Some new federal interoperability frequencies have become active in the Lone Star state recently.
170.7250 MHz, P-25 is known as "Dallas East" in the DFW Metroplex,
171.4375 MHz, P-25 is known as "Dallas West".
The same frequencies have been heard in the Houston area, but they were called "L-1" and "L-2".
I've also received information that the 171.4375 MHz frequency is used as a federal interop channel in the Philadelphia area. It is referred to as the "FIO" channel.
Anyone else hearing activity on either of these frequencies?
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