Sheep Guts comment re transmit and then LISTEN is very appropriate. How many times to do hear some one call taxying on the MBZ freq, and then without a pause transmit on the area frequency.
I also agree that the most appropriate call inbound is leaving F120, usually you are within 30 miles, about to descend into VFR levels. By monitoring the MBZ freq, you usually have a idea of the traffic prior to leaving F120.