cell phone antennas

[JHZR2]

Hi,

My 83 300D has a cell phone antenna at the top center of the rear window. I kind of doubt that it was an OEM installed option, as I dont knwo if there were lots of cell phones in 1983. However, a number of the 300Ds around here that are like mine all have the same antenna on them. What I would liek to know is if anyone else who has one of these through-the-glass antennas knows wha type of wire goes from what Id guess was the cell phone end to the antenna. If it is coax, Im in luck, as I could use it with my CB radio, even though it is a bit short... Regardless, I am interested in where the end of the cable is. There is no mount for a phone in the car, so that doesnt help me, and Ive looked all around the console, etc. and cannot find the end that I guess would be connected into the phone. If anyone has had experience, or perhaps one of these similar antennas, Id like any info on where I might look for the wires. Any info is most appreciated. Thanks

JMH