SiSo Antennas covering all LTE, WiFi & WiMAX frequencies

The SiSo Rooftop Antenna series has been designed specifically for use on trains, trams and buses. Weatherproof and environmentally sealed to IP67, the SiSo antenna can maintain optimal performance in virtually any conditions.

The SiSo range covers 698-960/1710-6000MHz with optional GPS/GNSS with a 26dB LNA. The radiating element is DC grounded and, in versions with a GPS module it is protected by an integrated gas discharge surge arrestor. Housed in a high impact, flame retardant polycarbonate housing, the SiSo series is weatherproof and environmentally sealed to IP67, ensuring that the antenna’s performance is never compromised.

Technical Features

  • Cellular 700-6000MHz.  Covers all LTE, Wi-Fi & WiMAX frequencies used worldwide including GSM-R
  • UHF versions covering 380-430MHz OR 450-470MHZ are also available on request
  • Optional active GPS antenna with built in surge arrestor
  • Compliant with rail standards EN45545, EN50155, EN61373 & EN50121
  • Rugged flame retardant housing with Ultem 1000 PEI & Aluminum base
  • DC grounded antenna
  • Industry standard 4 hole mount
  • Rated IP67 (When installed according to the installation instructions)


  • High speed trains & locomotives
  • Trams
  • Buses / coaches
  • Mass transit systems
  • Heavy duty machinery (quarry trucks etc.)

Electrical Data

  • Frequency Range (MHz): 698-960 / 1710-6000 MHz
  • Peak Gain Isotropic**:

           698-960MHz: 5dBi

           1710-2700MHz: 7dBi

           4900-6000MHz: 10dBi

  • Polarisation: Vertical
  • Typical VSWR* : <2.5:1
  • Pattern: Omni-directional
  • Impedance: 50 Ω
  • Max Input Power (W): 60

*Measured on a 600 x 600mm (2' x 2') ground plane with 1m (3') of low loss cable.

**Measures on a 600 x 600mm (2' x 2') ground plane without cable.

GPS Data

  • Frequency Range: 1560-1612 MHz
  • Impedance 50 Ω
  • LNA Gain 26dB + 3
  • Polarisation: Right Hand Circular
  • Operating Voltage: 3-5V DC
  • Current (Typical): 15mA
  • GPS Antenna EMC Compliance: EN 301 489-1 V1.81 & EN 301 489-3 V1.6.1, EN 50121-3-2:2015

Mechanical Data


Height (N/inc pad): 110mm (4.33')

Width: 87mm (3.42')

Length: 260mm (10.23')

Environmental Specification

  • Operating Temp: -40oC / +80oC (-40oF / +176oF)
  • Radome Material: Ultem 1000
  • Radome Flame Retardance Rating: V0 (UL94)
  • Base Material: Cast Aluminum
  • Sealing: IP67 (When installed according to the installation instructions)

Approvals Data

Regulatory Approvals
  • EN 50155:2007 (Dry heat & Cooling)
  • EN 61373:2010 & EN 50155:2007 (Shock & Vibration)
  • EN 45545:2013 (Fire & Smoke)


Mounting Data

Fixing: 4x mounting holes to suit M12 bolts

Termination Data

  • Comms: 2 x N (female) - DC grounded
  • GPS: TNC (female) - surge protected