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21. Re: [RFI] RFI & Washing Machines (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 6 Sep 2009 01:39:33 -0500 (CDT)
Every direct drive variable speed washer I have listened to is RF noisy. After noticing issues with my Kenmore I made it a point to bring the HT and "sample" as many as possible and friends/relative/
/archives//html/RFI/2009-09/msg00012.html (10,055 bytes)

22. Re: [RFI] RFI & Washing Machines (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 6 Sep 2009 16:09:28 -0500 (CDT)
First note: This will void the warranty, more more important, this is a home appliance... It may only be 120Vac, but is likely sitting in a general use area w/ family/kids/etc. If there is any doubt
/archives//html/RFI/2009-09/msg00020.html (11,198 bytes)

23. Re: [RFI] RFI & Washing Machines (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 6 Sep 2009 16:14:13 -0500 (CDT)
It took about 2 hrs of actual work, but a great deal more research. In my case the botton front panel allowed access to the whole lower section, to install the filter and splice it into the power cab
/archives//html/RFI/2009-09/msg00021.html (11,140 bytes)

24. Re: [RFI] Washer RFI/EMI (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 6 Sep 2009 16:18:10 -0500 (CDT)
I saw this line, but the price (about $90 for the 12FC10) drove me to the 10EMC3 for $18 _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.co
/archives//html/RFI/2009-09/msg00022.html (7,455 bytes)

25. Re: [RFI] Washer RFI/EMI (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Mon, 7 Sep 2009 04:15:54 -0500 (CDT)
Some of the washers I inspected had entire panels of plastic with a metal frame. In my case the chassis is 100% steel with plastic facing, the "computer" is more or less boxed, and the VFD is 8 inche
/archives//html/RFI/2009-09/msg00024.html (10,426 bytes)

26. Re: [RFI] Washer RFI/EMI (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Mon, 7 Sep 2009 16:19:29 -0500 (CDT)
I could have stated that better, I was more worried about people slapping an AC line filter, bypass caps/etc inline and closing the case back up, leading to a blown VFD, non-working device, overheati
/archives//html/RFI/2009-09/msg00031.html (9,727 bytes)

27. Re: [RFI] RFI from telephone Equipment (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Tue, 22 Sep 2009 22:36:52 -0500 (CDT)
Based on the description I am guessing this is a full on powered remote, the ones my employer uses are commonly 8ft wide, 6ft tall and 4ft deep with locking doors on all sides. They can also be much
/archives//html/RFI/2009-09/msg00059.html (9,206 bytes)

28. Re: [RFI] Belkin PureAV Home Theater Battery Back up (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 5 Dec 2009 06:19:34 -0600 (CST)
3kva unit, same issues. Noisy control system, noisy charger, very noisy run time. Ended up adding heavy duty corecom filters to both the input and output, as well as ferrite to the network cable to s
/archives//html/RFI/2009-12/msg00013.html (11,019 bytes)

29. Re: [RFI] Belkin PureAV Home Theater Battery Back up (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 5 Dec 2009 06:32:32 -0600 (CST)
1) Large station battery pack (I like the Concord Lifeline AGMs) with a good PS/smart charger like an IOTA unit. (NEVER NEVER NEVER play with wet cell or other batts that are not ultra-low outgass ty
/archives//html/RFI/2009-12/msg00014.html (9,996 bytes)

30. Re: [RFI] Ham Conflict from Building Cellular Repeater? (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 19 Dec 2009 02:24:16 -0600 (CST)
Talk to the wireless engineers at your cell company. 1) Wilson is not known as a top shelf company... 2) That device is 800Mhz only... CDMA and GSM do use 800Mhz in some cases (re-used TDMA freqs), b
/archives//html/RFI/2009-12/msg00028.html (10,676 bytes)

