Installation Instructions
GPSB Series
SW3-606 - v1.3
1. Introduction
The GPSB series is a high performance quad function antenna in an OEM style shark fin housing. It incorporates an active GPS antenna with 30dB gain LNA,
a multi-band cellular antenna, a dual band WiFi antenna and mounting bush for external whip. The GPSB is suitable for fitment to standard vehicle panels of
up to 4mm (0.16”) thickness. Heat shrink tubes are included in the kit, to enable the coaxial connections to be sealed as an extra precaution if required.
2. Mounting requirements and selecting location
This antenna must be fitted on a conductive ground plane of minimum 1⁄2 wavelength diameter at the lowest frequency of operation; to calculate see below:
150 / frequency in MHz = 1⁄2 wavelength (m)
Examples: 150MHz =100cm (39.4”); 400MHz = 38cm (15”); 900MHz =16cms (6.3”).
When fitting on a non-metallic panel, a ground plane plate of suitable size should be fabricated and fitted under the mounting panel. The securing washer
and nut must make a low resistance electrical contact (< 0.2Ω) with the ground plane . Select a mounting location, checking for roof curvature to ensure that
the antenna base will have a flat mounting surface. The antenna should be located as far as possible from surrounding roof mounted items (e.g light bar, air
con unit). Ensure that there is adequate under panel clearance and that there is no double skin panel or cross brace present. Measure to check for central
position if applicable.
4. Fitting the antenna
Remove protective backing from underside of antenna, feed coaxial cable(s) through panel. Position the antenna over the hole ensuring correct orientation
and stick to panel by applying firm downward pressure. Assemble washer and nut from underside and tighten - recommended torque is 5Nm (3.7ft/lbs).
Remove blanking cap and screw comms antenna whip securely to mounting stud (if applicable).
3. Prepare and drill hole
Mask panel area around hole position to protect paintwork and headliner.
Drill a pilot hole, and then increase to 19mm (3/4”), ensuring that drill/cutter bit does not contact headliner. Clean area around
the hole, remove any burrs and carefully remove all swarf.
Remove paint and primer from under panel surface to ensure adequate earth contact by washer and nut. Apply some
petroleum jelly or paint around the hole to prevent corrosion.
Hole
∅
19
Fig.1
Electrical Safety Note
This product contains an active GPS/GNSS antenna (part number SR8-HG30). Rated voltage: 3-5VDC Rated current: 20mA maximum.
The supply to this device must be provided with over-current protection of 1A maximum.
