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361. [AMPS] Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 6 Mar 2000 12:15:24 -0000; I always understood the idea in these contests WAS to splatter, as that helped keep the frequency. Like having key clicks on CW. However, the rule is: 'If I interfere with your reception, it's becaus; /archives//html/Amps/2000-03/msg00231.html (8,661 bytes)
362. [AMPS] Network analysis of suppressors (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 6 Mar 2000 17:46:38 -0000; I thought the primary advantage was that you could have it get hotter without the reliability problems of a carbon or MOF resistor! Of course, if you can guarantee that the layout and lead lengths en; /archives//html/Amps/2000-03/msg00254.html (10,255 bytes)
363. [AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 08:52:01 -0000; That depends on whether or not your K-factor is the Linville stability factor or the Stern stability factor. Since K tends to be used for both, you need to define which. 73 Peter G3RZP -- FAQ on WWW:; /archives//html/Amps/2000-03/msg00337.html (8,823 bytes)
364. [AMPS] Manometer (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:02:22 -0000; Bob, Use a piece of clear plastic tubing bent into a U shape. Or a piece of glass tube. I actually use the clear plastic tube that I use for siphoning the home brew beer for bottling - just put some; /archives//html/Amps/2000-03/msg00338.html (7,729 bytes)
365. [AMPS] Re: Re: Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:06:27 -0000; When I worked K1AR, he was strong and clean. That was both 20 and 40. With different operators, and about 24 hours between QSOs. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html S; /archives//html/Amps/2000-03/msg00342.html (8,153 bytes)
366. [AMPS] PEP and IMD (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:10:27 -0000; worse, then It's the gain compression is 1dB. So it's not really nitpicking at all. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrativ; /archives//html/Amps/2000-03/msg00343.html (7,043 bytes)
367. [AMPS] Network analysis of suppressors (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:14:45 -0000; Isn't that what you'd expect? Skin effect will lead to Q going up inversely proportional to square root of frequency. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions:; /archives//html/Amps/2000-03/msg00344.html (8,604 bytes)
368. [AMPS] Power Handling of Resistors (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:21:12 -0000; Is it not the product of watts and seconds that blows the resistor? So the shorter the 'spike', the higher the power must be? On that basis, where does that much power come from? Comparison with ligh; /archives//html/Amps/2000-03/msg00346.html (9,343 bytes)
369. [AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 09:40:29 -0000; least 50%. I feel you're right there, Phil. My 2 times 4-250A amp is the chassis from a Naval tx. The parasitic suppressors are 33 ohm glo-bar style resistors rated at 20 watts, and the coils are 14S; /archives//html/Amps/2000-03/msg00347.html (9,319 bytes)
370. [AMPS] Re: Re: Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 11:57:41 -0000; around +30dbm Receiver intercept point isn't everything. Unless the phase noise limited dynamic range and the intermodulation limited dynamic range are approximately equal, you can't get optimum perf; /archives//html/Amps/2000-03/msg00350.html (9,303 bytes)
371. [AMPS] SSB interference (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 14:15:04 -0000; There is an ITU-R Recommendation, SM443, on measuring bandwidth at monitoring stations. The professional way tends to go for measuring the 20dB bandwidth where possible. Direct Sequence Spread Spectr; /archives//html/Amps/2000-03/msg00372.html (8,120 bytes)
372. [AMPS] Power Handling of Resistors (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 16:00:38 -0000; application controlled by avalanch which other tank Dave, are you saying that the amount of energy involved in 160 watts for 500msec is not the same as 1600watts for 50msec or 16kW for 5msec? Or am I; /archives//html/Amps/2000-03/msg00381.html (9,680 bytes)
373. [AMPS] Re: Poor Science (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 17:32:47 -0000; to Trouble is, Steve, you're talking (writing?) in English English. American English is at times subtly different in the meaning of words. Adds to the fun here, doesn't it? 73 Peter G3RZP -- FAQ on W; /archives//html/Amps/2000-03/msg00392.html (8,911 bytes)
374. [AMPS] Re: Re: Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 7 Mar 2000 17:48:32 -0000; I reiterate that when I heard K1AR, both on 20 and 40, the signal was clean. Some guys did appear to have too much speech processing, so the signal was clean, but distorted. As Peter says, in many ca; /archives//html/Amps/2000-03/msg00394.html (8,979 bytes)
375. [AMPS] RE: Re: Re: Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 8 Mar 2000 09:23:49 -0000; Jan asks; processing.How can a signal be clean and distorted at the same time? By 'clean', I mean not excessively wide - or, if you like, the occupied bandwidth is correct for the voice modulated sin; /archives//html/Amps/2000-03/msg00447.html (8,059 bytes)
376. [AMPS] VHF visitation (was power handling...) (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 8 Mar 2000 09:44:26 -0000; The phenomena known sometimes as 'barnacles' is also called 'flash arc'. It was described in a paper by B. S. Gossling of the General Electric Company Research Laboratory at Wembley, England in the J; /archives//html/Amps/2000-03/msg00449.html (8,923 bytes)
377. [AMPS] RE: Re: Re: Mission Impossible (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 8 Mar 2000 14:03:37 -0000; guys! Seems we merely have different definitions of what is meant by a 'clean' signal: just that Tom and I appear to apply the same meaning. Chacun a son gout. 73 Peter G3RZP -- FAQ on WWW: http://ww; /archives//html/Amps/2000-03/msg00463.html (7,494 bytes)
378. [AMPS] VHF visitation (was power handling...) (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 9 Mar 2000 08:35:56 -0000; According to Gossling's paper, 'tree like markings' appear, but they can be quite small. He goes on:'If the discharge current passes through two limbs of a filament placed side by side, these are oft; /archives//html/Amps/2000-03/msg00495.html (8,561 bytes)
379. [AMPS] Rocky Point effects (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 9 Mar 2000 09:07:56 -0000; Yes ..........me! 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@conte; /archives//html/Amps/2000-03/msg00497.html (8,484 bytes)
380. [AMPS] Rocky Point effects (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 13 Mar 2000 10:42:38 -0000; Rich, What is your definition of resonance in this context? For a parallel tuned circuit, there are five definitions that I know of, all giving different answers, so this isn't meant to be a trick qu; /archives//html/Amps/2000-03/msg00617.html (8,445 bytes)

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