Sec. 23.48  Content of station records.

    (a) For each station in the services under this part, except 
stations in the international fixed public control service, the licensee 
shall maintain a technical log of the station operating showing:
    (1) Signature of each licensed operator responsible for the 
operation of the transmitting equipment and an indication of his hours 
of duty.
    (2) Hours of use of each frequency assignment and type of emission 
indicating time of beginning and end of each period of operation and 
points of communication to which each frequency is used (or area if 
service is pursuant to Sec. 23.53).
    (3) Hours of use of each transmitter indicating time of beginning 
and end of each period of operation.
    (4) Power input to the final stage of each transmitter.
    (5) Dates and results of each frequency measurement.
    (b) For stations in the international fixed public control service, 
the licensee shall maintain a technical log of the station operating 
showing:
    (1) Normal hours of operation and dates and times of interruptions 
to service.
    (2) Dates and results of each frequency measurement.
    (3) When service or maintenance duties are performed, the 
responsible operator shall sign and date the station record giving 
pertinent details of all duties performed by him or under his 
supervision; his name and the class, serial number, and date of 
expiration of his license.
    (c) For each station having an antenna structure which is required 
to be obstruction-lighted, appropriate entries shall be made in the 
station's technical log as required by Sec. 23.39.
[38 1997 FR 22481 , Aug. 21, 1973]