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#1
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![]() "JIMMIE" wrote in message ... Could it have been that only one of the new lights was causing the problem. Jimmie I verified that each of the lights by itself was a problem. Bad manufacturing lot? Who knows? All I know is that they were unacceptably RFI-polluting. I got rid of them and replaced them with lights that were-- right out of the box-- free of RFI. Problem solved. Hope this saves someone else the three hours of work it cost me. There is no way I was going to go back to the store and buy four more of the bad lights on the basis of "Well, maybe four is too small of a sample size to draw any conclusions." Fool me once, shame on you; fool me twice, shame on me. I reward companies that make RFI-friendly products and punish those that don't. Always have lived by that dictum. I also try at every turn to educate my neighbors to the same, so that we can all have as quiet an RF environment as possible. Hence, my purpose in posting the original post here. Al W6LX |
#2
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News Features wrote:
"JIMMIE" wrote in message ... I reward companies that make RFI-friendly products and punish those that don't. Always have lived by that dictum. I also try at every turn to educate my neighbors to the same, so that we can all have as quiet an RF environment as possible. Hence, my purpose in posting the original post here. Al W6LX Absolutely, to everything in your post! The data is much appreciated .... one thing I am still searching out is a transparent shield for the tubes themselves; I have considered a shield made of screen but have not acted on it (lazy/other-things-to-do.) I suspect rfi is using the plasma discharge in the tube itself as some type of inefficient antenna, as I have all shielded electronic ballasts ... In addition, got any ideas he What do you do about wifi switches/routers/wireless-nics/etc? It seems, to me, the frequencies which the Ghz signal(s) are modulated at, by the data stream of bits, is/are the real offender(s)? Other than the strategic placement of these devices and directional antennas, I have found little control over the RFI. I have found this to be a problem on AM/FM/SW/VHF/SHF; I have noticed, some devices/brand-names are less offensive than others ... I am, mostly all, Linksys with a couple of NetGear nics ... Any ideas from anyone would be appreciated here ... and yes, any hard-cabling/power has been well choked with ferrite beads and filtered power-strips ... I am asking because I have noticed, a person working to cure one form of RFI will, most likely, be working on "next one", next ... :-) Regards, JS |
#3
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![]() What do you do about wifi switches/routers/wireless-nics/etc? It seems, to me, the frequencies which the Ghz signal(s) are modulated at, by the data stream of bits, is/are the real offender(s)? Other than the strategic placement of these devices and directional antennas, I have found little control over the RFI. Hi, John, I have found the exact same thing as you. The modulation rate on those wireless modems and such fall right in the HF band. You've already listed what I've tried: antenna orientation. However, most of those things have a variable power output. You can "log in" to them via a web interface; point your browser to their IP address and you can perform administrative functions including adjusting the output power. One of two things will happen: Increasing the output power may cause the data rate between your computer and the router to increase, pushing the RFI higher in the HF spectrum. Or, you may find that using the minimum power possible you can reduce the interference level. I guess what I am saying is try changing it and see what happens. The one I am using right now is an AT&T wireless DSL modem made by 2Wire. Good luck, Al W6LX |
#4
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Al Lorona wrote:
Hi, John, I have found the exact same thing as you. The modulation rate on those wireless modems and such fall right in the HF band. You've already listed what I've tried: antenna orientation. However, most of those things have a variable power output. You can "log in" to them via a web interface; point your browser to their IP address and you can perform administrative functions including adjusting the output power. One of two things will happen: Increasing the output power may cause the data rate between your computer and the router to increase, pushing the RFI higher in the HF spectrum. Or, you may find that using the minimum power possible you can reduce the interference level. I guess what I am saying is try changing it and see what happens. The one I am using right now is an AT&T wireless DSL modem made by 2Wire. Good luck, Al W6LX AL: I was just "about" with a FSM and freq. meter ... the worst offender is a Linksys "Wireless-N Home Router"--WRT150N ... I am logging into 192.168.1.1 (the web interface to the router) to search for the settings you mentioned, it has a TON of settings ... will get back to you! I cannot believe I didn't think of that, again, I claim Alzheimers'! ;-) THANKS! Regards, JS AKA Brett :-) |
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