RobbH wrote: > The original poster said that he "must have pushed enough buttons," > because he was finally able to connect. That suggests to me that his > problem might have been due to some other sort of RF interference, > rather than a fixed network. I see similar situations sometimes with > weather sensors, which also use UHF frequencies, although at the other > end of that portion of the spectrum. One sensor might be blocked for a > few minutes or a few hours. Sometimes when that one re-establishes a > connection, the base will lose another sensor in a different location > for some time. > > I haven't yet thought of a likely moving source of RF interference that > could cause that, so I have wondered if atmospheric conditions that > cause RF signals to propagate in unusual ways could be to blame. I am > certain there have been times in the past when I have briefly received > very distant TV stations in the UHF band, probably due to "tropospheric > ducting." Such anomalous conditions sometimes occur around the time of > solstices and equinoxes, but they can occur anytime, sometimes triggered > by solar activity. Sometimes a distant signal can come in so strongly > that it swamps local transmitters. > > There probably some people here who know much more than I do about RF, > so I would like to hear what you think.
If only spectrum analyzers were affordable :) If RFI was suspected, I would imagine that moving the radio to the "opposite side" of the router should tell you if this is the case. Example, if the radio is on the east side of the router, move it to the west, same with above/below. RF energy decreases as the square of the distance (double the distance > 1/4 the power), so with the wifi range of the router, I would think moving away from any (unknown) point source (or even just closer to the router) would cause the RFI to be insignificant and the radio work as expected. Unless of course the unknown source is very powerful. I'll stop there :) Robb, you caused me to reread the op's posts, and I am thinking that he somehow resolved his issues and is up and running. It's been 2 days and he hasn't been back where his messages were pretty frequent before. I think we have all been there - something stops working, try this, try that, factory reset, reset router, reboot pi/PC, etc, etc, then all of a sudden things are working and we don't know why. Jim ------------------------------------------------------------------------ Redrum's Profile: http://forums.slimdevices.com/member.php?userid=33806 View this thread: http://forums.slimdevices.com/showthread.php?t=115533 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
