Format of Amateur Radio Logbook :

Callsign Date IST  From IST          To Mhz      Band Mode His Report My Report Name Qth etc TX PWR Signature


Callsign Callsign of the station in QSO
Date Date of the QSO
IST FROM Time in IST-begining of QSO
IST TO: Time in IST- end of QSO
Mode Mode of Transmission
His Report Report you have given to other station
My Report Report received from other station
Name/QTH etc Name & Location of station for reference
TX POWER Transmitter Power used for above QSO
Signature Signature of the Station Operator/Operator

Now there are lot of computer programs to keep logbook.