I had intended to DIN-mount the PSR-600 but as you can see there was no room. The 396XT and 996XT were added later. The 396XT is used in close-call mode only. The Larsen 150/450/800 antenna feeds both radios via a Stridsberg multi-coupler. Toggle switches on the dash control the power supply to the 396XT and route the speaker output of the PSR-600 to either the car's audio system or the scanner internal speaker so I can still listen to the AM/FM if needed.