Installation Instructions
GPSD[C], SHK[G] & FINDC Series
SW3-735 - v2.1
1. Introduction
The MiMo Sharkee OEM style antenna is available in a number of variants.
GPSD/SHK[G] series features 2x2 MiMo for 4G/5G, an active GPS/ GNSS antenna with 30dB gain LNA (GPSD/SHKG) and the option of 2x2 or 3x3 MiMo
Wifi. GPSD version has a M6 stud (under a blanking cover) for an optional comms whip. GPSDC series features an SMA socket, in place of the M6 stud,
which enables a coaxially fed antenna to be fitted. The FINDC is as per the GPSDC type, but does not include the GPS/GNSS function. This antenna is
suitable for fitment to vehicle panels of up to 8mm (0.31”). 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
For optimum performance, it is recommended that the antenna is fitted on a conductive (metal) panel. For GPSD version, if a whip will not be fitted, and for
GPSDC, SHK[G] and FINDC types, it is possible to mount the antenna on a non-conductive panel with acceptable performance for all the antenna functions.
For GPSD type, if a whip is to be used, then the antenna must be fitted on a conductive ground plane - recommended size is 1⁄2 wave length diameter at the
lowest frequency of whip operation. To calculate this size, use formula 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 earthing washer
must make 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.
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, carefully removing any burrs and
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.
Important Note Regarding Sealing
-
In order to ensure that the installation is properly sealed against the mounting surface, care must be
taken regarding curvature of the mounting panel. It is highly recommended to install the antenna on a clean, flat and level surface. After installa-
tion the compression of the rubber boot against the mounting panel should be checked and a small bead of neutral cure silicone sealant can
be applied around the periphery of the mounting boot if required.
Hole
∅
19
Fig.1
Electrical Safety Note
The GPSD, SHK[G] & GPSDC contain 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 overcurrent protection of 1A maximum.
