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201. [AMPS] HF Mobile Amps (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Wed, 11 Mar 98 15:21:33 -0600; Vectronics makes one as well. I think Pro-Tek is selling it. Looks like a nice little unit. 73, Jon KE9NA -- Jon Ogden jono@webspun.com www.qsl.net/ke9na "A life lived in fear is a life half lived."; /archives//html/Amps/1998-03/msg00186.html (7,491 bytes)
202. [AMPS] Legal Limit Tuners (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Wed, 11 Mar 98 16:17:16 -0600; Mitch, It's not a new tuner, but it is a good one...I have a Heath Roller Inductor Tuner. I can't remember the model number off the top of my head, but it's a very large tuner and has a built in bal; /archives//html/Amps/1998-03/msg00188.html (8,093 bytes)
203. [AMPS] HF Mobile Amps (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Thu, 12 Mar 98 08:55:15 -0600; Yesterday I said "Pro-Tek" sold a Vectronics amp. I was in error. It is Tech-America. Their part number is 940-0599. The price is $799. Tek-America's number is 1-800-877-0072. It looks like a pretty; /archives//html/Amps/1998-03/msg00206.html (7,676 bytes)
204. [AMPS] Thank You (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Thu, 12 Mar 98 16:52:19 -0600; I have used the MN-4 back in college at the University of Illinois' club station, W9YH. It is also a VERY good tuner. Although, if I remember correctly, it is not a roller inductor tuner and so tuni; /archives//html/Amps/1998-03/msg00216.html (7,996 bytes)
205. [AMPS] MFJ Tuners (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Thu, 12 Mar 98 23:58:04 -0600; IMHO, MFJ makes decent equipment, not great equipment. Some of the things I have seen made by them are really cheap. They fulfill a certain market in the Ham market place, but I wouldn't buy my KW t; /archives//html/Amps/1998-03/msg00225.html (8,099 bytes)
206. [AMPS] 4CX1000A advice?? (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 09:39:41 -0600; Ahem....Well said! :-) 73, Jon KE9NA -- Jon Ogden jono@webspun.com www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: am; /archives//html/Amps/1998-03/msg00238.html (8,650 bytes)
207. [AMPS] Thank You (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 09:48:02 -0600; If you have an old tube rig or a tube amp, then no, you really don't need a tuner. You just tune the output network to match the impedance of the load (antenna). However, if you have a solid state r; /archives//html/Amps/1998-03/msg00239.html (8,313 bytes)
208. [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 16:12:29 -0600; Well, the actual benefit is not as great as you would think or as to what people might have you believe. S-meters on a radio are calibrated in dB. If at 100 watts your signal is at S9, at 1000 Watts; /archives//html/Amps/1998-03/msg00247.html (9,229 bytes)
209. [AMPS] Thank You (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 17:37:49 -0600; Yes, I did get it. :-) That's why I agreed. However, some solid state rigs don't have auto-tuners or they are an expensive option. Then you are left with having to use an external tuner. Also, I jus; /archives//html/Amps/1998-03/msg00255.html (8,328 bytes)
210. [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 17:42:08 -0600; Oh sure. In a big pileup, yep it might. Again, the pileup is now the noise floor! So yes, it could help. As for the beam, I guess I didn't make myself clear. It would be better to buy a better beam; /archives//html/Amps/1998-03/msg00256.html (9,471 bytes)
211. [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 23:14:47 -0600; Think noise floor...What is the noise floor at the station to which you are transmitting? With a big pileup, it might be a S9 +10 dB noise floor. Then yes, the extra 500 watts would help. Yes, it ca; /archives//html/Amps/1998-03/msg00261.html (11,862 bytes)
212. Fwd: [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 13 Mar 98 23:19:46 -0600; My man! I've done the same thing you have. All the power in the world will not substitute for good operating skill and timing. It's like fishing. The guy with all the fancy lures might not catch a t; /archives//html/Amps/1998-03/msg00262.html (9,688 bytes)
213. [AMPS] Step Start for Ameritron AL-80A (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 14 Mar 98 10:14:18 -0600; I would think the clunk is the inrush relay kicking out after the initial time delay. 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on; /archives//html/Amps/1998-03/msg00273.html (8,452 bytes)
214. [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 14 Mar 98 11:54:22 -0600; No, it is not erroneous. This is from an engineering handbook. A 1.5:1 VSWR will reflect 4% of your power. You can calculate that. That 4% of power goes back down your coax where it weakens do to co; /archives//html/Amps/1998-03/msg00280.html (12,064 bytes)
215. [AMPS] Benefit (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 14 Mar 98 15:29:52 -0600; If I said that this is what happens I made typos. It's not what I meant. With each succeeding pass and through the coax, some of the power is transmitted to the load, some lost in the coax, some abs; /archives//html/Amps/1998-03/msg00288.html (8,534 bytes)
216. [AMPS] Re: 4-1000A Impedance Variations (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Mon, 23 Mar 98 22:30:48 -0600; It doesn't make any difference. The tuned input circuitry is supposed to match between 2 different impedances. 50 Ohms on the exciter side and whatever the tube impedance is on the other. For a 4-10; /archives//html/Amps/1998-03/msg00374.html (8,680 bytes)
217. [AMPS] Re: Drive Level in amplifiers (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Mon, 23 Mar 98 22:51:47 -0600; Again though, my point on matching network impedances still stands. If at a low drive level my tube impedance is say 150 Ohms and at high drive levels it drops to say 75 Ohms then a matching network; /archives//html/Amps/1998-03/msg00375.html (10,599 bytes)
218. [AMPS] Re: 4-1000A Impedance Variations (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Mon, 23 Mar 98 23:00:51 -0600; Rich, One thing I want to point out is that I got the idea of using the RX noise bridge from the paper that Jim Thomson sent to me. Again that was an article by Irvin M. Hoff, W6FFC that was publish; /archives//html/Amps/1998-03/msg00376.html (8,445 bytes)
219. [AMPS] Re: Drive Level in amplifiers (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Tue, 24 Mar 98 19:41:06 -0600; Dick, You make a lot of sense here. You're right now that I think about it. The whole conjugate match idea is based on linear amplifier designs. And for a class AB or B amp, you do not have a linear; /archives//html/Amps/1998-03/msg00396.html (11,222 bytes)
220. [AMPS] PT-1000-K1Mh (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Tue, 24 Mar 98 21:57:52 -0600; I don't think Rich has ever said that no amp will work without his supressors. But you do have to admit that they have helped some people cure their amplifier problems. I bought Rich's kit for my ho; /archives//html/Amps/1998-03/msg00399.html (11,234 bytes)

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