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61. Re: [Amps] transformers (score: 1): Author: "John Vickers" <wa4tt@nlamerica.com>; Date: Sun, 16 Jul 2006 18:10:26 -0400; Meant to type: 1/2 Kw in. sri _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg00456.html (8,068 bytes)
62. Re: [Amps] transformers (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 16 Jul 2006 18:55:46 -0400; This discussion doesn't seem to match what the SB 200 and SB 220 have produced since I built them. My SB 200 produces 700 Watts PEP, with about 50 Watts PEP drive, and my SB 220 produces about 1.5 KW; /archives//html/Amps/2006-07/msg00457.html (11,252 bytes)
63. Re: [Amps] Transformers (score: 1): Author: Gudguyham@aol.com; Date: Sun, 16 Jul 2006 19:17:19 EDT; Lou -- A question. I measured 400v-pk into 49.9-ohms @ 7MHz with a SB-220. How many PEP W is this? The way I figure it, that is 3200 watts at that point in time. Sounds pretty high to me. That is lik; /archives//html/Amps/2006-07/msg00458.html (8,112 bytes)
64. Re: [Amps] transformers (score: 1): Author: "Mike K6BR" <noddie@comcast.net>; Date: Sun, 16 Jul 2006 16:25:57 -0700; My SB-221 also does the same, about 1500watts PEP with 80 watts drive. I drive it with 60watts and the output is around 1300 watts or a little less depending on the band, just my observations. I thin; /archives//html/Amps/2006-07/msg00459.html (12,172 bytes)
65. Re: [Amps] Transformers (score: 1): Author: Gudguyham@aol.com; Date: Sun, 16 Jul 2006 19:53:53 EDT; The way I figure it, that is 3200 watts at that point in time. 3200 peak W or 3200W PEP? I'd say 3200 W peak _______________________________________________ Amps mailing list Amps@contesting.com htt; /archives//html/Amps/2006-07/msg00462.html (7,617 bytes)
66. Re: [Amps] transformers (score: 1): Author: "John Vickers" <wa4tt@nlamerica.com>; Date: Sun, 16 Jul 2006 19:54:23 -0400; How could these amps produce such output, if they I believe what they're designed to do-- and what they will actually do are entirely different. Kind'a like Man being designed for one YL but some can; /archives//html/Amps/2006-07/msg00463.html (8,466 bytes)
67. Re: [Amps] transformers (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Sun, 16 Jul 2006 17:23:45 -0700; That sounds more like it. Per the spec page of the SB-200 manual: SSB: 1200 W PEP Input CW: 1000 W Input 73 - Bob, N7XY _______________________________________________ Amps mailing list Amps@contesti; /archives//html/Amps/2006-07/msg00466.html (8,171 bytes)
68. Re: [Amps] transformers (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 16 Jul 2006 20:58:11 -0400; Mike: Your experience is exactly what I have seen in the many SB 220s that I have repaired and modified. I think to upgrade the blower is wise at these power levels, and I think you need to change ou; /archives//html/Amps/2006-07/msg00467.html (13,519 bytes)
69. Re: [Amps] transformers (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 16 Jul 2006 21:43:09 -0400; I've never seen a pair of 3-500Z's driven with 100 watts produce 1500W PEP **on an accurate power meter** with only 3000V on the anode. Neither did B&W. Neither did Viewstar. That's why they ran 350; /archives//html/Amps/2006-07/msg00471.html (9,566 bytes)
70. Re: [Amps] transformers (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 16 Jul 2006 22:10:15 -0400; Well, I stated what I have used for measurement, and I realize that the Bird and Nye Viking are not a Hewlett Packard. I can accept that both meters may be off by 10%, even though their accuracy is s; /archives//html/Amps/2006-07/msg00474.html (11,363 bytes)
71. Re: [Amps] transformers (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 16 Jul 2006 22:19:33 -0400; Tom, What do you think about the new MFJ 868 wattmeter that has the extra large 6-1/2" meter movement? How good is their TrueActive peak readong circuit, and how is the accuracy? Do they use another; /archives//html/Amps/2006-07/msg00475.html (11,054 bytes)
72. Re: [Amps] transformers (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 16 Jul 2006 09:43:13 -0700; Good point, Roy. Specsmanship is pretty close to bull____. . R L MEASURES, AG6K. 805-386-3734 r@somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://; /archives//html/Amps/2006-07/msg00476.html (9,691 bytes)
73. Re: [Amps] Transformers (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 16 Jul 2006 09:46:40 -0700; R L MEASURES, AG6K. 805-386-3734 r@somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg00477.html (9,842 bytes)
74. Re: [Amps] transformers (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 16 Jul 2006 16:10:14 -0700; Here on the West Coast, the punishment was thought to be walking the plank. cheers, John R L MEASURES, AG6K. 805-386-3734 r@somis.org _______________________________________________ Amps mailing list; /archives//html/Amps/2006-07/msg00478.html (11,196 bytes)
75. Re: [Amps] Transformers (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 16 Jul 2006 16:37:38 -0700; 3200 peak W or 3200W PEP? The oscilloscope and x100 probe were calibrated. R L MEASURES, AG6K. 805-386-3734 r@somis.org _______________________________________________ Amps mailing list Amps@contesti; /archives//html/Amps/2006-07/msg00479.html (8,573 bytes)
76. Re: [Amps] transformers (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Sun, 16 Jul 2006 21:31:16 -0500; Don't forget that Bird specs their accuracy at +- 5% of FULL scale. So with a 2500 watt slug that is a +- 125 watt error at anywhere on the scale. Also are you reading the power with a dummy load or; /archives//html/Amps/2006-07/msg00480.html (12,246 bytes)
77. Re: [Amps] transformers (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 16 Jul 2006 23:04:20 -0400; I test into my dummy load with a 50 resistor and 1 gallon of oil, which reads 1:1 SWR, or operate my 20 meter monoband yagi at such a frequency where SWR is also 1:1. The results are the same. 73 and; /archives//html/Amps/2006-07/msg00481.html (13,532 bytes)
78. Re: [Amps] transformers (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Mon, 17 Jul 2006 10:53:54 +0200 (CEST); common ways to read power. First, scopes have passband ripple. They are designed of good response to a stepped waveform, frequency response flatness (or lack of ripple) is secondary. Second, they are; /archives//html/Amps/2006-07/msg00484.html (8,747 bytes)
79. Re: [Amps] transformers (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 17 Jul 2006 06:00:31 -0400; One thing I have learned doing RF measurements almost every day for 30 years or more is RF measurements are tougher to do than most imagine. The accuracy of a Bird 43 meter, when properly calibrated; /archives//html/Amps/2006-07/msg00486.html (9,645 bytes)
80. Re: [Amps] transformers (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 17 Jul 2006 06:15:32 -0400; I haven't seen the meter. I do know several years ago I pushed them to buy a high accuracy Bird meter and matched slugs. I would certainly never guess at the absolute accuracy of anything leaving an; /archives//html/Amps/2006-07/msg00488.html (10,139 bytes)

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