[Antennas] Info on an antenna

[Ray Brown]

   Howdy, everyone. I got (given to me) an old Motorola antenna.
 The model number is TAD6073A, s/n 274CMN1033, and it also
 says 150-162 (MHz).
 
   What's the gain of this old guy? :-)  Also, can it be converted
 to any other frequency?
  
   Thanks!
  
                 _Ray_        KB0STN