Basically, it appears that Califonia requires anyone who holds himself out as a provider of a service in a number of fields to be licensed by the State. This reduces the number of fly-by-night operat
http://www.rfidjournal.com/article/articleview/207 Says more than I can type! Cortland Richmond _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contes
The Ethernet signals may or may not be a problem, but digital noise from cheaply built designs definitely is! Cortland KA5S completely. _______________________________________________ RFI mailing lis
The analogy I use is a leaky bucket; you can't use it until ALL the holes are plugged. But I'll give this to the onion: you cry a lot peeling! Cortland _______________________________________________
An interesting account I once read had to do with crosstalk in a multi-transmitter site. It seems the managers were resigned to replacing all the coax running out of the building and up the tower whe
I've worked on DSL; Jim is right, the overall line length is pretty much irrelevant. DSL runs at .1 to 1.1 MHz. and DSL equipment is pretty well matched to the approximately 100 ohms it sees on telco
An article in the IEEE Antennas and Propagation Magazine for October 2004 discusses the near field/far field distinction for dipoles of various lengths up to one wavelength. It concludes that the low
Here's something I wrote to a poster on another list who wanted an antenna to chase down HF EMI with his handheld Icom receiver. -- -- While NO passive, small antenna is very sensitive on HF, for EMI
Have we lost sight of the reason we are having this discussion? What effect does the *radio* have on *automobile* electronics? How the radio is grounded may indeed have an effect on where radio suppl
Seven thousand dollars? That's less than the cost of printing new labels. Cortland blanket saga. _______________________________________________ RFI mailing list RFI@contesting.com http://lists.conte
Appliances aren't tested to Part 15. Excerpt: Section 15.103 Exempted devices. The following devices are subject only to the general conditions of operation in Sections 15.5 and 15.29 and are exempt
Dave, Although digital boards in appliances are exempted from EMI testing, they still aren't allowed to interfere. If it were MY washer, I'd probably work on it; I'd probably pull the board and put m
They may be correct. Let's hope so! The problem with shielding and beads is that it's a bad idea to put more conductors and vibrating parts into machinery where it might come loose and fall onto haza
Thanks for the caution Tim. I should have been clearer. I meant to say I'd work on the low voltage, digital logic; 5 volt (say) bypass capacitors on 5 volts, not X and Y caps on motor leads. Cortland
Looks like they are now immune from FCC action on any of their presently non-compliant items. Smart lawyers! 7. In express reliance on the covenants and representations in this Consent Decree and to
A small loop, although not very sensitive, when coupled with modern radios (more than sensitive enough with a "real" antenna) is a good tool for tracking down HF and even lower frequency interference
Here are some results of poking around the Web via Google, and on the FCC site. While you should confirm this information with Medtronic, I think it likely the link runs in the 402-405 MHz Medical Im
Immunity testing is almost certainly to European standards. Here're radiated field immunity requirements from the draft ETSI EN 301-489-27, titled, Electromagnetic compatibility and Radio spectrum Ma
Martin, Are the resistors in that surge protector wire-wound? Cortland _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo