Mail Archive Search: <+from:wb8jkr@juno.com>

Results:

References: [ +from:wb8jkr@juno.com: 187 ]

Total 187 documents matching your query.

41. [AMPS] SB-220 (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Wed, 3 Oct 2001 11:33:44 -0400; On Ebay you should get 3 grand !! ;^( I wouldn't give more than $600.00 but its just my opinion. Mark WB8JKR On Wed, 3 Oct 2001 00:04:02 -0400 "J Kolin" <jkolin@worldnet.att.net> writes: ____________; /archives//html/Amps/2001-10/msg00039.html (8,194 bytes)
42. [AMPS] 4CX800 Idle Current a bit high (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Wed, 31 Oct 2001 11:40:53 -0500; I'd put a 20-25 ohm 20 watt non inductive, non bypassed resistor in series with the cathode. It'll lower your idle current and provide neg. feedback. Mark WB8JKR -- FAQ on WWW: http://www.contesting.; /archives//html/Amps/2001-10/msg00512.html (8,010 bytes)
43. [AMPS] 813 amp (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Sun, 2 Sep 2001 07:05:27 -0400; I've got three 813's here I put together for 160 about 20 years ago with 2300 volts on the plates and 600 ma I get 800 watts into the antenna. Mark WB8JKR ____________________________________________; /archives//html/Amps/2001-09/msg00009.html (8,223 bytes)
44. [AMPS] 4CX250's (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Mon, 20 Aug 2001 17:05:54 -0400; Bob, If I remember right, the CX had a ceramic insulator and the X was glass, I would think that either one would be fine. 73, Mark WB8JKR On Mon, 20 Aug 2001 15:40:25 -0400 "Bob Sullivan" <bobs@isqu; /archives//html/Amps/2001-08/msg00243.html (7,112 bytes)
45. [AMPS] Oil Filled Capacitors (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Tue, 10 Jul 2001 10:49:55 -0400; Ken, I don't know if it qualifies as the same thing or not, but I'm using a 35 ufd 5KV cap out of a "de-fib" machine in my supply. Its 17 years old now and never one problem with it. Mark WB8JKR ____; /archives//html/Amps/2001-07/msg00139.html (9,421 bytes)
46. [AMPS] SICK ALPHA 77DX (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Tue, 12 Jun 2001 05:29:07 -0400; Sounds like the stepstart relay isn't letting go after a few seconds. Contacts may just be stuck, If I remember right its been a few years, the step start relays are K1 a,b and K2 a,b Mark WB8JKR On; /archives//html/Amps/2001-06/msg00102.html (8,151 bytes)
47. [AMPS] Decision? (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Sun, 1 Apr 2001 06:24:51 -0400; Just my opinion, but I think you'd be better off with the money you're planning on spending, to look for a clean SB-220 Mark WB8JKR On Sat, 31 Mar 2001 23:05:40 -0600 Tom Martin <tmartin@chartermi.ne; /archives//html/Amps/2001-04/msg00001.html (8,126 bytes)
48. [AMPS] Dentron 10-160L replacement xformer woes... (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Mon, 23 Apr 2001 16:50:22 -0400; The filter cap bank will be the next thing to go at that voltage level. I rebuilt one of those amps about 15 years ago with that transformer and wound up buying the filter bank assembly for the SB-22; /archives//html/Amps/2001-04/msg00507.html (7,836 bytes)
49. [AMPS] swr (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Sat, 17 Mar 2001 05:24:05 -0500; Carl, I think what you're seeing here is the poor forwardreverse isolation of the bridge circuitry. Its simply rearing its ugly head under higher power conditions. It probably gets worse as the frequ; /archives//html/Amps/2001-03/msg00154.html (7,147 bytes)
50. [AMPS] Microwave oven transformers?? (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Sat, 24 Mar 2001 08:05:09 -0500; Isn't the microwave oven transformer current limited via core shunts like on the order of neon sign transformers? If so, I would think that connecting a few in parallel and removing or partially remo; /archives//html/Amps/2001-03/msg00232.html (7,575 bytes)
51. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Thu, 1 Feb 2001 19:43:34 -0500; Eric, If you really want to do it the best way is to replace the rel. output sensitivity pot with a pot that has a built in on/off switch. Then wire the switch in series with the wire going to the re; /archives//html/Amps/2001-02/msg00044.html (10,634 bytes)
52. [AMPS] Advice about what linear to buy (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Mon, 8 Jan 2001 20:02:16 -0500; Boy that's a fact! It seems so ass-backwards to push for better RX performance with higher dynamic range, better filtering etc when clean transmitters would be nearly as beneficial. -25 -28 db 3td or; /archives//html/Amps/2001-01/msg00295.html (9,017 bytes)
53. [AMPS] Horizontal Mounting Of 572B's (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Wed, 24 Jan 2001 16:13:52 -0500; My understanding is that they all are ok for horizontal mounting if pins 2 and 3 are in a vertical plane. If they are still available I'd look for Cetron. Mark WB8JKR On Wed, 24 Jan 2001 11:46:42 -06; /archives//html/Amps/2001-01/msg00592.html (7,762 bytes)
54. [AMPS] SB-200 hint/kink (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sat, 16 Dec 2000 17:32:45 -0500; Its just a "glich diode" across the meter movement to protect it from over voltage. Something that should be done in all of them. Mark WB8JKR _________________________________________________________; /archives//html/Amps/2000-12/msg00249.html (7,704 bytes)
55. [AMPS] AM on Titan II (score: 1): Author: wb8jkr@juno.com (wb8jkr@juno.com); Date: Thu, 28 Dec 2000 05:18:45 -0500; I would think as long as you keep the carrier power at 200-250 watts maximum it would be okay as long as the Titan can run a gallon out linear. Mark WB8JKR On Wed, 27 Dec 2000 22:39:09 -0500 Ken Pott; /archives//html/Amps/2000-12/msg00332.html (8,112 bytes)
56. [AMPS] A new band switch (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Thu, 12 Oct 2000 18:22:35 -0400; Use a "rack & pinion" type of set up with the shaft, and a right angle drive out the front panel. The "rack" would be the sliding shaft, the pinion would be the shaft going to the bandswitch knob. Th; /archives//html/Amps/2000-10/msg00256.html (9,059 bytes)
57. [AMPS] 572's (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Mon, 23 Oct 2000 21:25:28 -0400; Depends on the Plate voltage, but typically I'd say about 1200-1300 ohms at 2KV or so. Mark WB8JKR ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTE; /archives//html/Amps/2000-10/msg00525.html (7,386 bytes)
58. [AMPS] Plate Choke (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sat, 28 Oct 2000 13:42:16 -0400; Chuck, writes: Choke Z is maximum at the parallel resonant frequency. Technically the choke would work best at a parallel resonant point where Z would be at maximum. At the series resonant point the; /archives//html/Amps/2000-10/msg00637.html (8,093 bytes)
59. [AMPS] Blown TL922A... What to do? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 8 Sep 2000 11:12:33 -0400; Another excellent example of this phenomena is a Tesla coil. Mark WB8JKR ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE; /archives//html/Amps/2000-09/msg00291.html (9,510 bytes)
60. [AMPS] LK-500ZA Question (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Sun, 10 Sep 2000 16:47:28 -0400; I just got a LK-500ZA in for repair, the bypass cap at the plate choke had failed and it took out the grid shunt. According to the paperwork I have on this amp the values of the shunts are simply "fa; /archives//html/Amps/2000-09/msg00413.html (7,386 bytes)

Current List: 41 - 60
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]