10 by a plurality of screws 28 which work in the angularly spaced radially slotted holes 29 and operate the conventional hook structures 27 those structures extend through aperture 12 and engage the inner face of panel 10 the generally circular bracket rim 24 is typically separated from the outer panel surface by the sealing and protective gasket 25 bracket boss 30 is provided with the coaxial through bore 32 which has an inwardly facing internal shoulder 34 close to its upper and outer end the bore is provided with the internal threads 36 inwardly of shoulder 34 for connection of the cable coupling fixture to be described a second set of coaxial threads 38 on the external surface of boss 30 opens outwardly in position to receive the threads 104 of an antenna assembly which typically comprises the antenna base 100 and the antenna proper 108 coaxial cable 60 for connecting the antenna and transceiver typically comprises the central live conductor 62 preferably stranded for increased flexibility and the surrounding ground conductor 64 typically of braided copper the live and ground conductors are separated by the relatively thick annular sheath 66 of high quality solid dielectric material the outer protective cover 68 of tough flexible insulating material normally has an outer diameter of about 3 16 inch in accordance with the invention the antenna end of cable 60 is equipped with a connector of the preferred type shown at 70 that structure comprises the ground terminal member 72 the retaining ferrule 80 the annular insulator 82 and the small flanged sleeve 90 which may comprise a commercially available metal eyelet of suitable size terminal member 72 includes the body portion 74 with the.