30 



is reached which approximates the capacity of the radio equipment 

 used. This peak is maintained until about a month from the end of 

 the season, when increasing atmospherics, combined with a great 

 falling off of ice about the Grand Banks region, cause the trafl&c 

 volume to dwindle again. 



No new departures in radio procedure or equipment were instituted 

 during the 1930 season. The transmitting and receiving apparatus on 

 each ice patrol vessel consisted of the following items: 



One T-2 2-kilowatt transmitter for ICW, CW, and phone. 



One T-4 200-watt transmitter for ICW and CW. 



One T-1 50-watt transmitter for ICW, CW, and phone. 



One XA 500-watt transmitter for CW. 



Two C. G. R. 25 receivers for 300-6,000 meters. 



One S. R. A. 9 receiver for 10-200 meters. 



One radio compass. 



Subject to a few minor changes from time to time, the schedules 

 listed below were kept throughout the season by the ship on duty. All 

 times are plus three zone times which the ships keep while in the ice 

 regions. Between schedules ice and water temperature reports were 

 received from shipping. In addition, much other off-schedule traffic 

 was handled. 



Time Remarks 



0000 Copy Washington (NAA) weather. 



0400 Copy Washington (NAA) press. 



0500 Schedule with Cape Henry (NHG). 



0600 Get bearing from Cape Race (VAZ). 



0800 Broadcast ice report on 425 Kcs. ICW. 



0830 Schedule with Cape Race (VAZ). 



0848 Schedule with Washington (NSS) on 8270 Kcs. 



0900 Broadcast ice report on 175 Kcs. CW. 



1030 Schedule with Bar Harbor (NBD). 



1115 Copy Cape Race (VCE) weather. 



1200 Copy Washington (NAA) weather. 



1355 Tune in Washington (NAA) time tick. 



1600 Schedule with Cape Henry (NHG). 



1800 Get bearing from Cape Race (VAZ). 



2000 Broadcast ice report on 425 Kcs. ICW. 



2030 Schedule with Cape Race (VAZ). 



2100 Broadcast ice report on 175 Kcs. CW. 



2130 Schedule with Washington (NSS) on 8270 Kcs. 



2230 Schedule with Bar Harbor (NBD). 



2315 Copy weather from Cape Race (VCE). 



There was some minor trouble with both the sending and receiving 

 apparatus, but nothing went wrong which could not be repaired by the 

 ship's force. There were no serious breakdowns of communications. 



