Fcc Legal Information - Sierra Wireless AirPrime HL77 Series Product Technical Specification

7. FCC Legal Information

The HL7718 and HL7748 modules have been granted modular approval for mobile applications.
Integrators may use the HL7718 or HL7748 modules in their final products without additional FCC
certification if they meet the following conditions. Otherwise, additional FCC approvals must be
obtained.
1. At least 20 cm separation distance between the antenna and the user's body must be
maintained at all times.
2. To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only
exposure condition must not exceed:
For HL7718: 2 dBi in Band 13
For HL7748:
9.0 dBi in Band 2
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6.0 dBi in Bands 4 and 12
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3. The HL7718 and HL7748 modules must not transmit simultaneously with other collocated
radio transmitters within a host device.
4. The RF signal must be routed on the application board using tracks with a 50Ω characteristic
impedance. Basically, the characteristic impedance depends on the dielectric, the track width
and the ground plane spacing. In order to respect this constraint, Sierra Wireless
recommends using MicroStrip or StripLine structure and computing the Tracks width with a
simulation tool (like AppCad shown in the figure below and that is available free of charge at
http://www.agilent.com).
41110555 Rev 1.0 November 01, 2017 49