Detent UHF tuner with preset memory

A tuning system including in combination:

• a UHF television tuner having a continuously variable tuning shaft, rotation of which is effective to tune said tuner to selectively receive signals from all television stations within the UHF television band;
• a selector shaft;
• means for establishing a plurality of equally spaced detent positions for said selector shaft, one for each of said television stations;
• means interconnecting said selector shaft and said tuning shaft;
• a rotatable turret having a plurality of cam members mounted thereon;
• means coupling said turret to said selector shaft, said coupling means including means for rotating said turret a predetermined single increment in response to the rotation of said selector shaft by a plurality of successive detent positions;
• a fine tuning shaft;
• means for selectively coupling a first predetermined one of said cam members to said fine tuning shaft when said selector shaft is positioned in a detent position within a first predetermined group of adjacent detent positions, and for coupling a second predetermined one of said cam members to said fine tuning shaft when said selector shaft is positioned in a detent position within a second predetermined group of adjacent detent positions;
• and
• cam follower means operatively coupled to the one of said cam members selectively coupled to said fine tuning shaft and to said tuning shaft, said cam follower means being responsive to movement of the cam member coupled thereto to rotate said tuning shaft over a predetermined range of rotation.