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(Optional) Install the External Radio Module Antenna
To install the optional External Radio Module Antenna, follow these steps:
1. Disconnect the AC power supply from the power source.
2. Remove the Control Panel from the backplate and secure the panel with the Third Hand Hanging Strap
3. Disconnect the battery from the Control Panel.
4. If the Cellular Radio Module is already installed, remove the hinged door from the GC3 Control Panel and pull the
tab to remove the Cellular Radio Module. Otherwise, skip this step and continue with step 5.
5. Remove the three (3) screws that secure the Cellular Radio Module cover and remove the cover.
Cellular Radio Module—Remove Cover
6. Disconnect the antenna from the Cell Radio Module PCB and remove the antenna.
7. Connect the external antenna to the Cell Radio Module PCB.
Cellular Radio Module—Route Antenna Cable
8. Route the external antenna cable out through the slot on the bottom of the module.
9. Replace the Cellular Radio Module cover and secure with the three screws.
10. Secure the antenna cable within the channel on the bottom of the module.
11. Route the external antenna into the Control Panel and insert the Cellular Radio Module into the Control Panel until
it clicks into place.
12. Route the antenna cable through the wiring cutout on the GC3 Control Panel’s backplate.
13. Connect the battery to the Control Panel.
14. Mount the Control Panel on the backplate.
15. Connect the AC power supply to the power source.