This is my installation of an Icom IC-7000 UHF/VHF/HF radio, with the Icom AH-3 antenna coupler which is feeding a stainless steel 102" whip antenna.  The IC-7000 has been modified to transmit on just about any frequency 400 Mhz and below (skipping the 200 Mhz band).   I first installed the actual radio under the passenger seat.  This seemed like an OK area, plenty of room and easy access to hide all of the wires under the carpet and kick panels. I then installed the detachable radio face somewhere it would be out of the way, yet easy to operate. In order to use the HF band from at least 7 Mhz to 50 Mhz with out the need to swap 10 different antennas, I decided to go with a 102" whip and an antenna coupler.   This way if i'm out and about, I can always just tie a long wire to the 102" whip and then to a tree or something for more efficient low frequency work. Antenna with delrin roof clip so I can pull in the garage. Here is the base of the 102