ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 157)

Communication 4-39
Note: The material of which the enclosure housing the
EMU is made may impact the strength of the signal
available. If the material is significantly reducing the
signal strength, consider installing the wireless antenna
(currently mounted inside the EMU) outside the enclosure.
If this requires drilling holes in the EMU and/or enclosure,
take the appropriate measures to seal the holes around the
cable once the antenna is installed to ensure protection for
the internal components against the elements.
7. Backfill the trench between the manhole and the location at
which the EMU is installed, and restore the landscape as
necessary.