5.1.3 Approved Antenna Types
To maintain modular approval in the United States, only the tested antenna types are used. It is permissible to use different antenna, provided the same antenna type, antenna gain (equal to or less than), with similar in-band and out-of band characteristics (refer to specification sheet for cutoff frequencies).
For the WILCS02PE, the approval is received using the integral PCB antenna.
For the WILCS02UE, approved antennas are listed in the WILCS02 Module Approved External Antenna.