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References: [ +from:w7ry@centurytel.net: 284 ]

Total 284 documents matching your query.

61. Re: [Amps] plate voltage meter shunt (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 3 Nov 2012 22:51:14 -0700
As I remember... Henry (I know the Viewstar/B&W works this way) does that in some of their amps. I've had mixed results. As the bleeders heat up and the caps do too, the plate voltage meter drifts. A
/archives//html/Amps/2012-11/msg00035.html (10,424 bytes)

62. Re: [Amps] plate voltage meter shunt (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 3 Nov 2012 22:52:59 -0700
Yes they do. I used one in my Drake L4B. The stock string had an intermittently open resistor causing intermittent plate voltage reading. 73 Jim W7RY Mouser carries Ohmite flatpak HV resistors; Ive b
/archives//html/Amps/2012-11/msg00036.html (10,276 bytes)

63. Re: [Amps] Drake L4B and L7 QSK Board (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sun, 4 Nov 2012 13:48:36 -0800
internal wattmeter, but want QSK, the new board is the ideal ticket. Its a well designed board, I like it.... and it eliminates the mech clunker. Thanks! for the input, and another one for the outpu
/archives//html/Amps/2012-11/msg00056.html (8,228 bytes)

64. Re: [Amps] Ten Tec Titan 425 Options (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Fri, 9 Nov 2012 09:22:26 -0800
WOW! $800.00 for a set of caps? Sure doesn't seem very "square" to me. The plate voltage is less than 2500 volts on a Titan, and as I remember, there are 8 caps in it. A set of caps would set you bac
/archives//html/Amps/2012-11/msg00074.html (10,961 bytes)

65. [Amps] 3-500 Wanted (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Fri, 16 Nov 2012 10:01:39 -0800
Looking for a good 3-500 tube. Doesn't matter what brand. Thanks 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/
/archives//html/Amps/2012-11/msg00109.html (6,769 bytes)

66. Re: [Amps] QST Article 3-500 Tube Tester (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 19 Nov 2012 08:09:10 -0800
Found it thanks! April 2012. 73 Jim W7RY Can anyone refresh my memory on which QST issue the 3-500 tube tester was in? Ive been looking on the ARRL site and no luck. Thanks! 73 Jim W7RY _____________
/archives//html/Amps/2012-11/msg00131.html (7,998 bytes)

67. Re: [Amps] 8877 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 19 Nov 2012 08:04:01 -0800
You are incorrect. The have them open at Dayton. It is NOT and Eimac tube. It's an import. Probably from China. 73 Jim W7RY --Original Message-- From: Kevin Stover Sent: Sunday, November 18, 2012 6:3
/archives//html/Amps/2012-11/msg00132.html (12,080 bytes)

68. [Amps] Machlett or RF Parts 3-500 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 21 Nov 2012 07:17:09 -0800
Looking for opinions on Machlett or RF Parts 3-500 tubes? Which would you buy? The Machlett is slightly less expensive. I know they are made in the same factory. Thanks 73 Jim W7RY __________________
/archives//html/Amps/2012-11/msg00149.html (6,593 bytes)

69. [Amps] Ten-Tec Centurion Load Capacitance (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sun, 2 Dec 2012 21:52:43 -0800
Im working on a Ten-Tec Centurion for a customer. I noticed that the load capacitor padders are not hooked to the band switch correctly. The schematic depicts the way they are actually wired in an ac
/archives//html/Amps/2012-12/msg00008.html (7,989 bytes)

70. Re: [Amps] 8877 cathode impedance (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sun, 2 Dec 2012 21:56:46 -0800
Sounds like you need more like 6dB. That would be 88 watts of drive required. 73 Jim W7RY Hello all, Want to re-do the input matching of an old HB 8877 amp. What should I use for the cathode impedanc
/archives//html/Amps/2012-12/msg00009.html (8,562 bytes)

