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GPS AntennasCXL 70-3/GPS 4/...

Dual Band Antenna for the UHF Band and GPS

Description

This active antenna has been designed for use on the TETRA band and GPS.
The antenna consists of a high-performance 3 dBd glass fibre- encapsulated antenna element and an active GPS antenna. The latter is built into the bottom part of the antenna together with a diplex filter. Only one down lead cable is therefore necessary.
The antenna element is a colinear antenna for the UHF band frequency range within 380 - 430 MHz.
The GPS antenna has a full hemispherical coverage and a built-in high-gain, low-noise amplifier.
The necessary supply voltage (5 V DC) for the amplifier is delivered through the down lead coaxial cable. Up to 30 m of RG 214/U coaxial cable can be used between the antenna and the receiver/transceiver.
By careful choice of materials, the CXL 70-3/GPS 4/... is designed to withstand the roughest of climate conditions, ensuring many years of trouble-free service.

Specifications

Electrical

Model

CXL 70-3/GPS 4/...

Frequency

380 - 400 MHz, 410 - 430 MHz

Antenna Type

Collinear antenna element / Quadrifilar Helix Active antenna

Max. Input Power

25 W

Polarisation

Vertical

3 dB Beamwidth, E-Plane

30 °

3 dB Beamwidth, H-Plane

Omnidirectional

Impedance

50 Ω

Gain	3 dBd (5.2 dBi)

VSWR

< 2.0:1

Bandwidth

14 - 20 MHz dependent on model

Mechanical

Connection(s)

N(f)

Materials

Radome : Polyurethane-coated glass fibre
Mounting bracket : Seawater resistant aluminium, epoxy-coated

Colour

White (RAL 9003)

Wind Area

0.076 sq. m / 0.82 sq. ft

Wind Load

97 N (160 km/h)

Height

Approx. 1950 mm / 76.77 in.

Weight

Approx. 3 kg / 6.61 lb.

Mounting

On 27 - 65 mm / 1.06 - 2.56 in. dia. mast tube

GPS Antenna

P1dB (GPS Amplifier)

Approx. 10 dBm

Gain (GPS)

> 32 dBi

Noise Figure (GPS Amplifier)

< 3 dB (typ.)

Gain (GPS Amplifier)

> 30 dB (typ.)

Selectivity (GPS Amplifier)

> 20 dB down @ ± 100 MHz

VSWR (GPS Amplifier)

< 2:0:1

Frequency (GPS)

1575 MHz

Power Supply (GPS)

5 ± 0.5 V DC (3 V resp. 12 V on request)

Current Consumption (GPS Amplifier)

Approx. 44 mA

Polarisation (GPS)

RHCP

Impedance (GPS)

50 Ω

Environmental

Operating temperature range

-30 °C to +70 °C

Ingress Protection

IP56

Ordering Designations

Model	Product No.	Description	Frequency
CXL 70-3/GPS 4/TETRA-l	112000052		380 - 400 MHz
CXL 70-3/GPS 4/TETRA-h	112000053		410 - 430 MHz
Accessories
PRO-DIPX 1000/1550-DC-H HP	200001998	Diplexer

Typical radiation pattern (E-PLANE) UHF Band

Typical radiation pattern (H-PLANE) UHF Band

Typical Gain and VSWR curve

Multi-Purpose Mounting Bracket

Connection Diagram

Alternatively, filter type DIPLEXER DIPX 1000/1550-DC-H can be used. Either filter to be ordered separately.

Typical Response curves for GPS

Typical radiation pattern (H-PLANE) for GPS