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References: [ +from:kk7uv@bresnan.net: 64 ]

Total 64 documents matching your query.

41. Re: [Amps] using a scope to time relays (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Mon, 25 May 2009 16:28:46 -0600
Thanks to everyone for the tips, especially Mike K4EAR for a great tipsheet from ifwtech. My relays are now timed and ready. Steve, KK7UV __,_._,___ _______________________________________________ Am
/archives//html/Amps/2009-05/msg00195.html (7,629 bytes)

42. [Amps] ALC setup (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sat, 30 May 2009 06:11:23 -0600
I am putting together a simple ALC circuit for my homebrew amp and TS870. The ALC circuit is found in Orr, K8RA Hanbook amp, K5DR webpage, etc. It uses a capacitive divider off the RF input line and
/archives//html/Amps/2009-05/msg00269.html (6,813 bytes)

43. Re: [Amps] [rfamplifiers] Unexpected loading capacitance (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Tue, 2 Jun 2009 18:55:29 -0600
Looking further into my lower-than-expected power output on my 3x813 amp.... 1. Checked all tubes in my 813 supply one at a time. Only 1 out of 12 had slightly lower plate current than the rest. I se
/archives//html/Amps/2009-06/msg00003.html (8,426 bytes)

44. Re: [Amps] Watts to DBM?? (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Mon, 5 Oct 2009 04:59:41 -0600
So, I am using an oscilloscope with an RF sampler to measure output power. With barefoot 100 watts, I read 0.6 volts p-p on the scope. With the amp in line, I read 2.0 volts p-p on the scope. What is
/archives//html/Amps/2009-10/msg00085.html (6,798 bytes)

45. [Amps] SB220 transformer capability (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Thu, 8 Oct 2009 05:08:04 -0600
Currently I am powering my 3x813 amp with a homebrew power supply built around an SB-220 power transformer. I have been keeping my plate current to 600 mA based on tube specs, although I've heard I c
/archives//html/Amps/2009-10/msg00134.html (7,012 bytes)

46. [Amps] How high can I go with this amp? (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sat, 10 Oct 2009 05:52:23 -0600
Can I get more output power/efficiency with a smaller inductance coil in my pi-net? Power supply is 2700v key-down and capable of 800mA (it is built around an SB-220 transformer). Ip meter max is 750
/archives//html/Amps/2009-10/msg00162.html (7,652 bytes)

47. [Amps] bifilar tuned input (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Fri, 6 Nov 2009 10:34:09 -0700
Has anyone more information or experience with a bifilar tuned input. Orr only briefly describes it in 23rd Radio Handbook (p. 15.19), and there are a couple webpages (wb8erj.com, raibeam.com) with s
/archives//html/Amps/2009-11/msg00082.html (7,255 bytes)

48. [Amps] resistors for hi-pot tester (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sun, 2 Jan 2011 08:32:01 -0700
Putting together a hi-pot tester and having trouble locating high value resistors of suitable wattage and voltage rating. A few websites recommend ECG/Philips spiral-wound resistors for this applicat
/archives//html/Amps/2011-01/msg00015.html (7,153 bytes)

49. [Amps] BVT problem (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sun, 9 Jan 2011 15:14:44 -0700
Breakdown voltage tester. Built it like the plans on AG6K (R. Measures) webpage. I'm using a neon sign transformer. Hongba ME-1000-6000-30. 120:5000v. Running a voltage doubler as shown by Measures.
/archives//html/Amps/2011-01/msg00115.html (7,363 bytes)

50. Re: [Amps] Henry HF 2500 (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Mon, 2 Jan 2012 13:55:54 -0700
find any reviews of this specific model.  Anybody wanta fill me in before I spend the clams? Command Technologies HF2500 maybe? _______________________________________________ Amps mailing list Amps@
/archives//html/Amps/2012-01/msg00029.html (7,447 bytes)

51. [Amps] High Band Amp Considerations (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Thu, 26 Jan 2012 05:58:22 -0700
I am pondering my next amp build - - a 5-bander (10 thru 20m) dedicated to my 5-band beam with around 800 - 1000w output. All the better if I could use my existing power supply that has 2500/2900v at
/archives//html/Amps/2012-01/msg00198.html (6,991 bytes)

52. Re: [Amps] High Band Amp Considerations (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sat, 28 Jan 2012 07:29:29 -0700
Thanks for the suggestions. I will begin the hunt for a 3CPX800A7. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a
/archives//html/Amps/2012-01/msg00225.html (6,904 bytes)

53. [Amps] 3CPX800A7 sources? (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sun, 29 Jan 2012 05:28:36 -0700
After a couple days of perusing the web, I cannot find much. - WA8WZG offers good pulls for $350. - A 3-yr old post on eham forums by W9CLA indicates they can be had for $175 but no indication where
/archives//html/Amps/2012-01/msg00254.html (6,553 bytes)

54. [Amps] GPT-750 power supply (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Thu, 9 Feb 2012 06:03:18 -0700
I've been attempting to design a power supply using the big (100 lb) TF-193 transformer from a GPT-750 transmitter, the rating of which is 2800vdc @ 750mA CCS, which is about what I'd like to get out
/archives//html/Amps/2012-02/msg00070.html (7,238 bytes)

55. [Amps] Coil Tapping (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sat, 14 Jul 2012 09:50:30 -0600
I am putting a new coil in my amp's Pi-Net. I am going to use the MFJ259b on the output to find the coil taps (as I did a few years ago) but I've forgotten some set-up details. For my 3x813's, my not
/archives//html/Amps/2012-07/msg00195.html (6,995 bytes)

56. Re: [Amps] Coil Tapping (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Wed, 18 Jul 2012 18:07:19 -0600
Thanks for the unanimous responses gentlemen. The tapping exercise went well. Steve, KK7UV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contestin
/archives//html/Amps/2012-07/msg00223.html (7,259 bytes)

57. [Amps] Plate Choke question (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sat, 9 Nov 2013 12:55:31 -0700
For a 1kw amp designed for 10m thru 20m only (5 bands), is there a plate choke available that is optimized for this purpose? Would it have all resonances above 30 Mhz? Thanks, Steve KK7UV ___________
/archives//html/Amps/2013-11/msg00176.html (6,775 bytes)

58. Re: [Amps] Plate Choke question (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Sun, 10 Nov 2013 11:47:59 -0700
wirewound glitch resistor. The WW has inductance and serves a dual >purpose wheras Ive seen a few amps where the "VHF" choke cause problems. Thanks for the advice. I'll wind a 50uH choke and use a 1
/archives//html/Amps/2013-11/msg00222.html (8,688 bytes)

59. [Amps] meter behavior (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Wed, 13 Nov 2013 04:51:07 -0700
I am trying to select some panel meters for the next amp project. I have many older types to choose from in my existing stash. I have noticed over the years that there are meters whose needles swing
/archives//html/Amps/2013-11/msg00270.html (6,963 bytes)

60. [Amps] Discrepencies in Pi-net calculators (score: 1)
Author: "Steve Flood" <kk7uv@bresnan.net>
Date: Tue, 19 Nov 2013 19:24:46 -0700
I've been working through some Pi-network design for an input tuning network recently and have tried out several online calculators as well as traditional formulas and common software. Using the same
/archives//html/Amps/2013-11/msg00384.html (7,377 bytes)

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