Will the Garmin AT SL30 Nav/Comm interface with a DME?
Yes, but in most cases, the DB30 adapter from Garmin AT is necessary. The SL30 does not output a standard DME format in relation to most vintage and standard DME systems. The DB30 takes the format from the SL30 and allows for the interface to King and Collins DME units. Some of these interfaces include BCD, 2×5 code, and Slip Code. It should be noted that the DB30 2×5 tuning interface is not compatible with the ARC/Cessna RTA-476A or Narco DME transceivers.