PART V - SIWMAHT CP OfTilATIONS (COBT) 
(3) Heavy station interference (Brazil^ Denmark., Jipan, Spain, 
U«S» and Russia) was noted on the A1 end A2 circuits duidng hours of 
darkness, Good to excellent cocimnioations existed during ell day¬ 
light hours., The higher frequencies of 22545 end 25380 kilocycles were 
generally clear of interference and afforded good to excellent signal 
strengths o 
(4) The boon antenna installed at CGRAD5TA Now Orleans to aorcice 
ROC&AWAX went Into operation about mid-September«, Thereafter., an aver¬ 
age signal of strength "three” increased to “five" when this antenna 
was employed* 
(5) Continuous watches were maintained in all ports and cceffijunica¬ 
tion a were generally good except in Guayaquil, Ecuador, end in Callao, 
Peru* Difficulties in these porta were attributed to surrounding moun¬ 
tains* 
(6) In addition to the Coast Guard circuits - ROGKAWAX was required 
to maintain direct communications with WWD, tho Bureau of Commercial 
Fiaheriee station at La*alia, California,, 17105 kilocycles proved to 
be the most reliable frequency of those available to that station* 
Bnthy, status reports and general SASTROP/jC messages were passed to 
this station on five daily aahedulea except for a period from 16-21 
Auguet when one AN/ftt?«23 transmitter failed 0 
(7) Based on the above experience, the following recosaoendatlons 
ere modes 
(a) That the oceanographic frequencies formerly listed aa 
circuit A14 (6246, 8325, 12474, 16626 and 22151 kilocycles, IttTT) be 
returned for usage during tha January-April £ASTR0PAC« This would 
provide sufficient alternate frequencies to be employed r&aa periods 
of heavy interference are encountered 0 
(b) That pem'.oaion be obtained free Cowaan&mt to employ 
C« ©aioslcn on circuit A2 frequencies whenever tho RA'iL mode becomes 
Upgiaaeriqg * The machinery plant performed satisfactorily through¬ 
out the cruise* Fuel cconories were affected by two engine operation 
>&ea running between ooconographio stations* Cruise planning Includ-d 
to be taken* However, becanse of the price of 13 cents a gallon, this 
