Is there a way to enter a specific frequency to monitor on the SDS200 via the keypad (NOT program through Sentinel)? If I see a signal on my SDR, I would like to see if the scanner can listen to it by entering in the frequency on the scanner (obviously blocked regions won't be accepted). I read that on the SDS100 it's under an advanced menu; although, it will not save those when a new freq. is entered, but it is possible to listen.