Emissions Designator 4M20F9W
Bandwidth: 4.20 MHz
Modulation Type: [F] Angle-modulated, straight FM
Modulation Nature:  Composite, one or more digital channel, one or more analog
Information Type: [W] Multiple Formats of Data Transmitted
The Emissions Designator 4M20F9W signifies a wireless radio which transfers data over a modulated wave using Composite, one or more digital channel, one or more analog signal. This signal transmits at a 4.20 MHz [4M20] maximum bandwidth . bandwith does not indicate frequency of the signal. Emissions Designators describe the type of signal only.