Search String: Display: Description: Sort:

Results:

References: [ +from:cbrown@woods.net: 100 ]

Total 100 documents matching your query.

81. Re: [RFI] Elimination of Treadmill RFI on 160 meters (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Fri, 09 Jan 2015 20:04:27 -0900
Looking at the picture I am a bit concerned about a potentially serious safety issue. Brick filters like the Delta shown have a pair of line terminals (does not matter which is hot and which is neutr
/archives//html/RFI/2015-01/msg00029.html (9,090 bytes)

82. Re: [RFI] Placement of Chokes (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sun, 08 Mar 2015 15:50:01 -0800
Assuming the twin-lead feeds are coax at the bulkhead and convert closer to the antenna I would start with a high value choke set (per Jims guide) at _BOTH_ ends of the antenna coax. In the tranceive
/archives//html/RFI/2015-03/msg00007.html (10,056 bytes)

83. Re: [RFI] Chasing RFI (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sun, 18 Oct 2015 14:11:36 -0800
I have a SDR-14 and rigged a "portable" setup (flat plate with a gel-cell and places to velcro the SDR and laptop) for exactly this. Don't exclude wider spaced though, switchers and similare are some
/archives//html/RFI/2015-10/msg00042.html (8,693 bytes)

84. Re: [RFI] New Kenmore Elite 72483 is RF-Quiet (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Mon, 7 Dec 2015 12:03:10 -0900
On that note... After figyhting RFI on multiple washer/dryer sets (adding filters, re-routing VFD cables, etc) I was finally able to find what I was looking for all along. SpeedQueen washer/dryer set
/archives//html/RFI/2015-12/msg00057.html (8,735 bytes)

85. Re: [RFI] Chasing RFI on 6M (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Mon, 21 Dec 2015 14:07:26 -0900
I have a pair of Arrow Antenna fox hunt loops (the larger "VHF" (1 - 600Mhz) ones) along with their step attenuator. Have used 160 - 2 meters, switch to one of their short 70cm beams for 70cm. ______
/archives//html/RFI/2015-12/msg00081.html (9,033 bytes)

86. Re: [RFI] Tracing wires. (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Wed, 20 Jan 2016 03:01:32 -0900
It would be a /classic/ for an after the fact install of a temp controlled attic fan to be tapped into the nearest circuit, often the light fixture feed of a nearby room. ____________________________
/archives//html/RFI/2016-01/msg00038.html (11,025 bytes)

87. Re: [RFI] Every 60 KHz (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Wed, 9 Mar 2016 16:20:25 -0900
I would agree, don't discount SMPS or similar just because of little/no drift. While a cheap wall-wart is almost certain to drift, something like a $300 high efficiency battery charger or the like mi
/archives//html/RFI/2016-03/msg00012.html (7,085 bytes)

88. Re: [RFI] Quiet Power Supply? (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Wed, 3 Aug 2016 15:01:55 -0800
Not the original responder but am another IOTA user. It looks like they have reworked their site and material since I last visited, more shiny, less technical. In the past there was much more detaile
/archives//html/RFI/2016-08/msg00009.html (16,816 bytes)

89. Re: [RFI] Solar Panel RFI (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sat, 13 Aug 2016 06:20:33 -0800
Have they actually provided you with a full datasheet including lifespan study data or at least projections? Personally I refuse to purchase any reserve power battery without a full datasheet includi
/archives//html/RFI/2016-08/msg00099.html (11,985 bytes)

90. Re: [RFI] Station ground - more (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Wed, 28 Sep 2016 09:44:46 -0800
NOT an AHJ or electrical worker, so do you own research... They are confusing allowed secondary grounds with what _must_ be done for the primary wiring. They used to allow a separately derived "groun
/archives//html/RFI/2016-09/msg00097.html (11,226 bytes)

91. Re: [RFI] led bulb test (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Thu, 10 Nov 2016 11:25:19 -0900
For my bulb testing I do 2 things. 1) There is a particular second floor light where the run to the light runs ~ 25ft horizontal parallel to the upper segment of my HF antenna at a distance of ~ 35ft
/archives//html/RFI/2016-11/msg00024.html (11,052 bytes)

92. Re: [RFI] Ferrite prices (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Mon, 5 Dec 2016 13:17:29 -0900
I picked up another 100 2631803802 2.4 toroid, mix 31 in October from them, $3.70 each as well as 100 2631102002 for $1.06 each _______________________________________________ RFI mailing list RFI@co
/archives//html/RFI/2016-12/msg00019.html (8,059 bytes)

93. Re: [RFI] Re-wiring station (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sat, 31 Dec 2016 02:21:08 -0900
There were a number of specs, but for practical purposes guidelines/examples. The actual CAT5 specs were almost entirely performance driven. Std practice to meet the CAT5 performance spec or 155+ACR
/archives//html/RFI/2016-12/msg00108.html (11,569 bytes)

94. Re: [RFI] More on 160 M RFI - significance of hum bands (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Wed, 29 Mar 2017 20:02:00 -0800
Assuming you get that pattern repeating 22khz, my guess would be a switch mode PS or similar operating at a switching freq of ~ 22Khz connected to a harmonics rich AC line, possibly with little to no
/archives//html/RFI/2017-03/msg00101.html (9,644 bytes)

95. Re: [RFI] UV Lights Noisy? (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sat, 15 Apr 2017 17:55:47 -0800
Same as any Flourescent, primary noise is the fixture/balast, built-in for a CFL, part of the fixture for a bulb like that. On a side note, since you linked to a raw bulb, not a special germicidal fi
/archives//html/RFI/2017-04/msg00015.html (7,961 bytes)

96. Re: [RFI] RFI & Alternator Replacement (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Fri, 22 Sep 2017 23:17:09 -0800
An old school externally regulated alternator with a _mechanical_ regulator is very, very noise. This is because there is a electromechanical "vibrator" pulsing the field coils. If you have an extern
/archives//html/RFI/2017-09/msg00021.html (10,963 bytes)

97. Re: [RFI] New Noise - 160 Meters (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Fri, 20 Oct 2017 13:02:49 -0800
DSL leakage would tend to be broader band then that. Looks/sounds more like switcher noise to be (A bad one). If there is a relation to the neighbors DSL work I expect it is more likely a new modem a
/archives//html/RFI/2017-10/msg00019.html (8,572 bytes)

98. Re: [RFI] Noise Cancellers - RFI Survival Guide (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Sat, 11 Nov 2017 14:07:26 -0900
Exactly, on all counts. I have one of the MFJ models. I found it useful years back when I had a single _strong_ source swamping things (it turned out to be a very nasty computer PS at a nearby house)
/archives//html/RFI/2017-11/msg00006.html (11,921 bytes)

99. Re: [RFI] Dishwasher (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Fri, 26 Jan 2018 14:23:22 -0900
The SpeedQueen cloths washers and dryers, the purly electromechanical models anyway (they also make electronic types) are wonderful...I have a set. But I am not aware of them making dishwashers. I ha
/archives//html/RFI/2018-01/msg00086.html (8,989 bytes)

100. Re: [RFI] ethernet switch with shielded case or low emission spectrum (score: 1)
Author: Christopher Brown <cbrown@woods.net>
Date: Thu, 29 Mar 2018 17:16:57 -0800
For similar reasons I recently ordered a pair of Netgear GS108 switches. 12VDC power and metallic case. I like the option to run off of heavily choked shack DC (except for the computer and a couple l
/archives//html/RFI/2018-03/msg00097.html (11,597 bytes)


This search system is powered by Namazu