solarwind wrote: > I've been looking at the Radio Amateurs of Canada band plans here: > http://www.rac.ca/en/rac/services/bandplans/allband.php and I see them > listing the 5 GHz - 248 GHz. Do people actually use these bands? > = google Amateur microwave records http://www.microwavers.org/papers/Microwave-Distance-Records.pdf UK records =95 1.3GHz 2617km =95 2.3GHz 1083km =95 3.4GHz 980km =95 5.7GHz 1244km =95 10GHz 1275km =95 24GHz 391km =95 47GHz 203km =95 76GHz 79.6km =95 134GHz 17.7km =95 145GHz 1.29km =95 Light (red) 76km - free-space link 145 GHz world record is 79km 12 JAN 2003 CW FM07FM W2SZ/4 EM96WX WA1ZMS/4 79.6 145 WORLD you see up to 47GHz is quite good :-) > What's the highest frequency that a radio amateur can practically use? > = Ultraviolet :) -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist