Originally Posted by Isolinear
Care to share your secret TG?
X-9 likely refers to the selector switch settings on the radio that matches the template for that agency. Our older fire radio template has a 160 channel template; A through J and 1 through 16. A few examples, although it's very rare to hear them referred to this way.
A-6 = Portland Fire OPS-6.
B-3 = Clackamas County fFre Dispatch.
C-14 = Vancouver Fire OPS-55.
F-11 = Multnomah County Sheriff Dispatch.