Simplified mobile antenna base mounting structure

Claim 1

A mobile antenna base mounting structure comprising an electrically insulative housing having a first cylindrical recess in the lower surface thereof, a second cylindrical recess relatively small than said first recess extending coaxially upwardly from said first recess, and an aperture extending from said second recess coaxially upwardly through the upper surface of said housing; an internally threaded metallic insert secured in said first recess and adapted to engage an antenna mount; an annular groove disposed in the outer surface of said metallic insert, engaging the inner surface of said first recess in said housing, and having a width and depth selected to limit the force required to separate said metallic insert from said housing to a predetermined level; an antenna whip having an electrical contact at the lower end thereof and extending upwardly through said second recess and aperture to the exterior of said housing; and a compression spring disposed coaxially about the antenna whip in said second recess such that when said metallic insert is threaded onto an antenna mount said spring is compressed, bears upon the electrical contact on said antenna whip, and exerts downward pressure thereon.