Mobile radio propagation path loss studies at VHF/UHF bands in Southern India

Field strength measurements at 200, 400 and 450 MHz (VAF/UHF band) were con ducted with the field strength meter placed on board of a vehicle in Southe rn India. Observed held strength values were converted into path losses and are compared with different path loss prediction methods like Hata, Egli, Blomquist-Ladell, COST 231 Walfisch-Ikegami, Walfisch-Bertoni and ITU-R. Th ese path loss studies are carried out in urban, suburban and open areas in this region. The results showed that Rata's method gave better agreement wi th observed values in urban, suburban and open regions. COST 231 Walfisch-I kegami model is also in good agreement with the observed values in urban an d suburban regions. Egli and Blomquist-Ladell methods showed moderate agree ment in open region only. The agreement of Walfisch-Bertoni and ITU-R metho ds with observed values is not good.