Which type of radios should be used in the city, of course the high frequency UHF radios, so what is the range of UHF radios?
Approximate range for UHF 2 way radios in urban conditions:
1 watt = 1 miles, 200,000 sq. ft., 15 floors
2 watt = 2 miles, 250,000 sq. ft., 20 floors
3 watt = 3 miles, 300,000 sq. ft., 25 floors
4 watt = 4 miles, 350,000 sq. ft., 30 floors
5 watt = 5 miles, 400,000 sq. ft., 35 floors