/BATTERY TEST, BAER PWRIOFRARM ARTEX ELT 406-Ni0A with remote switch and 'al' indicator. beacon transmits on 121.5, 243.0 and 4C6.025 MHz, two year Alkaline Batboy. tail boom mounted VHF anomie Universal Navigation CUR 120: CVR Recorder with ultrasonic Underwater Locator Beacon: Control Panel with Headphone J