TK.ixs.ii i..i\in K.tnio Tr.i.nriiDM-: iu.ixsmissiox 401 



MlCASl'RKMKM I'RIXIKAM 



The siCfiH- of tlu'st- Ir.msallaiitic i-x|H>riiiu'iits is shown in Via. 1 

 The British ti-rminal stations will i)0 seen to lii' in tlic vicinily f)f 

 London and thi- Anurican stations in the northeastern part of the 

 Inited States. The United States transmiltinj; stations are the 

 radio tele|)lioiie transmitter at Ro(k\- I'oint. ami tlie iiorin.d radio 



Fig. 2 — Exterior of Ki\crlica'l Kadio Reccivinj; Station 



telejjraph transmitters at Rocky Point and Marion, Mass. The 

 measurements of these stations were made at New Soiithgatc and 

 at Chedzoy, England. The British transmitting stations utilized 

 in measuring the east to west transmission were the British Post 

 OlVire telegraph stations at Lcafield and at Xortholt. The receiving 

 measurements in the I'nited States were initiated at (ireen Harbor, 

 Mass.. and continued at Belfast, Maine and Rivcrhead, L. I. 



The Ri\erhead receiving station, shown in Figs. 2 and 3, is t\|)ical 

 of the receiving stations involved in the measurement program. The 

 interior view of Fig. 3 shows the group of recei\ing measurement 

 apparatus at the right and the loop at the left. The three bays of 

 apparatus shown are as follows: That at the left is the receiving 

 set proper which is, in reality, two receiving sets in one, arranged so 

 that one may be set for measurements on one frequency band and 



