The Mudcat Café TM
Thread #59418 Message #3381396
Posted By: Amos
25-Jul-12 - 02:14 PM
Thread Name: BS: The Mother of all BS threads
Subject: RE: BS: The Mother of all BS threads
There is a world of difference between frequency-skipping (used in radio links, for example, as a security measure inter alia) and mixing frequencies using local oscillators, which allows you to process the signals at a lower sample rate, and do other advantageous things with them. There is also a world of difference between two channels and two frequencies. We handle scores of frequencies ranging from 8 Hz to 500 kHz, for example, with the same instrument, many of them simultaneously such as when seeking passively for signals of opportunity within a wide band of possible frequencies.