This model add an additional 23cm 1.2Ghz band to the standard Tri-Band Model.
The Metropolitan is a Tri-band VHF mobile adaptation of the
Suburban antenna that covers 144, 220 and 440 MHz with great performance on all three bands. The antenna operates as a quarter wave radiator on each band and as such, requires a ground plane for proper operation. No tuning is required, as the antenna simply screws onto a low profile (Motorola/NMO style) mount. Only 19 inches tall, the Metropolitan can be used with the Austin Triplexer for simultaneous three band operation with separate radios!