Specifications include, but are not limited to:The South Carolina Law Enforcement division is seeking to upgrade three MD 500E helicopters with Garmin GPS/Radio systems to accommodate the FAA required ADS-B upgrade. The systems we are proposing are two Garmin GTN 650H units with WAAS and three Garmin GTX 345 Transponders. N500SC: 1 - Remove the existing GNS 430 non WAAS unit and upgrade to a Garmin GTN 650H (labor). - GTN 650H - GPS/SiriusXM Antenna 2 - Install a GTX 345 Transponder replacing the existing transponder. This will display ADS-B traffic and weather on the GTN 650 as well as a portable device via blue tooth (labor). - GTX 345 ADS-B In/Out Transponder - Garmin Encoder 3 - A $3,000.00 rebate will be applied if the installed Garmin 430 GPS can be removed along with the radio rack and back, and sent back to Garmin by March 27, 2018. 4 - All radio removal and installation will be performed at the SLED Hanger facility. N502SL: 1 - Remove the existing GNS 430 non WAAS unit and upgrade to a Garmin GTN 650H (labor). - GTN 650H - GPS/SiriusXM Antenna 2 - Install a GTX 345 Transponder replacing the existing transponder. This will display ADS-B traffic and weather on the GTN 650 as well as a portable device via blue tooth (labor). - GTX 345 ADS-B In/Out Transponder - Garmin Encoder 3 - A $3,000.00 rebate will be applied if the installed Garmin 430 GPS can be removed along with the radio rack and back, and sent back to Garmin by March 27, 2018. 4 - All radio removal and installation will be performed at the SLED Hanger facility. N504SL: 1 - Install a GTX 345 Transponder replacing the existing transponder. This will display ADS-B traffic and weather on the GTN 650 as well as a portable device via blue tooth (labor). - GTX 345 ADS-B In/Out Transponder