A special coupling box is mounted on the inside of the glass directly under the antenna foot.

When the chain was pulled, the lever raised the pin out of the coupling box and locked it into place.

If the antenna assembly needs to be transferred to another vehicle, the coupling box and the mounting foot can be removed without trace.

This gearbox is manufactured by Brevini in Italy, with a coupling box made by PTG.

Stubs for RTs, the BC, or BMs, are generally connected to the bus through coupling boxes, which may provide a single or multiple stub connections.

The range includes reliable TETRA glass mount antennas that feature a solid state/pcb type coupling box with FME coax connection and ¼ wave whip.

The antenna is made of two parts, a coupling box which is a small 1 inch square enclosed aluminium box, fits on the inside of the rear window and then it matches up to an outer base unit and whip.