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1. Re: [Amps] 12V IM3 (score: 1): Author: Ken K6MR <k6mr@outlook.com>; Date: Fri, 22 May 2015 10:28:00 -0700; As Paul said, it can be done. Manufacturers tout receiver figures that are nonsensical. They are real, they can be duplicated and proven, but the gain us little to nothing as long as the bands are; /archives//html/Amps/2015-05/msg00154.html (11,724 bytes)
2. Re: [Amps] 12V IM3 (score: 1): Author: Michael Clarson <wv2zow@gmail.com>; Date: Fri, 22 May 2015 13:57:13 -0400; Roger: While many of the technical points are valid, using Consumer Price Index (CPI) to compare "rig" prices is not realistic. Electronics, particularly consumer electronics is the outlier -- it doe; /archives//html/Amps/2015-05/msg00156.html (12,932 bytes)
3. Re: [Amps] 12V IM3 (score: 1): Author: Mike Waters <mikewate@gmail.com>; Date: Fri, 22 May 2015 13:23:14 -0500; Well stated. However, at the risk of sounding pessimistic, I think that's wishful thinking. What bugs me is that most (if not all) SS amps that are overdriven generate considerably more IMD than most; /archives//html/Amps/2015-05/msg00157.html (7,171 bytes)
4. Re: [Amps] 12V IM3 (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Fri, 22 May 2015 15:04:08 -0400; First, tube amplifiers (except for the sweep tube variants) have more headroom than a SS amp. Second, the tube amplifier saturates slowly while the gain curve of solid state devices have a very prono; /archives//html/Amps/2015-05/msg00158.html (10,181 bytes)
5. Re: [Amps] 12V IM3 (score: 1): Author: "Gary Schafer" <garyschafer@largeriver.net>; Date: Fri, 22 May 2015 14:26:58 -0500; When IM products are generated they are equally generated on both sides of the carrier frequency. as Joe says, just flip over to the opposite side band and you can immediately see what the level of t; /archives//html/Amps/2015-05/msg00159.html (8,408 bytes)
6. Re: [Amps] 12V IM3 (score: 1): Author: Mike Waters <mikewate@gmail.com>; Date: Fri, 22 May 2015 15:39:06 -0500; Thanks, Joe. Just how does one get "the ARRL"'s attention? I know a few things for sure: I was told by a respectable ham who works for the ARRL that the BOD (Board of Directors and some others there; /archives//html/Amps/2015-05/msg00160.html (8,554 bytes)
7. Re: [Amps] 12V IM3 (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Sat, 23 May 2015 06:46:10 +0800; You all live in areas of high ham population. Come to Western Australia where its hard enough hearing the the primary signals. You never hear any IMD products. The bands are clean and uncrowded here.; /archives//html/Amps/2015-05/msg00163.html (8,775 bytes)
8. Re: [Amps] 12V IM3 (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Fri, 22 May 2015 20:25:54 -0400; I know, which is one of the reasons I used it. The CPI (inflation) is a fictitious number just like unemployment. Electronics except for specialty items has benefited from scale. That Collins station; /archives//html/Amps/2015-05/msg00167.html (12,820 bytes)
9. Re: [Amps] 12V IM3 (score: 1): Author: "Leigh Turner" <invertech@frontierisp.net.au>; Date: Sat, 23 May 2015 10:03:32 +0930; Yes same here in Adelaide South Australia Alek; rarely do I hear or see on the Rx bandscope anybody's spurious IMD crud. We are indeed fortunate to be living in relatively uncrowded geographic region; /archives//html/Amps/2015-05/msg00168.html (9,249 bytes)
10. Re: [Amps] 12V IM3 (score: 1): Author: Manfred Mornhinweg <manfred@ludens.cl>; Date: Sat, 23 May 2015 16:21:12 +0000; Hi guys, it seems rather funny to me how you worry about rigs having only a -28dB specification for third IMD. Just come here to Chile, and listen in to the kind of signals that populate the 40 and 8; /archives//html/Amps/2015-05/msg00171.html (11,013 bytes)
11. Re: [Amps] 12V IM3 (score: 1): Author: Manfred Mornhinweg <manfred@ludens.cl>; Date: Sat, 23 May 2015 17:48:28 +0000; Repeatedly some of you have mentioned the supposed advantage of running a device at very much lower output power than its saturation level, to improve linearity. This is true only to a point, not all; /archives//html/Amps/2015-05/msg00172.html (10,429 bytes)
12. Re: [Amps] 12V IM3 (score: 1): Author: "Bob Burns W9BU" <w9bu_lists@rlburns.net>; Date: Sun, 24 May 2015 11:20:34 -0400; It starts with being a member of the ARRL and voting. Rather than debate the computer literacy of ARRL Directors, I'll just suggest that you contact your ARRL Director. Send him or her an email. All; /archives//html/Amps/2015-05/msg00186.html (9,234 bytes)

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