The VIAVI 3515LSR is used for operational verification testing of life support radio systems: 406 MHz COSPAS/SARSAT beacons, 121.5 MHz beacon and 243 MHz beacon. A key component of the 3515LSR Test System is the 3515AR Test Set. The 3515AR Test Set is a complete communication service monitor; packaged in a rugged magnesium alloy case and weighing less than 8 lbs. Not only do you have the ability to support all life support and SAR beacon applications, but you have the flexibility to test VHF and UHF radios, tactical radios, vehicle installations, and antennas.