From: "Frank Haber" 

>How far might a microwave cause interference from?

IF you have good signal from the AP - Maybe 2m, for a modern one with good
door seals.  For my leaky 1982 Panasonic, with a giant, poorly-shielded and
drifting in frequency magnetron, 8-10m, maybe  Gotta remember to sell that
to Hammas as a jammer (g).

>quite a few wlan's in the same building

Try Ch. 1 or 11 right now.  I think you get a couple of extra channels in
Europe.  For us, 1,6, and 11 are the classic non-overlapping (when the wind
is right) channels.  MIMOs stomp all over the entire middle of the band,
and should be banned from all right-living urban locales as sociopathic. 
(I swear electronics are being designed for Libertarians who live in gated
compounds or bomb shelters.)

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