Can your UDB1108S generator make high frequencies (my FreX with my laptop audio card can't go up to 22,000 hz)? Penny Yu February 17, 2016 07:43 Follow The UDB1108S can run up to 8 MHz. 363 times faster than Frex. The accuracy is greater as well. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.