RADIO TELEPHONE SERVICE TO SHIPS AT SEA 



427 



EASTBOUND 



DEC. 1929 



TIME OF DAY — EST 

 AM NOON PM 



6 8 10 12 2 4 6 



8 10 



NO, 



OF 



tALLS 



-r 



"T" 



n r 



NOON 



DIST. 



AMBROSE 



SUN. N.Y.-SHIP 

 8 SHIP- NY 



LEFT N.Y 

 12 PM 



^^r^ 



10 



MON. NY -SHIP 

 9 SHIP- NY 



13 



TUE. N.Y-SHIP 

 10 SHIP-NY. 



I 8 _ iHIGH N OISE 



13 



HEAVY CRACKLES' 



WED. NY-SHIP 

 II SHIP-N.Y 



FIGURES bENOTE APPROXIMATE 

 FREQUENCY IN MEGACYCLES 



NOISE 

 NOISE 



THUR. N.Y-SHIP 

 12 SHIP-NY 



LOW FIELDS, NOISE 



?I?i?L 



FRI. 13 



LOW FIELDS, NOISE --^-r"^— 

 8 ' 4 



ARRIVED CHERBOURG 



170 



7 20 



1270 



1820 



2390 



WESTBOUND 



TUE. 17 



WED. N.Y-SHIP 

 18 SHIP-N.Y 



THUR, N.Y-SHIP 

 19 SHIP-N.Y 



FRI, N.Y-SHIP 

 20 SHIP- NY 



SAT N.Y-SHIP 

 21 SHIP-N.Y 



SUN. N.Y-SHIP 

 22 SHIP-NY 



MON. N.Y-SHIP 

 2 3 SHIP-NY 



TUE. N.Y-SHIP 

 24 SHIP-NY. 



TOTAL 

 ENTIRE N>: -SHIP 



TRIP SHIP-NY 



LEFT CHERBOURG ® 



LOW FIELDS, ship's MOTOR NOISE --5--I-?. — 



LOW FIELDS — T--r— - 

 4 ' 8 



CRACKLES^"^®^-- 

 HIGH NOISE-- 



QRM ship's SET i^ 



LOW FIELDS 



8 ' 4 

 l4iai 4 NOISE 



8 W 8 



-„„^...„. ^^, QRM0N4MCn 



QRM SHIP S SET 13 I 4 iS iM i8i4 



.CRACKLES LOW-FllilDSa CRACKLES ^ '« ' ^ 



13 



xl*_A_l. 



QRM SHIPS SET^ 

 ± i L 8 | 4\ 8_ 



ARRIVED 

 AMBROSE LIGHT 



_L 



J_ 



a_ 



_L 



_L 



_l_ 



246 8 10 12 2 46 8 



AM NOON PM 



TIME OF DAY —EST 



10 



18 



28 



32 



46 



151 



2640 



2100 



1530 



1110 



680 



195 



DOCK 



Fig. 16 — Transmission results between 5. 5. Leviathan and Xew York. 



