Mail Archive Search: <+from:sub1@rogerhalstead.com>

Results:

References: [ +from:sub1@rogerhalstead.com: 1109 ]

Total 1109 documents matching your query.

321. Re: [Amps] HL-2K (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Fri, 28 Aug 2009 03:27:47 -0400; The manual should show you were for a 4 wire hook up the Red (110), Black(110), and White(neutral) connect. The Green (OR Bare) wire goes to chassis ground. Both the Red and Black wires are 120 to ne; /archives//html/Amps/2009-08/msg00572.html (8,342 bytes)
322. Re: [Amps] HL-2K (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Fri, 28 Aug 2009 16:18:00 -0400; I see some differences and I don't know if you meant 3 wire 120 or 3 wire 240. Here with 3 wire 120, neutral is 0 volts to ground. Actually there is a common point in the main breaker panel where the; /archives//html/Amps/2009-08/msg00581.html (12,234 bytes)
323. Re: [Amps] SB-220 bias question (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sat, 29 Aug 2009 18:56:14 -0400; Rephrasing: An amp should be tuned up AT the power level it's going to run, OR a "tune" switch that gives less plate voltage but the amp is tuned up at the same ratio of plate current to plate voltag; /archives//html/Amps/2009-08/msg00613.html (18,637 bytes)
324. Re: [Amps] Pair of SB-220s (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sun, 06 Sep 2009 02:10:12 -0400; Welll... If you look inside some of the higher powered 2-meter amps you will find a pair of Push Pull amps running in parallel . You may even find 4 P-P amps combined in there. SS HF amps are a whole; /archives//html/Amps/2009-09/msg00054.html (8,804 bytes)
325. Re: [Amps] Fixing scratched meters (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Tue, 08 Sep 2009 23:03:31 -0400; I see you've received a wide variety of procedures. Being a pilot and aircraft owner, I regularly get to clean some large and fairly expensive pieces of plastic. IOW, The windshields and side windows; /archives//html/Amps/2009-09/msg00115.html (10,574 bytes)
326. Re: [Amps] SB221 Low Power Help (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 09 Sep 2009 20:05:17 -0400; Pills? Are those for the headache when it doesn't work? 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listi; /archives//html/Amps/2009-09/msg00137.html (12,437 bytes)
327. Re: [Amps] Query about capacitor value (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Tue, 15 Sep 2009 12:03:02 -0400; Modulator?...modulator... Didn't they find something like that from the end of the Cretaceous era. Weren't they wiped out by a giant meteor or comet? <:-)) What on earth are you modulating? Home brew; /archives//html/Amps/2009-09/msg00198.html (11,704 bytes)
328. Re: [Amps] Silver Plating Tank Coil ?? (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sat, 19 Sep 2009 14:30:25 -0400; Looks pretty, Expensive, practical efficiency change-Nil. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/lis; /archives//html/Amps/2009-09/msg00247.html (7,115 bytes)
329. Re: [Amps] Silver Plating Tank Coil ?? (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sun, 20 Sep 2009 00:45:28 -0400; Gold beats them all when it comes to tarnish resistance, but it's very soft and malleable (Remember the ancients and gold leaf) and where it counts, resistivity, Gold has roughly 20-25% *higher* resi; /archives//html/Amps/2009-09/msg00251.html (8,684 bytes)
330. Re: [Amps] old mags (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sat, 26 Sep 2009 00:00:12 -0400; There are a few collectors out there. What do you have...IOW, what, how many, and what date ranges, and what State? I know we have at least two in our club who are collectors. Me, I do collect "handb; /archives//html/Amps/2009-09/msg00330.html (8,513 bytes)
331. Re: [Amps] AL-80B (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sat, 26 Sep 2009 12:53:31 -0400; I don't have one, but first thing I'd do is check the manual, then the schematic. It should show the 10 meter operation. Does the band switch even go to the 10m position? 73 Roger (K8RI) ____________; /archives//html/Amps/2009-09/msg00340.html (7,486 bytes)
332. Re: [Amps] amp advice from Alpha (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sun, 27 Sep 2009 19:59:54 -0400; Power Tube filaments and particularly the thoriated Tungsten have a very low resistance when cold. When power is applied abruptly as when the switch is turned on, the current is many times the operat; /archives//html/Amps/2009-09/msg00348.html (10,701 bytes)
333. [Amps] Best Linearity and 3rd order (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Mon, 28 Sep 2009 18:30:22 -0400; The "advice from Alpha" thread started me trying to remember how to get the best linearity and minimum 3rd order out. It also is pointedly reminding me how long it's been since I worked with some of; /archives//html/Amps/2009-09/msg00349.html (8,757 bytes)
334. Re: [Amps] FU728F Tube (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Tue, 29 Sep 2009 04:10:19 -0400; Where can I find the data sheets and where are these available for how much? 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest; /archives//html/Amps/2009-09/msg00353.html (7,738 bytes)
335. Re: [Amps] Dimished Tube Life (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Tue, 29 Sep 2009 14:22:19 -0400; IIRC the Alphas all use Oxide coated, Indirectly heated cathodes which are not nearly as susceptible to the inrush current problem. OTOH that type takes a typical 3 minutes (give or take) to warm up.; /archives//html/Amps/2009-09/msg00358.html (7,656 bytes)
336. Re: [Amps] FU728F Tube (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Tue, 29 Sep 2009 16:23:11 -0400; Google searches come up with lots of results, but after 2 hours I've still found none that give me the tube characteristics other than I know it's similar to a 4CX1500B with a different filament volt; /archives//html/Amps/2009-09/msg00359.html (9,133 bytes)
337. Re: [Amps] Parasitics can kill (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 30 Sep 2009 12:52:45 -0400; In the air and on top<:-)) It's a rather common method of shaping to core material for smaller aircraft and even prototyping. The most common is good old fashioned Styrofoam (TM), the blue building/c; /archives//html/Amps/2009-09/msg00373.html (9,606 bytes)
338. Re: [Amps] Alpha sold to RF Concepts (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 30 Sep 2009 21:35:44 -0400; I have a feeling you misread or misunderstood that post. <:-)) Adding fixed costs such as wages and bennies, it's hopeful they will have enough saves volume to show a profit, or make enough to pay ov; /archives//html/Amps/2009-09/msg00379.html (8,846 bytes)
339. Re: [Amps] OT: 160/75 Noise (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Fri, 02 Oct 2009 14:19:35 -0400; Any computer networks close by Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-10/msg00026.html (7,732 bytes)
340. [Amps] Vernier knobs? (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Fri, 02 Oct 2009 20:11:30 -0400; I've been looking for some vernier knobs for quite a while. They'd be akin to a turns counter, but without the handle or counter. Appearance would be a knob with calibrations and a skirt with calibra; /archives//html/Amps/2009-10/msg00031.html (8,211 bytes)

Current List: 321 - 340
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]