Land Mobile Propagation Curves

NOTE: This page is not to be used for FM or TV broadcast. - Use our CURVES page instead.

This page can be used for the land mobile VHF bands between 30~50 and 148~174 MHz. It can also be used for the 6 meter and 2 meter amateur radio bands (it may also be safe to use with the 220 MHz band) as well as a potential narrowband broadcasting allocation at 26 MHz.

These curves are based on FCC Report R-6406: Technical Factors Affecting the Assignment of Facilities in the Domestic Public Land Mobile Radio Service by Roger Carey (FCC, 1964).

Data Entry

Select Curve Type:

Radio Band:

What to Calculate:

A: Effective Radiated Power:
in kilowatts - For 100 watts, enter 0.1

B: Height Above Average Terrain

C: Distance (in kilometers)

D: Field Strength (dBu)