Based on the Hata-Okumura Model

Parameters
      Frequency = 400 MHz
      Tx Height = 1.5 m
       Tx power = 35 dBm
        Rx gain = -2 dB
        Tx Gain = 0 dB
      Signal BW = 0.015 MHz
      RX Height = 30
RX Noise Figure = 12
   Required SNR = 10


Allowed path loss = 143.24 dB

   Max Distance Urban = 	5478 meters	3.40 Miles
Max Distance SubUrban = 	9282 meters	5.77 Miles
   Max Distance Rural = 	29216 meters	18.15 Miles