Antenna couplings

A coupling for a vehicle-mounted antenna for coupling the antenna to a mount attached to a part of the vehicle while permitting detachment of the antenna and comprising:

• a shell member having an axially extending internal recess;
• a stud member having a first portion disposed in said recess and a second portion extending axially thereof;
• said members being relatively moveable, both axially and rotatably, and respectively having means carried thereby enabling the coupling to be attached to the base mount and enabling the antenna to be attached to the coupling;
• one of said members having a lock pin fixed thereto;
• the other of said members having an internal surface presenting a plurality of interconnected openings circumferentially spaced from one another for receiving the pin, each opening presenting a dead-end stop impermissive of axial separation of the members when the pin is disposed therein while yet permitting rotation and positioning of the pin in adjacent slots;
• a spring means applying an axial force between said members tending to hold the pin disposed in an opening;
• and said other member having an axially extending slot therein interconnected with and positioned between an adjacent pair of openings and not having a stop which, when the pin is aligned therewith, is permissive of the members being separated axially along with the antenna carried by one of the separated members, whereby knowledge of the location of the slot allows quick separation but lack of knowledge requires hunting for the slot.