Hi, > It is frequency selective, but at a fairly low Q. So I agree with Peter > that no commercial system has a wide enough bandwidth see much benefit > from this effect. In Australia we now have CDMA mobile phones. CDMA of course uses DS spread spectrum. Where I live we have terrible multipath reception, TV is an unwatchable mess and conventional mobile phones are useless. Even a car-phone is unusable. My new CDMA phone can't understand what the fuss is. It works solid with no drop-outs or distortion. There isn't a single dead spot. ............................. Zim -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads