This control panel provides a means for remote tuning of one ARINC 546 COMM transceiver, two ARINC 547 NAV receivers and one ARINC 521D DME receiver.  It is capable of tuning COMM frequencies between 118.000 and 136.975 MHz in 25 KHz steps, and NAV frequencies between 108.000 and 117.950 MHz in 50 KHz steps.  Additionally, this unit provides a DME resistive bridge output whose frequencies are paired to the NAV frequencies.