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261. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 09:52:59 -0500; OK. I should have read Rich's reply to you, Peter before sending mine agreeing with you. Wait a minute: I think hell just froze. Rich Measures and Tom Rauch agreed on something! GRIN! 73, Jon KE9NA; /archives//html/Amps/1999-06/msg00646.html (9,333 bytes)
262. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 09:53:52 -0500; How much does gain typically get reduced by? 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/ke9na "A life lived in fear is a life half lived; /archives//html/Amps/1999-06/msg00647.html (9,243 bytes)
263. [AMPS] Peak Power Meters - some more thoughts (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 15:45:30 -0500; Stepping aside from the enlightening discussion on tube gain vs. plate voltage, I want to come back to the original poster's question of why his peak power meter read differently at CW than at SSB. I; /archives//html/Amps/1999-06/msg00665.html (9,165 bytes)
264. [AMPS] Peak Power Meters - some more thoughts (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 17:10:29 -0500; Huh? Help me understand something here, Tom. Say I have a single tone at 5 dBm going into my amplifier. If I want to use two tones that give me the same composite input power, I use two tones that a; /archives//html/Amps/1999-06/msg00670.html (10,253 bytes)
265. [AMPS] Peak Power Meters - some more thoughts (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 17:30:58 -0500; OK, after looking at some textbooks, maybe I understand what you are saying. I think you are talking about peak power here and I am talking average power. For n incoherent tones: Pavg = n*Ptone whil; /archives//html/Amps/1999-06/msg00672.html (8,965 bytes)
266. [AMPS] Found the problem! (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 1999 23:08:01 -0500; To anyone who cares: I think I have found the problem with my amp and why the RF appears not to be getting to the tube! I installed Rich's grid fusing circuit on the control grid. Basically it consis; /archives//html/Amps/1999-06/msg00679.html (7,379 bytes)
267. [AMPS] Re: Another Doorknob Query (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 1999 23:09:42 -0500; Surpluss bandits has them but they are pricing. Fair Radio has them for relatively low cost. And Radio Recyclers in Milwaukee has boxes of transmitting micas all waiting for someone to rummage throu; /archives//html/Amps/1999-06/msg00680.html (7,817 bytes)
268. [AMPS] Peak Power Meters - some more thoughts (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 25 Jun 99 09:38:55 -0500; Correct, Peter! Back in my days of building feed-forward linears at Motorola, we would run 20 tones into our amps and test for an IMD level of minimum -60 dBc. Typically we were around -70. Modern a; /archives//html/Amps/1999-06/msg00694.html (9,960 bytes)
269. [AMPS] various (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 25 Jun 99 11:04:13 -0500; Fair Radio has some VERY nice ceramic RF doorknobs from Murata. They are either .02 or .002 uF (I forget) and are rated for 20 KV and 105 A. I use 1 for a blocking cap and 2 for HV bypass in my amp.; /archives//html/Amps/1999-06/msg00701.html (7,537 bytes)
270. [AMPS] Amp Photos (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Sat, 26 Jun 1999 23:38:11 -0500; See my amp at www.qsl.net/ke9na If the owner of the page u speak of wishes to add a link to my page, great! 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na <-- CHECK IT OUT! It's been upda; /archives//html/Amps/1999-06/msg00724.html (7,496 bytes)
271. [AMPS] KM1H wheres Carl (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 28 Jun 99 09:48:12 -0500; He was apparently kicked off the reflector because some people didn't like his attitude. It's a shame the thought and speech police got him. He was a good guy. Sure he pissed people off and was abus; /archives//html/Amps/1999-06/msg00738.html (8,204 bytes)
272. [AMPS] RJ1A relays (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 28 Jun 99 09:49:39 -0500; According to the folks at Fair Radio that I have talked to, their RJ-1As are now hi-potted. 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/k; /archives//html/Amps/1999-06/msg00739.html (7,370 bytes)
273. [AMPS] dBc and dBu ??? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 28 Jun 99 09:53:47 -0500; dBc means: DB in reference to a carrier. Typically this is used for IM measurements or harmonic measurements. If an amp has an IM level of -40 dBc, that means the IM products were 40 dB below the ca; /archives//html/Amps/1999-06/msg00740.html (7,253 bytes)
274. [AMPS] fine tuning amp pi-network (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 28 Jun 99 09:55:02 -0500; HI Lane, Here's how I would do it: First of all calculate the "ideal" (theoretical) tank component values based on the tube's optimum load impedance and 50 Ohms and an appropriate Q. The load impeda; /archives//html/Amps/1999-06/msg00741.html (7,942 bytes)
275. [AMPS] go figure/Murata (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 29 Jun 99 11:28:34 -0500; Fair Radio sells some large doorknobs for $17 each. The value is 0.001 uF and the voltage rating is 20KV. Murata makes these. On the cap below the 20KV is 105A. Perhaps I am wrong, but my guess is t; /archives//html/Amps/1999-06/msg00770.html (8,216 bytes)
276. [AMPS] go figure/Murata (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 29 Jun 99 14:06:16 -0500; Mine worked fine. Standard 1/4" bolts worked well. 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/ke9na "A life lived in fear is a life half; /archives//html/Amps/1999-06/msg00775.html (7,775 bytes)
277. [AMPS] go figure/Murata (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 29 Jun 99 15:27:27 -0500; OK. So what would the characters "105A" mean on a cap? 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/ke9na "A life lived in fear is a life; /archives//html/Amps/1999-06/msg00777.html (7,778 bytes)
278. R: [AMPS] Problem with Plate Choke (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 29 Jun 99 16:07:30 -0500; Maurizio, I couldn't have put it better myself. Excellent explanation! Christophe, if you want to buy a really good plate choke, Ameritron sells the chokes that go in their amplifiers. I don't know; /archives//html/Amps/1999-06/msg00782.html (7,766 bytes)
279. [AMPS] update on 13% eff 6M amp (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 31 May 1999 21:26:30 -0500; Hi Dick, There is a trick that some of us talked about a few months ago when I had the same problem with a 4-1K at high voltages on 10M. The tube does have a 7.6pf output capacitance. However, put t; /archives//html/Amps/1999-05/msg00000.html (9,154 bytes)
280. [AMPS] Purchase Recommendation? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Sun, 2 May 1999 23:22:20 -0500; Horsepucky. If the amplifier is working, don't mess with it. If it ain't broke; don't fix it! ALC is likely compatible. However, if you set your rigs max output for whatever is the max input of the; /archives//html/Amps/1999-05/msg00014.html (9,229 bytes)

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