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 FR 22481 , Aug. 21, 1973]