/Amps/2007-08/msg00012.html (6,685 bytes)

8. [Amps] Ameritron AL-1200 (score: 1)
Author: n9bx@mchsi.com
Date: Tue, 30 Oct 2007 17:03:14 +0000
Hi: I have a perculiar problem with the high voltage power supply on the AL-1200. Here is the sequence of events. I had the Amplifier on and it was idling and all of a sudden it crackled, stopped and
/archives//html/Amps/2007-10/msg00273.html (7,995 bytes)

9. [Amps] 2 Tubes in Parrallel: (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Thu, 08 Nov 2007 18:59:49 -0600
From What I read when you have two tubes in Parallel, Like two 3-500 the RL is 1/2 of what it would normally be if one tube was used. Since the good people at Ameritron have shown us the schematics f
/archives//html/Amps/2007-11/msg00118.html (7,209 bytes)

10. [Amps] Peter Dahl Transformer for Sale: (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Thu, 27 Dec 2007 16:33:07 -0600
New New New. Peter Dahl Hyperasil Transformer. Was going to use it to power up a 3cx3000 or 4cx5000 0r 4cx10000 but never started the project. This Transformer is rated at 0-210-240 with two secondar
/archives//html/Amps/2007-12/msg00262.html (6,772 bytes)

11. [Amps] High Voltage Transformer Manufactures. (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Wed, 16 Jan 2008 20:04:39 -0600
Any more out there now that Peter Dahl is out of Business? Bruce _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amp
/archives//html/Amps/2008-01/msg00115.html (6,101 bytes)

12. [Amps] Brand New 3-30PF Jennings CADC Vacuum Variable (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Sat, 08 Mar 2008 14:28:25 -0600
Hi: Brand New with Mounting Flanges CADC-30-15D1834 3-30pf 15/9KVp Date code 0734 Never been used still in original box. Will trade only for another Vacuum Variable 0-1500 or 0-2000 at 3KV or Greater
/archives//html/Amps/2008-03/msg00079.html (6,662 bytes)

13. Re: [Amps] Higher power transmitting tubes for "portable" amps. (score: 1)
Author: n9bx@mchsi.com
Date: Fri, 23 May 2008 12:13:39 +0000
Good Morning: Several amplifier designs for even a 20 lb 8877 Amplifier, which includes power supply have been developed over the years. Do a Google search for these amplifiers using an 8877 and you
/archives//html/Amps/2008-05/msg00171.html (9,407 bytes)

14. [Amps] AL-1500 al-1200 al-80 (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Mon, 30 Mar 2009 14:05:11 -0600
Hello It looks as if a three of these amps have the same power supply and Tank Circuits. If anyone has one of these to sell without the tubes, or even just a chassis send me an email off reflector. 7
/archives//html/Amps/2009-03/msg00540.html (6,849 bytes)

15. [Amps] RL Calculations (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Sun, 26 Apr 2009 07:14:14 -0500
Good Morning: In an Effort to calculate the RL of my two Tube 3cx1500A7, (8877 Amp) Usually the formula is Voltage on the Plate, (Ep), divided by 1.8 x Ip. My question is for this calculation do you
/archives//html/Amps/2009-04/msg00367.html (6,469 bytes)

16. [Amps] Peter Dahl Transformer for Sale (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Thu, 28 May 2009 10:01:28 -0500
Hello: I was moving some stuff around in the shack and fount a Peter Dahl Transformer. It is 38 lbs, and has both a 120/240 VAC input with a 0-2850 VAC output at 1 AMP. This would be perfect for an 8
/archives//html/Amps/2009-05/msg00242.html (7,880 bytes)

17. Re: [Amps] Peter Dahl Transformer for Sale (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Thu, 28 May 2009 10:23:10 -0500
The Transformer has been sold. It went Fast. Thank you Bruce N9BX 73 _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo
/archives//html/Amps/2009-05/msg00243.html (7,721 bytes)

18. Re: [Amps] Blower recommendations 8877 amp. (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Tue, 07 Aug 2012 19:08:23 -0500
Since you Asked Specifically for an 8877 Tube and a Part number for a Blower for that Tube, Here is My Recommendation and What I use on My W6PO Amplifier, That I use Key Down on EME with WSJT for a 6
/archives//html/Amps/2012-08/msg00122.html (9,818 bytes)

19. [Amps] Amplifier Fans: (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Sat, 25 Aug 2012 13:33:25 -0500
Hello: I have Built a W6PO amplifier in a 30 Inch rack cabinet, along with it's power supply,(pictures available upon request.) But I thought I would add some internal fans on the inside to help cool
/archives//html/Amps/2012-08/msg00412.html (6,895 bytes)

20. Re: [Amps] Amplifier Fans: (score: 1)
Author: Bruce Osterberg <n9bx@mchsi.com>
Date: Sat, 25 Aug 2012 15:38:15 -0500
Problem Solved: As you all have suggested it was the Switching Power Supply. It now has a Home in the Trash. Hooked my 12 Volts to the Main Astron Power supply and Noise is Gone. Thanks All Bruce N9B
/archives//html/Amps/2012-08/msg00417.html (8,195 bytes)

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