71. [Amps] Fw: Ten-Tec Centurion Load Capacitance (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Fri, 7 Dec 2012 22:25:28 -0800
Well the amp is back together. 40 meters will not load without the additional loading capacitance! The tank must not be right! Oh, one thing I did notice is that between 10 and 15 meters, you dont ne
/archives//html/Amps/2012-12/msg00034.html (8,821 bytes)

72. Re: [Amps] Fw: Ten-Tec Centurion Load Capacitance (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 8 Dec 2012 12:29:12 -0800
I dont understand your point? Yes, I can read the dial and see what the capacitor is showing.... 73 Jim W7RY --Original Message-- From: Rob Atkinson Sent: Saturday, December 08, 2012 11:46 AM To: Jim
/archives//html/Amps/2012-12/msg00040.html (8,973 bytes)

73. Re: [Amps] 6 meter 8877 amplifier (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 10 Dec 2012 17:33:41 -0800
See how I made my 10-160 amplifier at: http://s900.beta.photobucket.com/user/w7ry/library/8877%20Amplifier 73 Jim W7RY I am getting ready to start construction of a 8877 amplifier. Any good designs?
/archives//html/Amps/2012-12/msg00059.html (8,919 bytes)

74. Re: [Amps] Vacuum Relay (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 10 Dec 2012 17:39:11 -0800
What would a waveform monitor scope have to do with a timing issue with a vacuum relay? You cant use one to check the other. It takes a dual trace scope to check relay timing. 73 Jim W7RY ... for som
/archives//html/Amps/2012-12/msg00060.html (9,569 bytes)

75. Re: [Amps] 6 meter 8877 amplifier (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 12 Dec 2012 21:32:10 -0800
2. You do not need an input matching circuit. The 8877 input impedance is very close to 50 ohms anyway. If you insist on a perfect match, the antenna tuner in your transceiver can do the job. What a
/archives//html/Amps/2012-12/msg00065.html (11,490 bytes)

76. Re: [Amps] 6 meter 8877 amplifier (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Thu, 13 Dec 2012 06:53:43 -0800
You're right Bill. But it's poorly written./ 73 Jim W7RY 2. You do not need an input matching circuit. The 8877 input impedance is very close to 50 ohms anyway. If you insist on a perfect match, the
/archives//html/Amps/2012-12/msg00071.html (10,427 bytes)

77. Re: [Amps] hf-2500 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 19 Dec 2012 17:16:33 -0800
Bill We already had this discussion on here about a year ago. But I 'm going to repeat it. Alpha, Ameritron, Jerry K8RA, myself W7RY, and many others all use toroids with shorted turns on our "L" coi
/archives//html/Amps/2012-12/msg00125.html (9,327 bytes)

78. Re: [Amps] GS-35B Efficiency Varies with frequency? (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 22 Dec 2012 21:21:09 -0800
Very interesting Paul. The SB-220 tuned input is about 8 cable inches from the tubes. I may try to use 3 pieces of RG174. RG58 is a bit large and would not fit through the grommet in the chassis... I
/archives//html/Amps/2012-12/msg00143.html (12,760 bytes)

79. Re: [Amps] Fwd: Re: 3-500Z tubes ... (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 24 Dec 2012 15:59:36 -0800
I have newer (2-3 years old) Amperex tubes in an AL-82 and original (1970's) Amperex 3-500/8802 tubes in a Drake L4B. They typically put out 150 to 175 watts more for the equivalent drive of 100 watt
/archives//html/Amps/2012-12/msg00170.html (9,250 bytes)

80. Re: [Amps] Panel lettering (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sun, 30 Dec 2012 14:06:28 -0800
Lots of decal paper on EBay too. 73 Jim W7RY Hello Charles, I knew i bookmarked these for a good reason: http://www.hyaz.com/ http://www.decalpaper.com/default.asp I haven't tried them but they look
/archives//html/Amps/2012-12/msg00199.html (9,927 bytes)

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