33-3742-01-01

## Tallysman 

## A Tallysman _Accutenna_[®] TW3740 / TW3742 Hi h Gain Multi-Constellation Antenna g 

The TW3740 / TW3742 is a precision high gain GNSS antenna covering the BeiDou B1, Galileo E1, GPS L1, GLONASS L1 and SBAS (WAAS, EGNOS, QZSS & MSAS) frequency band (1557 to 1606 MHz).  It employs Tallysman’s unique _Accutenna[®]_ technology providing truly circular polarized signal reception through the entire bandwidth of the antenna, thereby providing superior multipath signal rejection.  It is especially designed for precision timing, industrial, agricultural, military, and other precision applications. 

The TW3740 features a three 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. 

The TW3742 adds an additional pre-filter to provide extra strong protection from near frequency and strong harmonic signals. 

TW3740 / TW3742 Conical radome pictured here.  Flat radome also available. Also available in White 

The TW3740/ TW3742 is housed in a permanent mount metal base with two nickel coated nuts and a weatherproof enclosure.  Two options for mounting are available: an L-bracket (P/N#23-0040-0) or a pipe mount (P/N#23-0065-0). 

## **Applications** 

- High Accuracy & Mission Critical Global Positioning 

- Timing applications 

- Precision Agriculture, Mining & Construction 

- Military & Security 

- Avionics 

- Law Enforcement & Public Safety 

- Fleet Management & Asset Tracking 

## **Features** 

- _Accutenna[®]_ technology 

- Great axial ratio: 1 dB typ. 

- Low noise LNA: 1 dB 

- High rejection SAW filter 

- High gain LNA: 40 dB typ. 

- Low current: 19 mA typ. 

- Wide voltage input range: 2.5 to 16 VDC 

## **Benefits** 

   - Circular polarisation throughout the full bandwidth 

   - Superior multipath signal rejection 

   - Excellent signal to noise ratio 

   - Great out of band signal rejection 

   - Increased system accuracy 

   - Ideal for harsh environments 

   - RoHS and REACH compliant 

- IP67 weather proof housing 

## Tallysman 

## TW3740 / TW3742 Multi-Constellation Antenna 

**Specifications** Vcc = 3V, over full bandwidth, T=25°C 

## **Antenna** 

Architecture 2 dB Bandwidth Antenna Gain (with 100mm ground plane) Axial Ratio (over full bandwidth) 

Dual, Quadrature Feeds 47 MHz 4.25 dBic <2 dB typ., 3 dB max. 

## **Electrical** 

Filtered LNA Frequency Bandwidth Polarization LNA Gain Gain flatness Out-of-Band Rejection <1500 MHz >1640 MHz 

VSWR (at LNA output) Noise Figure Supply Voltage Range (over coaxial cable) Supply Current ESD Circuit Protection 

1559 to 1606 MHz RHCP TW3740: 40 dB min., TW3742: 38dB min +/- 2 dB, 1559 to 1606 MHz >32 dB (TW3740) >50dB (TW3742) >35 dB >70 dB <1.5:1 typ. 1.8:1 max TW3740: 1 dB typ.  TW3742: 3dB typ. 2.5 to 16 VDC nominal (12VDC recommended max.) 19 mA typ. 15 KV air discharge 

## **Mechanicals & Environmental** 

Mechanical Size Operating Temp. Range Storage Temperature Range Enclosure Weight Attachment Method Environmental Shock Vibration Salt Spray Warranty 

66.5 mm dia. x 21 mm H -40 to +85 °C -45 to +85 °C Radome: EXL9330, Base: Zamak White Metal 150 g Permanent ¾” (19mm) through hole mount IP67,  RoHS, REACH, and RED 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 One year, parts and labour 

## **Ordering Information** 

TW3740 – Multi-Constellation Antenna TW3742 – Prefiltered Multi-Constellation Antenna 

33-3740-xx-yy-zzzz 33-3742-xx-yy-zzzz 

Where xx = connector type, yy = shape and colour of radome, and zzzz = length of cable in mm (where applicable) 

Please refer to the Ordering Guide (http://www.tallysman.com/index.php/gnss/ordering-guide/) for the current and complete list of available radomes and connectors. 

## 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 be regarded as a guarantee of performance.  Tallysman Wireless Inc. hereby disclaims any or all warranties and liabilities of any kind. © 2010 Tallysman Wireless Inc.  All rights reserved. Rev 2.9