31. Re: [RFI] Ham Conflict from Building Cellular Repeater? (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 19 Dec 2009 02:27:10 -0600 (CST)
Most of these are straight 12 - 14 vdc. A few come with an AC to 14V supply, unfort mostly cheap switchers from what I have seen. Per previous note, unless local cell service is 800Mhz only (unlikely
/archives//html/RFI/2009-12/msg00029.html (8,206 bytes)

32. Re: [RFI] Linksys Router Birdies (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Thu, 11 Mar 2010 18:38:34 -0600 (CST)
Using STP requires a STP supporting device. It will have a metal contact fingers around the inside rim of the RJ45 port made to contact the metal body of the RJ45 STP connector. This is not normally
/archives//html/RFI/2010-03/msg00020.html (9,047 bytes)

33. Re: [RFI] Linksys Router Birdies (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Fri, 12 Mar 2010 21:03:33 -0600 (CST)
Agreed, 2.4in toroids and multiple turns. In my original case 3 turns through a .4" id snapon (thin cable) made a dent, but I ended up with 10turns though a 2.4in type31 toroid on each ethernet cable
/archives//html/RFI/2010-03/msg00050.html (10,700 bytes)

34. Re: [RFI] Linksys Router Birdies (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Fri, 12 Mar 2010 21:11:03 -0600 (CST)
Funny, the power supplies for both my Airport Extremes are horrible, wideband *strong* trash 5Mhz and down. I ended up using 14 turns through a 2.4" type31 toroid, 2 of them on each side of the PS as
/archives//html/RFI/2010-03/msg00051.html (8,748 bytes)

35. Re: [RFI] Linksys Router Birdies (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 13 Mar 2010 05:55:57 -0600 (CST)
What model Airport? Mine are the extreme units, with the external power supply. The AP itself is fine, just the switching PS that is noisy. _______________________________________________ RFI mailing
/archives//html/RFI/2010-03/msg00053.html (10,505 bytes)

36. Re: [RFI] Linksys Router Birdies (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 13 Mar 2010 15:44:51 -0600 (CST)
Interesting, both of mine are the model prior, A/B/G/N, 100Mbit ethernet ports will do 2.4 or 5 Ghz but not both at same time. My PS units are Model A1202, listed at "Designed by Apple, assembled in
/archives//html/RFI/2010-03/msg00056.html (11,662 bytes)

37. Re: [RFI] Appliance interference and approvals (was Sears battery charger model #200.71222) (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sat, 10 Apr 2010 20:12:38 -0500 (CDT)
This I think is the big issue. Even 30 years ago what did these devices have, a few switches, maybe a motor or some heating elements. Ok, some switch and brush arcing. Now they all have an onboard co
/archives//html/RFI/2010-04/msg00026.html (13,626 bytes)

38. Re: [RFI] Big Farad Audio Caps & RFI? (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Tue, 13 Apr 2010 03:36:44 -0500 (CDT)
Those 'big caps' have too low a SRF to be useful as an RF bypass. *IF* you have low frequency ripple making it through to the radios audio stage it could help but this would normally indicate a faili
/archives//html/RFI/2010-04/msg00041.html (8,892 bytes)

39. Re: [RFI] Modem Hash (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 3 Oct 2010 16:41:14 -0500 (CDT)
Well, the start for an ADSL modem would be 20 - 30 turns of 22 - 24 ga around a type 31 2.4 inch toroid on the phone line, at the modem and at the NID. Best situation would be a ADSL2+ splitter at th
/archives//html/RFI/2010-10/msg00001.html (8,841 bytes)

40. Re: [RFI] Reasonably Priced Low-RFI "Large" Battery Charger (score: 1)
Author: "Christopher E. Brown" <cbrown@woods.net>
Date: Sun, 7 Nov 2010 01:55:40 -0600 (CST)
IOTA Engineering DLS series, one of the 12V units and with the built in IQ4. These are good quality switchers meant for power support or battery bank charge/maint. The /IQ4 models, or the standard mo
/archives//html/RFI/2010-11/msg00035.html (9,515 bytes)


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