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1. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "John Lyles" <jtml@losalamos.com>; Date: Tue, 7 Jun 2011 17:12:26 -0600; That's impressive, I wonder how far they are derated the 4CX5000A at 220 MHz, in that amplifier. I tried using the 4CX5000A in a 5 kW FM broadcast amplifier in the early 1980s and found it difficult,; /archives//html/Amps/2011-06/msg00093.html (7,488 bytes)
2. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 20:05:55 -0400; These are really on 200 MHz and the tube is a variation of the 4CX5000A made by eimac. They were from a reasearch MRI used with small animals I believe. They were from the University of Kentucky Med.; /archives//html/Amps/2011-06/msg00095.html (9,482 bytes)
3. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 20:20:08 -0400; I think the number on them is RS2014. 73 Bill wa4lav That's impressive, I wonder how far they are derated the 4CX5000A at 220 MHz, in that amplifier. I tried using the 4CX5000A in a 5 kW FM broadcast; /archives//html/Amps/2011-06/msg00096.html (8,960 bytes)
4. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Kevin Adam" <n9iww@msn.com>; Date: Tue, 7 Jun 2011 20:24:30 -0400; the last time I checked it won't go there according to Eimac you 4cx1500 to get there N9IWW I think the number on them is RS2014. 73 Bill wa4lav That's impressive, I wonder how far they are derated t; /archives//html/Amps/2011-06/msg00097.html (9,597 bytes)
5. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 20:49:32 -0400; Yes the amplifiers exist, what is interesting that there seems to be a number of different data sheets. Look at http://tube.be/4cx5000a.html as an example. http://www.rell.com/Pages/Product-Details.a; /archives//html/Amps/2011-06/msg00098.html (9,812 bytes)
6. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 21:42:02 -0400; Can anyone explain why there are so many different Max Frequency specifications for the 4CX5000A? bill ________________________________________ From: amps-bounces@contesting.com [amps-bounces@contest; /archives//html/Amps/2011-06/msg00099.html (10,730 bytes)
7. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 22:01:07 -0400; Another strange amplifier was a 200MHz pulsed triode amp. It had a variation of the 8877 with no fins on it. Strange beast. I called Ried Brandon at EIMAC to find out more about the tube. The anode w; /archives//html/Amps/2011-06/msg00100.html (10,686 bytes)
8. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Tue, 7 Jun 2011 22:32:02 -0400; Got quiet all of a sudden. Anyone have some ideas? 73 bill wa4lav Another strange amplifier was a 200MHz pulsed triode amp. It had a variation of the 8877 with no fins on it. Strange beast. I called; /archives//html/Amps/2011-06/msg00101.html (11,194 bytes)
9. Re: [Amps] Any designs for 4CX1000A on 2m (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 8 Jun 2011 10:58:11 -0400; Several tubes are built and specified for a specific customer or application and later find use elsewhere. There is no magic fence that says a particular tube will stop at 30, 40, 54, 108 MHz, etc. N; /archives//html/Amps/2011-06/msg00102.html (13,483 bytes)

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