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References: [ +from:zedkay@telepak.net: 22 ]

Total 22 documents matching your query.

1. Re: [Amps] Non Detergent motor oil for dummy loads????? (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Fri, 05 Dec 2008 13:37:51 -0600
I bought a commercial 2500W load from a broadcast engineer. It was filled with automotive transmission fluid (red). Been working fine for over a year now. ;-) 73, Charles - K5ZK _____________________
/archives//html/Amps/2008-12/msg00106.html (7,257 bytes)

2. [Amps] Glitch Resistors - Again (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Wed, 24 Dec 2008 14:21:04 -0600
Hi, All I've been reviewing recent posts about glitch resistors. This past summer, I re-built the P/S to a Drake L7 amp. Re-built may be the wrong word because the only thing from the old supply that
/archives//html/Amps/2008-12/msg00322.html (7,653 bytes)

3. [Amps] 3CPX800A7 (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Wed, 11 Feb 2009 09:36:57 -0600
Need a little info guys: I found the data sheet for the 3CPX800A7 at the CPI/Eimac website, but this data sheet looks as though a few things have been left off. They say the tube is "intended for use
/archives//html/Amps/2009-02/msg00309.html (6,903 bytes)

4. [Amps] Drake L4 vs L7 P/S (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Wed, 04 Mar 2009 20:38:10 -0600
I'll bet multiple someones on this list know about this. Is the HV transformer used in the Drake L7 P/S the same one as used in the L4 P/S? I think it is, but does anyone know that for sure? 73, Char
/archives//html/Amps/2009-03/msg00127.html (6,327 bytes)

5. [Amps] Fans (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Thu, 05 Mar 2009 13:34:31 -0600
Hi, Gang I'm about to replace the fan in one of my amps. It is the standard sized "boxer fan" type, approx 4.5" square and 1.5" or so thick. Noise has always been an issue with these things, so I'd l
/archives//html/Amps/2009-03/msg00157.html (6,875 bytes)

6. Re: [Amps] Hotswitching issues 30s-1 (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sat, 20 Feb 2010 10:46:51 -0600
The MkV does. Look at Menu 7-4 and page 12 of the manual. Are you keying the 30S-1 directly from the rig? Don't think I would do that. The MkV can key your amp in one of two ways: (1) with a (relativ
/archives//html/Amps/2010-02/msg00590.html (7,824 bytes)

7. Re: [Amps] Amp keying delay selection (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sat, 20 Feb 2010 16:22:53 -0600
No, that's not right. Menu 7-5 sets the delay time from when you stop sending until the transceiver reverts back to receive. 73, Charles - K5ZK _______________________________________________ Amps ma
/archives//html/Amps/2010-02/msg00596.html (7,438 bytes)

8. [Amps] SR-410A (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sun, 23 Jan 2011 14:34:23 -0600
Hi, All I need a little help from you guys more familiar with commercial gear than I am. Recently I was given (most of) a Scientific Radio Systems SR-410A VHF power amp and power supply. The amp uses
/archives//html/Amps/2011-01/msg00238.html (7,422 bytes)

9. [Amps] Transformer question (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sat, 12 May 2012 16:58:43 -0500
Since 1985 I've been using a single-3-500Z HB amp. that uses in the HV PS a hermetically sealed Collins transformer that I'm told came out of the WW2-era 115V PS used to power an ART-13 transmitter.
/archives//html/Amps/2012-05/msg00273.html (7,275 bytes)

10. [Amps] High Voltage FWB Rectifiers (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Wed, 30 May 2012 21:31:04 -0500
I'm parting out a retired commercial FM transmitter that was given to me. It uses an 8877 in the final. In the power supply section it used a HV FWB rectifier module. The module is "house marked" and
/archives//html/Amps/2012-05/msg00359.html (6,872 bytes)

11. [Amps] 8877 date codes (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Thu, 14 Jun 2012 20:58:40 -0500
Is the date code on an 8877 a 4-digit number or a 5-digit number? Looking at one that has a small 5-digit number directly underneath the Eimac logo, and a larger 4-digit number elsewhere. Which one i
/archives//html/Amps/2012-06/msg00122.html (6,292 bytes)

12. Re: [Amps] Babying radios conclusion (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Fri, 15 Jun 2012 07:58:14 -0500
Hey, Charlie Relax. Kick back. Have a glass of wine while pondering the impermanence of all things. ;-) 73, Charles - K5ZK _______________________________________________ Amps mailing list Amps@conte
/archives//html/Amps/2012-06/msg00136.html (7,521 bytes)

13. [Amps] 8877 Plate Voltage (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sat, 30 Jun 2012 16:33:23 -0500
Starting a new project. I'm collecting parts for a new HB 8877 amp. One really nice part that I've recently acquired is a massive transformer for the HV supply. This transformer came out of a commerc
/archives//html/Amps/2012-06/msg00448.html (7,535 bytes)

14. [Amps] addendum to 8877 plate voltage post (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sat, 30 Jun 2012 16:36:32 -0500
Forgot to add this in my last post about high 8877 anode voltage: I've considered a "buck" transformer on the main transformer primary. I only need to "buck" the input a few volts (less than 20). Is
/archives//html/Amps/2012-06/msg00449.html (6,884 bytes)

15. Re: [Amps] 8877 Plate Voltage (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sun, 01 Jul 2012 09:10:21 -0500
Thanks, guys for all the responses. Consensus is: 4150VDC on the anode will not be a problem - key up, or key down. I have noted all the other precautions mentioned as well. 73, Charles - K5ZK ______
/archives//html/Amps/2012-07/msg00002.html (7,091 bytes)

16. [Amps] Jennings Vacuum Variables (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Wed, 25 Jul 2012 19:57:09 -0500
Can someone direct me to a website or other resource for data on older Jennings vacuum variable capacitors? The info I'm looking for would give the min. and max. capacitance value and the voltage rat
/archives//html/Amps/2012-07/msg00266.html (6,570 bytes)

17. [Amps] Filter Cap. question (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Sun, 05 Aug 2012 23:38:01 -0500
Working on a new amp project here. In the past, I've always used banks of 8 or 10 aluminum electrolytics for the HV PS filter, and they have always worked fine and lasted quite a long while. Lately,
/archives//html/Amps/2012-08/msg00113.html (6,821 bytes)

18. [Amps] Blower recommendations 8877 amp. (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Tue, 07 Aug 2012 14:52:44 -0500
I'm looking for specific blower recommendations for a HB 8877 amp. (blower maker and model #). Everyone says use a Papst blower because they are quieter. I use a Papst fan in my HB 2x3-500 amp. I hav
/archives//html/Amps/2012-08/msg00118.html (6,933 bytes)

19. [Amps] High Voltage Rectifiers on ebay (score: 1)
Author: Charles Bibb <zedkay@telepak.net>
Date: Fri, 17 Aug 2012 22:52:51 -0500
I've been seeing lots of high-voltage rectifiers on ebay lately. Specifically, I'm referring to the HVP2A-20, a single package rated at 2A and 20kv. These are posted by sellers in Hong Kong and China
/archives//html/Amps/2012-08/msg00303.html (6,678 bytes)

20. [Amps] YU209 (score: 1)
Author: Charles Bibb - K5ZK <zedkay@telepak.net>
Date: Tue, 06 Nov 2012 14:38:43 -0600
What is the difference between an 8877 / 3CX1500A7 / YU209? I'm told that the YU209 is a "commercial version" of the 8877, but what makes it different? Are the data sheets identical? If so, can someo
/archives//html/Amps/2012-11/msg00063.html (6,590 bytes)

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