> shawn, just about all uniden scanners will receive cell calls by
 >searching 894 to 901 mhz. the signal strength is less than that if were
 >received on the original cell freq.  i think it is a harmonic. but works
 >if the cells are close by.
Not a harmonic, but an image. It's called "doubling the IF." If your scanner 
has an IF of 10.7Mhz (and most do) then you double that to come up with 21.4 
(or there abouts. Sometimes there's a slight discrepency.) With some scanners 
you subtract 21.4Mhz from the displayed frequency to get the actual 
frequency, and with some you add 21.4 to the displayed frequeny. I've had 
scanners that work either way.
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