... 5PPM (2PPM for TKR-750) TCXO modules, 100% duty RF power amplifier (25W output), integrated die-cast heat sink and forced-air ... a glance, including transmit, receive, battery backup, and DC power. If the transmitter or receiver becomes unlocked, the LEDs flash ... with other features and capabilities. 13. BATTERY BACKUP SYSTEM Several power-saving features, including a display- off function, help to ...