Liftmaster External Antenna

The EXT-ANT J-F Coaxial Antenna Kit for LiftMaster Commercial Garage Door Openers is available at Action Industries. This kit is required when installing a coaxial antenna onto a LiftMaster Commercial Operator Logic Board, as standard coaxial antenna kits are incompatible. The EXT-ANT kit includes two components: the coaxial antenna (F-type) and the adapter (J-type). The adapter, made of coaxial cable, securely locks into place on the logic board, while the other end is positioned inside the opener’s frame, allowing the F-type coaxial antenna to be easily screwed in.

INSTALLATION:

1. Disconnect power from the operator.
2. Remove electrical box cover.
3. Connect coaxial cable to “AUX ANT” on logic board.
4. Remove the nut and washer from the coaxial cable and route the cable through side wall of electrical box.
5. Secure the cable by re-installing the washer and nut.
6. Connect antenna to coaxial connector on the outside of the electrical box.
7. Cut the purple antenna wire from the logic board.
8. Replace cover.
9. Reconnect power. Test the system.