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1. [Amps] 6M 8171 (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Mon Apr 21 16:40:09 2003; There was also a design for a six meter amp in one of the fairly recent ARRL handbook that used a compressable coil. The amp was tuned by turning a threaded rod which in turn would compress or expand; /archives//html/Amps/2003-04/msg00206.html (8,018 bytes)
2. [Amps] IM big amps (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Tue Mar 4 08:18:40 2003; Frank W2FCA; /archives//html/Amps/2003-03/msg00095.html (6,924 bytes)
3. [Amps] IM big amps (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Tue Mar 4 11:48:56 2003; I went back to the review and the ARRL report was talking best IMD at a level to drive a high gain amp such as an 8877 or 3CX800 so I figure they must have been talking maybe 50 - 70 watts out. The t; /archives//html/Amps/2003-03/msg00107.html (7,748 bytes)
4. [Amps] Why hasn't solid state replaced tubes? (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Wed Mar 5 09:32:20 2003; Maybe I'm cynical, but during some contests I could almost swear the technique was - 1. Set drive half of max. 2. Operate contest. 3. If somebody else gets +/- 5 kHz increase drive 1 notch. 4. Go to; /archives//html/Amps/2003-03/msg00170.html (9,604 bytes)
5. [Amps] MRF150 based 1500 watt amp design/cost (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Thu Mar 6 07:07:24 2003; The filters on the CCI page are rated at 300 watts. Are there any designs readily available that would handle 1500? Frank W2FCA; /archives//html/Amps/2003-03/msg00246.html (8,170 bytes)
6. [Amps] 4CX1600B vs. GU84B (score: 1): Author: W2fca at cs.com (W2fca@cs.com); Date: Sat Mar 8 09:59:53 2003; << Are they pin compatible? Can the GU84B be used in a 4CX1600B amp without (or with) modifications? It sems to me the military analog is the gu91b, which I've seen listed as a 4CX1600A. The anode is; /archives//html/Amps/2003-03/msg00334.html (6,824 bytes)
7. [Amps] Russian tubes GS35b et al. (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Tue Feb 4 12:31:35 2003; I would imagine that has something to do with military ratings. The same kind of ratings that had a US mil amplifier putting out 100 watts from a pair of 4CX250's. Frank W2FCA; /archives//html/Amps/2003-02/msg00076.html (7,575 bytes)
8. [Amps] None (score: 1): Author: w2fca at cs.com (w2fca@cs.com); Date: Thu Feb 20 12:08:26 2003; I made a chimney out of an Anchor Hocking microwaveable food storage bowl. It looks simliar to what your description of the lighting fixture sounds like. However, it passed the test John mentioned. P; /archives//html/Amps/2003-02/msg00394.html (7,159 bytes)
9. [Amps] 4CX250 IMD (score: 1): Author: w2fca@cs.com (w2fca@cs.com); Date: Tue, 02 Jul 2002 07:37:39 -0400; 'Scuse me, but what is a "high IMD sensitive VHF/UHF Rx"? I could see an Rx sensitive to high signal strength, but if somebody is transmitting at 144.200 and has output products at 144.210 isn't any; /archives//html/Amps/2002-07/msg00041.html (7,674 bytes)
10. [Amps] CTI follow up (score: 1): Author: w2fca@cs.com (w2fca@cs.com); Date: Tue, 25 Jun 2002 14:37:41 -0400; Interesting quote from a web site devoted to the joys of tubes - "Gas regulators do not have very good dynamic response. Due to the time lag of the heavy ions that make up the discharge, they have ti; /archives//html/Amps/2002-06/msg00217.html (7,919 bytes)
11. [Amps] Yaesu 2000 amplifier (score: 1): Author: w2fca@cs.com (w2fca@cs.com); Date: Wed, 29 May 2002 12:02:16 -0400; Maybe it's just me, but when I go there and try to get a file I get the dreaded "sever not found" message rank W2FCA; /archives//html/Amps/2002-05/msg00457.html (8,129 bytes)
12. [Amps] Air gap for 12000 volts? (score: 1): Author: w2fca@cs.com (w2fca@cs.com); Date: Mon, 22 Apr 2002 10:21:17 -0400; If you check www.cardwellcondenser.com you'll find specs for their caps at various voltages. They don't go to 12kv but they list a gap of .250 for 9kv. Frank W2FCA; /archives//html/Amps/2002-04/msg00513.html (7,179 bytes)

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