I also have two VRS750 P25 cross-band repeaters in the trunk. They are interfaced with the UHF & VHF Astro Spectras. When activated, I can use my XTS portable radios remotely that use the high-power radios for extended range and output. There's a Kenwood TM-D700 at the top, Yaesu FT-857D, Code 3 Light/Siren/PA control (disabled), Motorola UHF Astro Spectra, Uniden BCD996T, Motorola XPR4550 VHF DMR Radio, Motorola XPR4550 DMR UHF Radio, two cup holders at the bottom (not visible). On the right side of the console is the control head for the Motorola VHF Astro Spectra, and on the top left of the side of the console is the Alinco DR-235 222 MHz transceiver probably not visible. Everything is controlled by relays that activate when the accessory/ignition is turned on. When everything is off, measured draw on the battery is about 9 milliamps. Everything was installed and is maintained by certified mechanics and experienced installers. I'm too old to get under and next to the dashboard, trunk, or hood. My health doesn't allow it anymore although that's what I used to do!