Preferred Simplex Frequencies

These simplex frequencies correspond to both the ARRL Band Plan and the regional (T-MARC) band plan, and should be used for net operations.

6m2 m 1.25 m70 cm
51.50146.400147.405223.420445.925
51.52146.415147.420223.440*445.950*
51.54146.430147.435223.460445.975
51.56146.445*147.450223.480446.000**
51.58146.460147.465223.500**446.025
51.60146.475147.480223.520446.050*
52.02146.490147.495446.075
52.04146.505147.510
52.525**146.520**147.525*
52.55*146.535147.540
53.02146.550147.555
53.51*146.565147.570
53.55*146.580*147.585
53.90146.595

* Montgomery County Preferred Simplex Frequencies.

** National Calling Frequencies. These should be used only to establish initial contact or for a brief communication. Choose another simplex frequency for extended operations.