A Tallysman Accutenna®
TW3400/TW3402 GPS/GLONASS Antenna
The TW3400/TW3402 employs Tallysman’s unique
Accutenna technology covering the GPS L1, GLONASS
L1 and SBAS (WAAS, EGNOS & MSAS) frequency band
(1574 to 1606 MHz). They are especially designed for
precision industrial, agricultural and military
applications. . They provide truly circular responseover the antennas’ entire bandwidth thereby
producing superior multipath signal rejection.
The TW3400/TW3402 feature a highly circular dualfeed wideband patch element, with a two stage Low
Noise Amplifier, comprised of one input LNA per feed,
a mid section SAW to filter the combined output, and a
final output gain stage. This configuration provides
excellent axial ratio that is constant across the full
frequency band.
An optional tight pre-filter isavailable on the TW3402 to protect against saturation
by high level sub-harmonic and L-Band signals.

TW3400 Dimensions (mm)Flat radome is shown, Conical Radome also available

The TW3400/TW3402 is housed in a permanent
mount industrial grade weather-proof enclosure. Two
options for pole mounting are available an L-bracket(P/N#23-0040-0) or a pipe mount (P/N#23-0065-0).

Applications
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High Accuracy & Mission Critical Global Positioning
Precision Agriculture, Mining & Construction
Military & Security
Avionics
Law Enforcement & Public Safety
Fleet Management & Asset Tracking

Features
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Great axial ratio: 1 dB typ.
Low noise LNA: 1 dB
High rejection SAW filter
High gain LNA: 26 dB typ.
Low current: 13 mA typ.
Wide voltage input range: 2.5 to 16 VDC
IP67 weather proof housing

Benefits•••••••Excellent circular polarisation
Excellent multipath rejection
Excellent signal to noise ratio
Great out of band signal rejection
Increased system accuracy
Ideal for harsh environments
RoHS and REACH compliant

TW3400/TW3402 GPS/GLONASS Antenna
Specifications
AntennaArchitecture
1 dB Bandwidth
Antenna Gain (with 100mm ground plane)
Axial Ratio (over full bandwidth)

Dual, Quadrature Feeds
30 MHz4.25 dBic<1 dB @zenith., 3 dB max.

Electrical
Filtered LNA Frequency Bandwidth
Polarization
LNA Gain (1575.42 to 1606 MHz)
Gain flatness
Out-of-Band Rejection<1500 MHz
<1550 MHz>1640 MHzVSWR (at LNA output)
Noise Figure
Supply Voltage Range (over coaxial cable)
Supply Current
ESD Circuit Protection

1574 to 1606 MHzRHCP
28dB min (TW3400) 26 dB min. (TW3402),+/- 2 dB, 1575 to 1605 MHz>32 dB (TW3400)>50dB (TW3402)>25 dB>50dB>35 dB>75dB<1.5:1 typ. 1.8:1 max.
1.5dB typ.
(TW3400)
3.5 dB typ (TW3402)
2.5 to 16 VDC nominal (12VDC recommended maximum)
13 mA typ.
15 KV air discharge

Mechanicals & Environmental
Mechanical Size
Operating Temp. RangeEnclosure
WeightAttachment Method
Environmental
ShockVibration
Salt Spray

66.5 mm dia. x 21 mm H-40 to +85 °C
Radome: EXL9330, Base: Zamak White Metal (M18x1thread)
150 g
Permanent ¾” (19mm) through hole mount
IP67 and RoHS compliant
Vertical axis: 50 G, other axes: 30 G
3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G
MIL-STD-810F Section 509.4

Ordering Information
TW3400 – GPS/GLONASS antenna33-3400-xx-yy-zzzz

TW3402 -33-3402-xx-yy-zzzz

Where xx = connector type, yy = shape and colour of radome, and zzzz = cable length in mm (where applicable)
Please refer to the Ordering Guide ( http://www.tallysman.com/wp-content/uploads/Current-OrderingGuide.pdf)) for the current and complete list of available radomes and connectors.

Tallysman Wireless Inc
36 Steacie Drive
Ottawa ON K2K 2A9 Canada
Tel +1 613 591 3131

Fax 613 591 3121

sales@tallysman.com
The information provided herein is intended as a guide only and is subject to change without notice. This document is not to beregarded as a guarantee of performance. Tallysman Wireless Inc. hereby disclaims any or all warranties and liabilities of any
kind. © 2015 Tallysman Wireless Inc. All rights reserved.
Rev 4.6