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301. [Amps] SB-200 Problem (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Thu, 7 Mar 2002 15:13:36 -0800; It takes c. 3kV to gas-check a 572B. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00145.html (7,383 bytes)
302. [Amps] al-1200 question (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Thu, 7 Mar 2002 15:13:38 -0800; For 40m daytime group operation in CA/AZ/NV/OR/UT, the king of antennas is a dipole at c. 30'. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00146.html (8,288 bytes)
303. [Amps] Source for 220V cords (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Thu, 7 Mar 2002 15:20:16 -0800; Do this and the chassis is not returned to mains neutral/gnd at the breaker box. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00147.html (8,831 bytes)
304. [Amps] Source for 220V cords (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 04:02:16 -0800; think connection from as an ? True. Gary. Also, green/ground and white/neutral are the same point in the breaker box. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00153.html (10,093 bytes)
305. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 08:40:55 -0800; ? A work-around is to set the transceiver's power output control so that the 600mA per tube current rating is not exceeded for the band in use. ? The 425 I worked on exhibited - with a Funderberg hi; /archives//html/Amps/2002-03/msg00168.html (9,479 bytes)
306. [Amps] al-1200 question (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 09:40:16 -0800; ? This is clearly a nasty, personal attack on Towertalk's moderator. Shame on you! cheerz, Rich - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00174.html (8,329 bytes)
307. [Amps] Source for 220V cords (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 09:40:17 -0800; ? In my mains breaker box gnd & neutral connect to the same bus. ? G.F.I. circuit breakers are not only sensitive to as little as 1mA of current, they are also sensitive to RF. - R. L. Measures, a.k; /archives//html/Amps/2002-03/msg00175.html (8,554 bytes)
308. [Amps] Source for 220V cords --Thanks (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 09:40:21 -0800; ? ... and they usually help to reduce TVI too because when the amplifier makes mo' RF, the 240v switches off. cheerz, Randy - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measure; /archives//html/Amps/2002-03/msg00176.html (7,294 bytes)
309. [Amps] AL-1200 Question (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 09:40:22 -0800; ? As I understand it, in Canada and Mexico, the power limit on 30m is 1500W. Also, in Mexico, SSB is legal on 30m. ? There are apparently some contestors and DXers who concur with Niccolo Machiavell; /archives//html/Amps/2002-03/msg00177.html (8,523 bytes)
310. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 10:27:33 -0800; To: <amps@contesting.com> ? agreed ? The whatever on the anode is 8kV positive or negative. This is apparently sufficient to attract or repell the negatively charged gold melt-balls - and change cur; /archives//html/Amps/2002-03/msg00182.html (8,979 bytes)
311. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Fri, 8 Mar 2002 15:08:17 -0800; The grid is at 0v. The anode is at +8kV. The meltballs go to the anode. When the polarity is reversed, the meltballs seemingly head toward the base because current decreases. cheerz, Steve - R. L. M; /archives//html/Amps/2002-03/msg00196.html (8,658 bytes)
312. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sat, 9 Mar 2002 07:02:50 -0800; To: <amps@contesting.com> ? RR ? With pos. 5kV on the anode, some of the meltballs apparently stick to the anode insulator where they form a leakage path. With neg 5kV on the anode, thanks to like c; /archives//html/Amps/2002-03/msg00201.html (10,572 bytes)
313. [Amps] BTI 3-1000Z linear repair (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sat, 9 Mar 2002 15:56:11 -0800; The two most common failures in the BTI amplifier are leaky filter capacitors and a toasted bandswitch. Digikey now carries Panasonic 500V electrolytic filter capacitors. Multitech Corp. makes replac; /archives//html/Amps/2002-03/msg00204.html (6,647 bytes)
314. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sun, 10 Mar 2002 05:03:30 -0800; To: <amps@contesting.com> ... ... ... ? My guess is that gold plating is used to reduce primary electron emission from the grid because the gold atom's outer electron shell is full. Thus, it does no; /archives//html/Amps/2002-03/msg00208.html (9,460 bytes)
315. [Amps] What is needed to drive a pair of 4-1000 tubes (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sun, 10 Mar 2002 11:24:03 -0800; Grid-driven in AB1, c. 100w with a 200? grid swamper. Cathode-driven in AB2, c. 350w - - depending on anode VDC. An 8170 or an 8171 in AB1 costs about the same, takes up half as much chassis space,; /archives//html/Amps/2002-03/msg00215.html (6,991 bytes)
316. [Amps] Noisey Transformer (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Sun, 10 Mar 2002 14:47:05 -0800; I would try potting the windings in laminating resin and varnishing the laminations. Details are on my Web site. cheers, Ed - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measure; /archives//html/Amps/2002-03/msg00219.html (6,805 bytes)
317. [Amps] Air Chimneys for 3-500Z and Anode Dissipation (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Mon, 11 Mar 2002 05:58:39 -0800; fans) to fans in ? Orient the two sockets with the filament pins facing each other, as Heath did in the SB-220, and one fan will cool all 4 filament-pins. If it's a 15cm fan and a split chassis is u; /archives//html/Amps/2002-03/msg00228.html (9,034 bytes)
318. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Mon, 11 Mar 2002 05:58:42 -0800; To: <amps@contesting.com> To: <amps@contesting.com> ? Gold atoms seem to act like bits of paper when they are brought near an electrostatically charged plastic rod. Maybe it's esoteric science? The; /archives//html/Amps/2002-03/msg00229.html (10,233 bytes)
319. [Amps] Re: [CQ-Contest] Italian power explained - (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Mon, 11 Mar 2002 14:08:38 -0800; ? Beautifully built, however it,: 1. is not neutralized. 2, does not have the variable vacuum caps vertically mounted as is recommended. 3. uses paralleled DC blocker caps (makes an addiitional VHF; /archives//html/Amps/2002-03/msg00246.html (8,961 bytes)
320. [Amps] TenTec Titan 425 (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Mon, 11 Mar 2002 14:08:41 -0800; ? Correct. Sorry for the technoblather. ? me too. tnx, Mike - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-03/msg00247.html (7,955 bytes)

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