Both interesting ideas. Our current receivers have photodiodes pointing in all directions. It would be interesting to have them pointed in only one direction to minimize reflections. Also, short high speed transmissions with a gap to allow for reflections to die out is interesting. Harold > Would it help to have a high / central location reflector (or just place > the tx/rx there) that gave a good line of sight 1st path at all times. > > Would burst transmission help with fast data rate bursts followed by > longer > quiet periods to allow echos and longer paths to fade. > > Russell > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 FCC Rules Updated Daily at http://www.hallikainen.com Not sent from an iPhone. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .