Chapter 4 _____________________________________________________ Technical specifications
VAISALA_______________________________________________________________________ 23
CHAPTER 4
TECHNICAL SPECIFICATIONS
This chapter provides the technical data of the antenna set.
General Specifications
Table 2 General Specifications
Property Value
Frequency range 400 - 406 MHz
Directivity 3.5 dBic
Polarization Horizontal
Horizontal pattern Omnidirectional
Telemetry Range
150 km
Amplifier
Gain 20 dB typical
Noise figure <2 dB
Power input +10 … 12 VDC, typically 130 mA through
RF cable
Output impedance Output impedance 50 ohms, VSWR <1.5
GPS Antenna Module
Primary power +5 volts DC (±10%)
Power consumption 22 mA, 0.11 watts (nominal)
Output impedance 50 Ohms
Frequency L1 (1575 MHz)
Polarization Right-Hand Circular Polarization (RHCP)
VSWR 2:1
Axial Ratio 2 dB at zenith, 10 dB above 10° elevation
Gain 35 dB (nominal)
Noise 2.75 dB (nominal)
Pass-band width 50 MHz
Azimuth coverage 360° (omni-directional)
Elevation coverage 0° to 90° elevation (hemispherical)
Mechanics
Connector UHF Antenna: Coaxial N-type female
GPS Antenna: Coaxial TNC-type female
Diameter assembled 1133 mm
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