Hi,
This is from the Feds website.
Image is — Plan for assignments of frequencies to land mobile and fixed service systems in the 450 - 470 MHz Band.
For Simplex Blocks C, D, E and F, the sub-bands 453.025-454 MHz, 458.025-459 MHz, 464.025-465.025 MHz and 469.025-470 MHz are sub-allocated for single frequency operations, respectively.
For Duplex Blocks E, F and G, the sub-bands 451-453.025 MHz paired with 456-458.025 MHz, 460.025-464.025 MHz paired with 465.025-469.025 MHz and 454.0-455.025 MHz paired with 459-460.025MHz are sub-allocated for two-frequency operations, respectively. The spacing between associated mobile and base station frequencies is normally 5 MHz with the mobile station in the upper frequency sub‑bands.
Your frequency falls in the Duplex Block G.
Cheers.