The Icom IC-R20 has dual watch capability in specific bands. The receiver has band A and band B.
Dual watch is possible between band A and B. However, dual watch is not possible within band A or B.
Examples of dual watch listening combinations include:
Listening to 2 air band frequencies.
Listening to 2 race cars.
Listening to an amateur frequency and monitoring an air band frequency.
Listening to FM radio station and a UHF TV station.
Listening to an amateur VHF frequency and UHF frequency simultaneously.