. Bell telephone magazine . sable indetecting the approach of aircraftfrom the sea and in locating airplanesin the air. Over land, there is a vast system of civilian observation postswhich swiftly report any planes, overthe existing network of commercialtelephone lines, to Army filter cen-ters. There the telephoned reportsare evaluated, and the filtered re-ports are passed on to informationcenters, where the course of approach-ing aircraft is plotted, much as ayachtsman lays out on a navigationchart the course for his days run.The Control Officer, from the infor-mation thus visually before him
GLIX-115-2CRX4RR
Magyarország
Kollekció
GLIX Prime
Novel Use
Fotós / Szerző
Reading Room 2020
Leírás
. Bell telephone magazine . sable indetecting the approach of aircraftfrom the sea and in locating airplanesin the air. Over land, there is a vast system of civilian observation postswhich swiftly report any planes, overthe existing network of commercialtelephone lines, to Army filter cen-ters. There the telephoned reportsare evaluated, and the filtered re-ports are passed on to informationcenters, where the course of approach-ing aircraft is plotted, much as ayachtsman lays out on a navigationchart the course for his days run.The Control Officer, from the infor-mation thus visually before him