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81. [AMPS] Manometer (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 7 Mar 2000 04:52:46 -0500; I just use clear plastic tubing, water, and a ruler. Mark WB8JKR On Mon, 06 Mar 2000 20:43:02 -0800 Bob Marston <k1ta@contesting.com> writes: _________________________________________________________; /archives//html/Amps/2000-03/msg00348.html (8,677 bytes)
82. [AMPS] Re: Power Handling of Resistors (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 10 Mar 2000 05:46:54 -0500; Jon, I THINK we may be getting a little off the path here. First, 1500 watts through something isn't the same as 1500 watts TO something. You could run 1500 watts of power through a 1 foot length of; /archives//html/Amps/2000-03/msg00531.html (8,635 bytes)
83. [AMPS] L4-B Power Xfmr (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 8 Feb 2000 21:13:14 -0500; It has 4 windings. For 240 jumper: Grn to Yel/Grn Yel to Brn For 120 jumper: Blk/Grn to Grn Yel/Grn to Blue to Yel Brn to Brn/Blk Mark WB8JKR On Tue, 08 Feb 2000 16:56:14 -0800 Ed Diyorio <k6odv@club; /archives//html/Amps/2000-02/msg00139.html (8,156 bytes)
84. [AMPS] 811a to 572b conversion (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Wed, 9 Feb 2000 12:48:25 -0500; Zero Signal Anode Current Mark WB8JKR On Wed, 9 Feb 2000 09:23:19 -0700 "Lee Roberts" <ki7rw@scottsbluff.net> writes: To: <amps@contesting.com> _______________________________________________________; /archives//html/Amps/2000-02/msg00151.html (10,824 bytes)
85. [AMPS] Henry 2K-2 (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sat, 19 Feb 2000 05:09:49 -0500; Assuming a transformer turns ratio of 11, a 10 ohm 25 to 30 watt wirewound in the filament transformer primary would probably put you very close to the right voltage. Mark WB8JKR ____________________; /archives//html/Amps/2000-02/msg00351.html (7,250 bytes)
86. [AMPS] Filaments vs. Heater?? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 22 Feb 2000 16:36:34 -0500; A filament IS the cathode, a heater heats a cathode. Mark WB8JKR On Tue, 22 Feb 2000 10:44:03 -0500 Phil Levin W2GE <w2ge@home.com> writes: ___________________________________________________________; /archives//html/Amps/2000-02/msg00507.html (8,586 bytes)
87. [AMPS] 572-B Bias voltage, for todays tubes??? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Wed, 23 Feb 2000 19:36:59 -0500; Kurt, I really don't know what the present manufacturers recommend for the 572B, but I would think that 24 volts would almost cut it off. I know the Cetron tubes at about 2400 volts ran a operating b; /archives//html/Amps/2000-02/msg00533.html (8,657 bytes)
88. [AMPS] 3CX800 Filament voltage and current??? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 28 Feb 2000 16:08:39 -0500; 13.5 volts at 1.5 amps. Mark WB8JKR ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - ther; /archives//html/Amps/2000-02/msg00638.html (7,888 bytes)
89. R: [AMPS] broadband L at output (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 20 Jan 2000 19:56:51 -0500; 200 to 50 ohms high? Mark WB8JKR On Thu, 20 Jan 2000 21:49:50 +0100 "Maurizio Panicara" <i4jmy@iol.it> writes: ________________________________________________________________ YOU'RE PAYING TOO MUCH; /archives//html/Amps/2000-01/msg00440.html (9,926 bytes)
90. [AMPS] Clipperton-L input>150watts? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 28 Jan 2000 04:59:53 -0500; Probably run out the back of the cabinet onto the floor. Mark WB8JKR On Thu, 27 Jan 2000 19:15:50 -0800 Jonathan Kaplan <jonk@jskent.com> writes: _____________________________________________________; /archives//html/Amps/2000-01/msg00557.html (8,283 bytes)
91. [AMPS] KM1H (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 2 Dec 1999 16:35:29 -0500; If anyone's interested in knowing, Carl KM1H has been fairly active the last week on the Heathkit reflector. heathkit@qth.net Mark WB8JKR _____________________________________________________________; /archives//html/Amps/1999-12/msg00015.html (6,886 bytes)
92. [AMPS] command HF-2500 (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sat, 11 Dec 1999 18:06:39 -0500; Must be done at the factory. Mark WB8JKR ___________________________________________________________________ Why pay more to get Web access? Try Juno for FREE -- then it's just $9.95/month if you act; /archives//html/Amps/1999-12/msg00112.html (7,410 bytes)
93. [AMPS] 8877 bias (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sun, 19 Dec 1999 06:24:51 EST; Dick, if I remember right I'm using a 8.2 volt zener in mine and the idle current at 3500 volts is 180 ma. Mark WB8JKR ___________________________________________________________________ Why pay more; /archives//html/Amps/1999-12/msg00229.html (7,893 bytes)
94. [AMPS] knock a 3-500z short loose..? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 31 Dec 1999 16:14:46 EST; I have fixed that by discharging about a 1000 ufd cap charged to about 15-20 volts between the filament/grid. No promises! Mark WB8JKR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submission; /archives//html/Amps/1999-12/msg00439.html (8,449 bytes)
95. [AMPS] Capacitor series resonance (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 4 Nov 1999 04:55:07 -0500; One thing I was never quite sure of, are the lead lengths listed as "total" or individual? Mark WB8JKR On Thu, 04 Nov 1999 07:56:56 +0100 "Hans Goldschmidt" <sm5ki@algonet.se> writes: _______________; /archives//html/Amps/1999-11/msg00137.html (10,029 bytes)
96. [AMPS] A look underneath the Ugly amp. chassis. (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 4 Nov 1999 04:51:53 -0500; Are we sure the "rheostat" isn't in the HV metering divider to adjust the HV meter? That would make a damm site more sense. Mark WB8JKR _______________________________________________________________; /archives//html/Amps/1999-11/msg00138.html (10,198 bytes)
97. [AMPS] A look underneath the Ugly amp. chassis. (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 4 Nov 1999 11:26:26 -0500; I know Rich, I was talking about the one Jon claimed to have in his HV supply. Mark WB8JKR ___________________________________________________________________ Get the Internet just the way you want i; /archives//html/Amps/1999-11/msg00149.html (9,145 bytes)
98. [AMPS] Heath HA-10 Grid Bias and Resting Plate Current (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 5 Nov 1999 20:08:09 -0500; Hell no! a positive voltage to the cathode, or a negative to grids! Mark WB8JKR On Fri, 5 Nov 1999 18:05:23 -0500 "Mike Sawyer" <kc4slk@csrlink.net> writes: To: <amps@contesting.com> ________________; /archives//html/Amps/1999-11/msg00183.html (10,618 bytes)
99. [AMPS] Simulating center tap (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Tue, 16 Nov 1999 15:59:48 -0500; Vic, Using one side of the transformer for the cathode return will work, BUT you will introduce hum modulation on the amp output. Seems to me the usual way was to place two series connected 33 ohm 2; /archives//html/Amps/1999-11/msg00355.html (9,247 bytes)
100. [AMPS] Putting SB-200 on 160M- Correction (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 22 Nov 1999 15:55:26 -0500; Doug Demaw W1FB did a write up in QST in the early 80's on putting a SB-200 on 160, 80, and 40 meters. I have a copy of it around here somewhere, soon as I locate it I'll let you know. Mark WB8JKR On; /archives//html/Amps/1999-11/msg00438.html (10,201 bytes)

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