GPS 4-Ex

ATEX Certified GPS, Galileo, Glonass and BeiDou antenna for Mast Mounting in Hazardous areas


  • Passive quadrifilar helix antenna for fixed installation.
  • Covering GPS, Galileo, Glonass and BeiDou.
  • The antenna is specified as ATEX antenna for use in zone 2 in potentially explosive areas.
  • The antenna is to be used as a receiver only.
  • Before installing the antenna, read the ATEX Product Manual carefully.
  • The antenna is suitable for use in gas groups IIA, IIB and IIC in zone 2.
  • Right-hand circularly polarized antenna (RHCP).
  • The circularly polarized antenna minimizes the fading effect often encountered in environments with reflecting obstacles.
  • Mounting bracket available to make the perfect installation for your specific needs.
  • All metal parts in the antenna are DC-grounded. Consequently, the antenna shows a DC-short across the coaxial cable.
  • Maximum recommended cable loss between antenna and receiver is 9 dB (e.g. 20 m RG 58 A/U-XLL) for receivers with acquisition sensitivity of < - 142 dBm. Higher cable loss can be tolerated for receivers with lower acquisition sensitivity.


Model GPS 4-Ex
Frequency 1570 - 1650 MHz
Antenna Type Quadrifilar helix antenna
Polarisation Circular
Pattern Type Hemispherical
Impedance 50 Ω
Gain 2 dBic (0 dBd)
VSWR < 2.0:1
Maximum Input Power Receiver only
Bandwidth 75 MHz
Antistatic Protection All metal parts DC-grounded (Connector shows a DC-short)
Wind Area 0.0072 sq. m / 0.08 sq. ft
Connection(s) N(f)
Materials Shroud: Polyrethane - Coated glass fiber
Mounting bracket: Stainless steel
Installation Torque SM-MAS
Mounting brackets 6.5 - 7 Nm
Colour Blue
Height 250 mm / 9.84 in.
Wind Load 9.6 N (160km/h)
Diameter 25.5 mm / 1.00 in.
Weight 0.45 kg / 0.99 lb
ATEX Marking II 3G Ex nA IIC T6
Operating Temperature Range -30°C to +60°C
Survival Wind Speed 200 km/h
Ingress Protection IP66

Diagram and Mounting



Ordering Designations

Model Product No.
GPS 4-Ex 115000029
ATEX grounding kit 115000100
SM-MAS 110000196