59 



Fifty-wait transmitter. — This transmitter was tuned to SO meters 

 for the cruise, on account of the heavy atmospheric conditions pre- 

 vailing. Messages were exchanged with amateur stations at Water- 

 bury, Conn., Lincohi, N. II., and Milton, N. Y. In all cases the 

 signals were reported good. NKF was copied every night on 71.5 

 meters without difficulty. The signal strength varied between 8 

 and 9. There seemed to be no trouble for the short waves to pierce 

 the heavy static that existed around the Tail of the Banks at this 

 time. 



It is estimated that approximately 160,000 words were received 

 and transmitted during the cruise, and the transmitters were in 

 continuous operation 72 per cent of the cruise. 



CRUISE, JULY 9-13, "MODOC" 



Owing to the short cruise and the patrol being practically over, 

 very little traffic was handled. All official traffic was routed to 

 NBD via the Tampa at Halifax. No difficulties were experienced 

 with the transmitter. It is estimated that approximately 15,000 

 words were sent and received and that the apparatus was in opera- 

 tion approximately 68 per cent of the total time of the cruise. 



On this cruise telephone experiments were carried out with passing 

 vessels, and Cape Race, distant about 350 miles. The signals were 

 reported very good, with no mush. 



MISCELLANEOUS 



Experiences from the 1925 ice patrol and the previous patrols 

 show that no regular, reliable communication can be maintained 

 with NBD (Bar Harbor) with the present equipment at that station. 

 This, however, does not refer to the personnel, as their cooperation 

 was perfect, as far as it could be observed — all possible effort being 

 made to maintain 100 per cent communication. A fairly consistent 

 schedule was kept during March, April, and parts of May, when the 

 atmospheric conditions were good, but during the latter part of May 

 and the remainder of the patrol it was impossible to keep a direct 

 schedule, owing to the low power of the station, the signals scarcely 

 being audible, which made it impossible to receive the acknowledg- 

 ment of traffic transmitted. As stated before, this condition made 

 it necessary to establish a relay station in Halifax. Such an arrange- 

 ment, however, is not desirable and certainly not conducive to the 

 greatest efficiency. 



It is believed that a different wave length from that of 1,621 

 meters should be used for CW traffic with Bar Harbor, as that wave 

 length is very congested, due to harmonics from certain high-power 

 stations. 



72733— 26t 5 



