[138]         COMMUNICATION INTELLIGENCE SUMMARY, 2 November, 1941
 
General.-Traffic volume normal for Sunday. Receiving conditions were  fair but bulk of traffic derived from the major shore circuits. Solution  of new call system progressing satisfactorily but volume of accumulated  traffic in new system not yet large enough to permit more than casual  identification of individual calls. The number of alternate calls for  major commands is increased over last system. So far there are seven  alternate calls for the Combined Fleet.
Third Fleet traffic is still on a very high level. The combined air  Force traffic is also very high with the Commander of the Combined Air  Force originating many dispatches. It appears that he is now in Taiwan.  Traffic to SAMA and BAKO is on a very high level. Tokyo and The China  Fleet Intelligence bureaus are originating periodic dispatches, these  from Tokyo being prefixed WIWI. There were several high precedence  dispatches from Tokyo with the major fleet commanders as addressees.
 
(FROM: U.S. CONGRESS JOINT COMMITTEE ON PEARL HARBOR ATTACK HEARINGS; PT.  35, THE CLAUSEN INVESTIGATION, PP. 62-81. EXHIBIT "A" DAILY COMMUNICATION INTELLIGENCE SUMMARIES)