RADIO BROADCAST COVERAGE OE CITY AREAS 



133 



Curves of this kind for each of the several surveys made are shown 

 in Fig. 9. It will be seen that for field strengths of 10,000 ;uv./m. 

 and better, the Secaucus and College Point transmitting sites include 

 about 80 per cent of the receivers, that the West Street and West 



Fig. 



1000 5000 10,000 50.000 100.000 



Minimum Tield Strength in "Vm For 5 k.w Output 



9 — Percentage of receiving sets in metropolitan area included within various 

 strengths of field for each of the transmitting locations of Fig. 8 



Orange sites include around 70 per cent and Walker Street about 60 

 per cent. These curves are further analyzed in the chart to the 

 light of the figure to show in each case the proportion of the listeners 

 which may expect to receive 



a. less than 10,000 /.tv./m., 



h. between 10,000 and 50,000 Atv./m. 



c. over 50,000 /^v./m. 



It is seen from this that a location to the east or west of Man- 

 hattan Island would give a material improvement in uniformity of 

 distribution as compared with a location on Manhattan Island. Had 

 it been possible to include a station on Manhattan Island located 

 farther north than is either West Street or Walker Street and included 

 within the area of high steel buildings, it is probable that the corre- 

 sponding curves for such a location would show the poorest distribution 

 of the series. 



