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161. [Amps] Tube limits & Beetles (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 13:00:03 -0400; Well, Ive seen Beetles do 200 mph in the 1/4 mile at the drag strip. And other souped up models do 100 on the street. There used to be all sorts of performance kits available back in the 60's & 70's.; /archives//html/Amps/2007-09/msg00287.html (15,853 bytes)
162. Re: [Amps] 6 mtrs: (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 15:20:08 -0400; I question the high output power also, having built many amps and owned a number using 572Bs. The pair of tubes are rated 320W dissipation and at 2.4 kV should produce about 640W PEP output power. To; /archives//html/Amps/2007-09/msg00292.html (8,842 bytes)
163. Re: [Amps] 6 mtrs: (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 16:01:49 -0400; That sounds like a good career path for you to pursue. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amp; /archives//html/Amps/2007-09/msg00294.html (9,976 bytes)
164. [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 18:10:32 -0400; As Ive already mentioned I do my IMD tests at 600W after tuning up at around 750W or wherever the tubes "land" with rated Ig or a bit less. Typical for those 3 points is in the -32 to -37 dB range. L; /archives//html/Amps/2007-09/msg00301.html (11,422 bytes)
165. [Amps] Yawn (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 18:20:05 -0400; Lou, neither of us has ever said or even hinted that there are not better tubes for 6M. What the tiny minority of naysayers miss entirely is that the SB-200 is the best bang for the buck on the plane; /archives//html/Amps/2007-09/msg00302.html (7,520 bytes)
166. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 20:05:51 -0400; having 1200W anode dissipation. You must have a very different AL-1200. 73, Steve WB2WIK/6 Sorry, I meant the AL-572 which you could just as easily have found by going a bit further on their web sit; /archives//html/Amps/2007-09/msg00304.html (9,611 bytes)
167. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 20:51:58 -0400; You are correct, my mistake. Carl _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-09/msg00309.html (7,647 bytes)
168. Re: [Amps] 6 mtrs (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 20:59:05 -0400; Hmmm there are 2 tubes, 2 variables, a coil, a few small items and a lot of empty space. Are you having a problem envisioning that? Do you demand a look at the inside of a VHF brick also? Carl KM1H _; /archives//html/Amps/2007-09/msg00310.html (7,954 bytes)
169. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 25 Sep 2007 22:03:49 -0400; Youre late Joe, I was already reminded of that goof by others hours ago. I guess that you failed to read that, several times I said I run IMD tests at 600W. This will be the 3rd or 4th time Ive repea; /archives//html/Amps/2007-09/msg00312.html (9,121 bytes)
170. Re: [Amps] 6 metres (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 09:41:09 -0400; A good LPF at the input and output of the amp does wonders. B&W and ICE make good them but use the QRO versions at the input also, the specs are better. I suppose one could also install a coax stub i; /archives//html/Amps/2007-09/msg00327.html (7,674 bytes)
171. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 10:29:33 -0400; Thats a bunch of BS as usual from you. Any decent commercial amp will do more than its advertised at. Its called overhead and allows for tube aging. Using you distorted logic (pun intended) an AL-150; /archives//html/Amps/2007-09/msg00332.html (9,003 bytes)
172. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 12:00:14 -0400; I see absolutely no reason for 300-400 hp in a grocery getter. The average driver is totally clueless how to use it anyway. Similar to the average ham being cluless how to use an amp except get the n; /archives//html/Amps/2007-09/msg00338.html (9,688 bytes)
173. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 18:48:28 -0400; They also told Admiral Rickover that it was impossible to build a nuclear sub. "They" being the experts that were all wise. And never forget that the worlds best engineers designed the Titanic and 2; /archives//html/Amps/2007-09/msg00343.html (9,524 bytes)
174. Re: [Amps] New SB-200 owner (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 18:55:57 -0400; All the info needed is available in a couple of ham level handbooks and a tube spec sheet. If someone has a license that didnt come out of a box it shouldnt be hard to get started. THEN, when or if y; /archives//html/Amps/2007-09/msg00344.html (7,582 bytes)
175. Re: [Amps] Another SB200 (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 20:24:02 -0400; The meter movement is 200ua and is identical to both meters in the SB-220. The HM-102 meter also has the same rating. There are at least 3 different meter manufacturers and swapping dial scale often; /archives//html/Amps/2007-09/msg00348.html (8,490 bytes)
176. [Amps] Amps Digest, Vol 57, Issue 52 (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 26 Sep 2007 22:27:08 -0400; What impresses me is that some supposedly educated people have such poor reading comprehension. Maybe it is a form of ADD. Try reading 10 or 20 times all the posts in the thread and associated ones; /archives//html/Amps/2007-09/msg00352.html (9,621 bytes)
177. Re: [Amps] IMD (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 27 Sep 2007 07:31:42 -0400; Yes, distortion will degrade but is it still acceptable? Remember the old "Garbage in garbage out" principle that was initially referring to very early computer programming. If a tube degrades by "n; /archives//html/Amps/2007-09/msg00374.html (10,754 bytes)
178. Re: [Amps] New SB-200 owner (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 27 Sep 2007 07:42:07 -0400; Ive found absolutely no benefit to a Pi-L in a monoband 6M amp Peter. Ive also not tested or experienced a commercial amp that includes 6M, or even a xcvr in some cases, that cannot benefit from a go; /archives//html/Amps/2007-09/msg00375.html (9,970 bytes)
179. Re: [Amps] Amplifier Linearity (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 27 Sep 2007 07:59:51 -0400; A long accepted rule of thumb to approximate the sweet spot for linearity is to load to maximum CW output and then increase loading (less C) until the output decreases 3-5%. Having a scope is nice if; /archives//html/Amps/2007-09/msg00378.html (9,824 bytes)
180. Re: [Amps] New SB-200 owner (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 27 Sep 2007 08:05:45 -0400; Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-09/msg00380.html (9,748 bytes)

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