You can scan two frequencies at once. You set one frequency either on the 2m or
70cm band and set another as the call frequency you want to use. Actually, if
you've got the bands opened up it can be anywhere from 111.00-176, 300-523, or
800-999.995 mHz. That's really the only kind of dual scanning option you've
got. If you go in to the call and hold the call button until it beeps a second
time it will swap between scanning that and your bfo frequency.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html