Mail Archive Search: <+from:kk7uv@bresnan.net>

Results:

References: [ +from:kk7uv@bresnan.net: 47 ]

Total 47 documents matching your query.

1. [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)
2. [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)
3. [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)
4. 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)
5. 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)
6. [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)
7. 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)
8. Re: [Amps] using a scope to time relays (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 25 May 2009 12:25:08 -0600; Thanks Mike. That is exactly the relay timing circuit I am using. Now I just need to check the timing and adjust as needed. His method for measuring the time delay appearts to use a little circuit t; /archives//html/Amps/2009-05/msg00190.html (7,509 bytes)
9. [Amps] using a scope to time relays (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 25 May 2009 11:10:08 -0600; I'm attempting to set my input and output relay sequencing using a scope. I am using a 9v battery source to provide the indication of contact closure. How do you get the scope to show the actual sudd; /archives//html/Amps/2009-05/msg00187.html (7,458 bytes)
10. [Amps] 813 cathode zener bias (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 25 May 2009 05:09:43 -0600; I am considering building the adjustable zener bias circuit as used in the GM3SEK triode board to try in my 3x813 grounded grid amp project. The GM3SEK documentation says the cicuit is good for 3 to; /archives//html/Amps/2009-05/msg00186.html (6,908 bytes)
11. [Amps] caps across rectifier diodes (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Sun, 1 Mar 2009 09:52:52 -0700; I am using a string of 4 6A10 diodes in each leg of my HV power supply. Should these each have a .01uF 1kv cap across them? I see some designs that do this and some do not. Tnx, Steve KK7UV _________; /archives//html/Amps/2009-03/msg00014.html (6,692 bytes)
12. Re: [Amps] MFJ Analyzer for adjusting matching network... (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Sat, 21 Feb 2009 05:46:14 -0700; I was told to also disconnect the plate choke and the ouput safety choke when doing this measurement. Steve KK7UV _______________________________________________ Amps mailing list Amps@contesting.com; /archives//html/Amps/2009-02/msg00608.html (9,756 bytes)
13. Re: [Amps] pc board material (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 16 Feb 2009 10:48:29 -0700; Thanks to several of you for the identification. G-10, FR4, Garolite. That sure made it easy to find online. 73,Steve KK7UV _______________________________________________ Amps mailing list Amps@cont; /archives//html/Amps/2009-02/msg00508.html (7,967 bytes)
14. [Amps] pc board material (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 16 Feb 2009 07:47:12 -0700; I had some light-green, undrilled, unclad, fiberglass board material that was great for simple point-to-point circuits. My supply is exhausted. Does anyone know a source for this material? Websearchi; /archives//html/Amps/2009-02/msg00494.html (6,660 bytes)
15. [Amps] bypassing control leads (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Tue, 3 Feb 2009 05:43:42 -0700; My homebrew amp has 3 compartments - the RF compartment, an under-chassis compartment for the input and control circuitry, and a front subpanel area for metering and control knobs and switches. What; /archives//html/Amps/2009-02/msg00050.html (7,435 bytes)
16. Re: [Amps] pole transformer (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Mon, 02 Feb 2009 11:49:03 -0700; Wasn't the PCB-cancer risk debunked 10 years ago in the Kimbrough study (?). What data??? What hazards??? If I remember correctly, there never was a causal link between PCB exposure and human cancer.; /archives//html/Amps/2009-02/msg00033.html (7,891 bytes)
17. [Amps] Pi coil tapping (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Sun, 25 Jan 2009 08:42:45 -0700; What set-up precautions are necessary to run through a coil-tapping process? Here is what I've done so far... With my tune and load capacitors mounted in their final positions in the RF compartment,; /archives//html/Amps/2009-01/msg00290.html (8,089 bytes)
18. Re: [Amps] amp relay interconnection (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Wed, 21 Jan 2009 10:09:32 -0700; I always forget to mention something important. This is a 160m-20m amp. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listi; /archives//html/Amps/2009-01/msg00206.html (7,052 bytes)
19. [Amps] amp relay interconnection (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Wed, 21 Jan 2009 09:59:46 -0700; When inter-connecting input and output relay RF contacts, what conditions warrant using coax versus wire? My layout will be fairly compact with no more than 3 inches of conductor needed between any o; /archives//html/Amps/2009-01/msg00203.html (7,368 bytes)
20. [Amps] Hi-G d'Italia relays (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Tue, 20 Jan 2009 04:17:09 -0700; N4ZR wrote... I bought a couple of these to try out. I was preparing one for mounting in the amp and found the attached coax was a little too short so needs to be replaced. I've attempted to disconne; /archives//html/Amps/2009-01/msg00183.html (7,486 bytes)

Current List: 1 - 20
Page: [1] [2] [3]