- 81. Re: [RFI] Line noise update (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Tue, 9 Oct 2012 18:38:57 -0500
- Hello to the RFI sniffers! I have yet to put this radio to that application, but my Icom IC-91A offers AM reception from below the AM b'cast band thru HF, plus the aircraft band and even higher. If I
- /archives//html/RFI/2012-10/msg00022.html (12,682 bytes)
- 82. Re: [RFI] rfi problem (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Thu, 1 Nov 2012 11:14:51 -0500
- Jim's comments really hit home with me. I think I have said this before on this reflector, but it was a few years ago, so maybe worth repeating: When I lived in northern IL prior to 2000, I was in a
- /archives//html/RFI/2012-11/msg00003.html (9,509 bytes)
- 83. Re: [RFI] RFI to new photoelectric smoke detector (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Mon, 5 Nov 2012 09:45:13 -0600
- Kelly, While I do not have info for you on RFI-proof smoke/fire detectors, I can tell you that at least 1, and possibly more than 1, semiconductor device is getting forward biased by your RF. Your op
- /archives//html/RFI/2012-11/msg00015.html (9,245 bytes)
- 84. Re: [RFI] RFI to new photoelectric smoke detector (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Tue, 6 Nov 2012 11:33:27 -0600
- Ron, Since the quotation was from my posting, I'll answer the question. First, in most cases these days, merely opening up the housing of the detector is likely to void the warranty. (Replacing the b
- /archives//html/RFI/2012-11/msg00022.html (10,171 bytes)
- 85. Re: [RFI] any ideas on this one? (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Sat, 24 Nov 2012 10:57:18 -0600
- Roger, As others have said on this list before, you can spend a lot of time speculating as to the cause of an RFI source. What matters is to go find the source. If you think it is about a mile away,
- /archives//html/RFI/2012-11/msg00053.html (9,707 bytes)
- 86. Re: [RFI] 160M/Modem problem (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Wed, 19 Dec 2012 22:25:09 -0600
- Jim and All, Yes, UTP is used almost universally now for high speed data because it works so well. However, STP ("Shielded Twisted Pair") has been available for quite some time, but in my experience,
- /archives//html/RFI/2012-12/msg00074.html (11,801 bytes)
- 87. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Sat, 22 Dec 2012 23:50:34 -0600
- Kurt, The charger for the FT60 is not a unique situation. I purchased an Icom AD-91A HT earler this year - its receiver covers AM b'cast band thru 1 GHz or so. The Icom charger (rig was bought new, i
- /archives//html/RFI/2012-12/msg00105.html (10,450 bytes)
- 88. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Tue, 25 Dec 2012 22:19:19 -0600
- Mike, They most likely DO pass "testing standards". That shows what a piss poor job the FCC has done with regards to emissions on so many devices. Remember, the "warning" label on Part 15 and similar
- /archives//html/RFI/2012-12/msg00139.html (12,393 bytes)
- 89. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Wed, 26 Dec 2012 09:36:23 -0600
- Cortland, Thank you for reinforcing my point about the FCC's deplorable lack of guts and common sense with emissions. The situation for TV receivers, plus the general lack of radiated emissions requi
- /archives//html/RFI/2012-12/msg00147.html (11,028 bytes)
- 90. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Wed, 26 Dec 2012 10:30:13 -0600
- Eddy, Actually, an incident along the lines of what you say actually did happen to the FCC itself a number of years ago in the Chicago area. Up until late 1999, I lived in the far NW Chicago suburbs
- /archives//html/RFI/2012-12/msg00151.html (12,414 bytes)
- 91. Re: [RFI] 1.23V-30V DC DC Buck Converter Step Down Module (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Sat, 5 Jan 2013 17:14:41 -0600
- The answer to your question is partly controlled by your intended application. What do you wish to do with it, if you bought one? A few things are obvious: it is a "bare card", so you would need a co
- /archives//html/RFI/2013-01/msg00053.html (9,341 bytes)
- 92. Re: [RFI] 1.23V-30V DC DC Buck Converter Step Down Module (score: 1)
- Author: "Dale Svetanoff" <svetanoff@earthlink.net>
- Date: Sun, 6 Jan 2013 17:18:59 -0600
- David, This is the point at which a tutorial in power supply filter design would serve you well. There are many factors that have to be considered in designing the input and output filters for use wi
- /archives//html/RFI/2013-01/msg00059.html (13,867 bytes)
- 93. Re: [RFI] RFI suppression cores for 147 MHz (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Fri, 1 Mar 2013 16:09:14 -0600 (GMT-06:00)
- Jeff, You are just fine on what you understand about STP wiring. The problem is in the TERMINATION of those shields. Two truths must exist in order for the shield to do its job correctly: 1) It MUST
- /archives//html/RFI/2013-03/msg00002.html (14,545 bytes)
- 94. Re: [RFI] RFI suppression cores for 147 MHz (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Fri, 1 Mar 2013 19:09:21 -0600 (GMT-06:00)
- Jim, Thank you for the comments. The reason I stressed the full circumferential shield termination within the connector (usually within a back shell or termination clamp/ring system) is because that
- /archives//html/RFI/2013-03/msg00004.html (13,605 bytes)
- 95. Re: [RFI] RFI suppression cores for 147 MHz (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Sat, 2 Mar 2013 19:11:48 -0600 (GMT-06:00)
- Jeff, Thanks for supplying the links - big help. First, let me start by saying that meeting FCC Part 15, Class B requirements falls way short of what is needed for RFI suppression when coupling into
- /archives//html/RFI/2013-03/msg00007.html (14,980 bytes)
- 96. Re: [RFI] RFI suppression cores for 147 MHz (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Sun, 3 Mar 2013 21:25:47 -0600 (GMT-06:00)
- Cortland, Thank you for the kind words AND for pointing out that the Switch or Router is a Class A device. I missed that part. Yes, it was good to see you in the lab when you visited a few years ago.
- /archives//html/RFI/2013-03/msg00009.html (13,941 bytes)
- 97. Re: [RFI] router RFI (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Mon, 4 Mar 2013 12:06:53 -0600 (GMT-06:00)
- Jim, Like Cortland, I have no info available to me on the work I did on Ethernet radiated emissions. That was early in my stint at Collins, and the actual data was considered to be proprietary. That
- /archives//html/RFI/2013-03/msg00015.html (13,161 bytes)
- 98. Re: [RFI] Cree LED Bulbs? (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Sun, 10 Mar 2013 22:49:38 -0500 (GMT-05:00)
- Mike, When you changed out the power supplies, did you change to another power supply identical to the original, or did you change to a known "linear" power supply (NOT a switcher)? The battery and a
- /archives//html/RFI/2013-03/msg00042.html (10,291 bytes)
- 99. Re: [RFI] Cree LED Bulbs? (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Mon, 11 Mar 2013 23:21:59 -0500 (GMT-05:00)
- Cortland, Mike, Kurt, and All, If you go back to my post of a few days ago, it sounds as if I may have scored a direct hit (by dumb accident) on this system; after careful reading of Mike's informati
- /archives//html/RFI/2013-03/msg00056.html (11,643 bytes)
- 100. Re: [RFI] Cree LED Bulbs? (score: 1)
- Author: Dale <svetanoff@earthlink.net>
- Date: Mon, 11 Mar 2013 23:41:26 -0500 (GMT-05:00)
- Mike, I ran into a keyboard problem and accidentally sent my prior posting before it was complete. To finish ... Yes, I think you have a problem and one way to get going on fixing it is to go visit t
- /archives//html/RFI/2013-03/msg00058.html (13,582 bytes)
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