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201. [AMPS] filament chokes (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Thu, 26 Jul 2001 08:28:54 -0500; I have used this method successfully many times when converting Henry RF generators for amateur use. The stock Henry choke does not cover 160-40 meters. A power resistor can be added in series with t; /archives//html/Amps/2001-07/msg00315.html (6,848 bytes)
202. [AMPS] 50~ vs 60~ ??? (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 2 Jun 2001 11:44:35 -0500; I suspect that the problem lives on, Ian. Most Henry models have tuned chokes in the power supply. Henry does offer many voltages and choice of 50-60 hz for most models, so drop-in replacement parts; /archives//html/Amps/2001-06/msg00013.html (8,605 bytes)
203. [AMPS] SICK ALPHA 77DX (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 12 Jun 2001 08:56:37 -0500; This is a common problem in old Alphas. F3 is a protection fuse in case the step-start relay fails to close in its allotted time. Check K2 and R2 for failure/burning GL! Phil, K5PC -- FAQ on WWW: htt; /archives//html/Amps/2001-06/msg00104.html (8,117 bytes)
204. [AMPS] SICK ALPHA 77DX (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 12 Jun 2001 10:34:47 -0500; Hi Paul, et al! The fuse F3 is a 2 amp SB for the 77DX and a 3 amp SB for the 77SX. Only the K2B contact is fused. The other side of the line (K2A and R1) have no fuse. If K2B welds closed, R1 will m; /archives//html/Amps/2001-06/msg00106.html (11,862 bytes)
205. [AMPS] Q and parasitics. (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 18 Jun 2001 10:36:45 -0500; Hi Peter, and fellow "Ampers." There was a construction article in the January 1974 issue of Ham Radio Magazine by John R. True, W4OQ entitled "Five-Band Kilowatt Amplifier" which used a single 4-100; /archives//html/Amps/2001-06/msg00139.html (7,886 bytes)
206. [AMPS] FT1000MP and MLA2500 (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Thu, 21 Jun 2001 17:52:47 -0500; Hook an ammeter across the phono jack marked "key" on the back of the MLA2500. This will key the amp and tell you the total current required . (There are two relays and a lamp that are all in paralle; /archives//html/Amps/2001-06/msg00242.html (7,695 bytes)
207. [AMPS] Capacitive Input Filter Cap (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sat, 23 Jun 2001 00:04:45 -0500; This is a multi-part message in MIME format. --=_NextPart_000_003A_01C0FB78.1C61E980 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable You can series/parallel; /archives//html/Amps/2001-06/msg00266.html (11,147 bytes)
208. [AMPS] amp control (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 26 Jun 2001 22:02:25 -0500; The new Alphas were not the first to offer sequenced keying. The 77 series of Alpha amps all featured "reverse keying." This technology has been around since the first high speed vacuum relays hit th; /archives//html/Amps/2001-06/msg00289.html (8,437 bytes)
209. [AMPS] tvi. (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Fri, 29 Jun 2001 16:43:04 -0500; Remote control trouble-shooting is tough, Carl! I suspect that the neutral lead on the newly-installed 220v line may be floating at the breaker box end,or the neutral bus is not strapped to the servi; /archives//html/Amps/2001-06/msg00333.html (8,061 bytes)
210. [AMPS] YC-156 Cathode/Filament Circuit (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 1 May 2001 09:11:36 -0500; ? shouldn't the drive go to the cathode in a cathode-driven amplifier? The cathode is connected internally to one side of the heater on a YC-156. (((73))) Phil, K5PC - Rich..., 805.386.3734, www.vcne; /archives//html/Amps/2001-05/msg00006.html (8,964 bytes)
211. [AMPS] YC-156 Cathode/Filament Circuit (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 1 May 2001 11:01:58 -0500; ? According to your statement, you are also driving the side if the heater that is Not connected to the cathode. That is S.O.P. for Ameritron, Creative Electronics, Bill Orr, and others, Rich. RF is; /archives//html/Amps/2001-05/msg00010.html (7,681 bytes)
212. [AMPS] Reliable source for YC-156"pulls" lab tested (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Wed, 2 May 2001 15:03:57 -0500; This is a multi-part message in MIME format. --=_NextPart_000_00D9_01C0D319.1CD46AA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I buy mine from: n9edx@; /archives//html/Amps/2001-05/msg00035.html (10,112 bytes)
213. [AMPS] T/R Help (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 6 May 2001 10:14:00 -0500; Buy or borrow a cheap multimeter and measure the current. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2001-05/msg00072.html (7,193 bytes)
214. [AMPS] OT: Elec. Motor basics 101???? (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 6 May 2001 15:10:09 -0500; What I know is ancient and could not even fill a thimble, Phil I do remember that a D.C. motor reaches maximum torque at zero rpm. That is why D.C. was chosen for locomotive engines, I guess. (((73); /archives//html/Amps/2001-05/msg00077.html (7,351 bytes)
215. [AMPS] YC-156 Cathode/Filament question (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 6 May 2001 15:43:49 -0500; That is true, Vern.Also it is highly recommended that the blower continue operation for several minutes after shut-down. Eimac also recommends only one heater on/off cycle per day for maximum tube l; /archives//html/Amps/2001-05/msg00080.html (8,278 bytes)
216. [AMPS] SB220 Question and Reflector update (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Sun, 6 May 2001 22:35:09 -0500; Do you want to check it, or align it? (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Prob; /archives//html/Amps/2001-05/msg00096.html (7,095 bytes)
217. [AMPS] YC-156 Cathode/Filament question (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 8 May 2001 10:22:21 -0500; EVERYTHING in CA hurts your wallet! ? The 8171 delivers more suds, is instant-on, and draws 0W on standby. The YC-156 requires no socket, no screen supply, cannot be over driven by any rice box, thu; /archives//html/Amps/2001-05/msg00121.html (8,563 bytes)
218. [AMPS] chimenys (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 8 May 2001 10:31:38 -0500; Yes...that would be the Eimac SK-406. Years ago, we builders on limited budgets used the glass Pyrex chimneys from Coleman lanterns that were available at local hardware stores everywhere. I don't k; /archives//html/Amps/2001-05/msg00122.html (7,123 bytes)
219. [AMPS] Re: YC156 heater/cathode question (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Tue, 8 May 2001 10:42:30 -0500; Thanks for the excellent info, Dave! I have printed out your post and added it to my tube data book. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting; /archives//html/Amps/2001-05/msg00123.html (9,236 bytes)
220. [AMPS] AL-80b PROBLEM - ANY IDEAS? (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Thu, 10 May 2001 16:37:55 -0500; Sounds like a sticking relay. Perhaps you hear the coil and some of the contacts drop out, but not all of them. GL! Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@cont; /archives//html/Amps/2001-05/msg00166.html (8,674 bytes)

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