TW2505 Embedded Globalstar™ Certified STU Antenna
The TW2505 by Tallysman Wireless is a professional grade, embedded, passive left hand circularly polarized antenna for the 1610 to 1620 MHz frequency band, certified and specifically designed to maximise the performance of the Globalstar™ STU (Simplex Transmit Unit) Modem.
The TW2505 features a high performance dual-feed patch element that provides great axial ratio (3 dB max) over the entire Globalstar™ frequency band, thus signals at the band edges remain truly circular, unlike the response of single feed antennas.
The TW2505 provides excellent Globalstar™ signal coverage, and comes in a compact circular form factor with a built-in 50 mm diameter ground plane and with a 15 cm RG174 cable.
Vcc = 3V, over full bandwidth, T=25°C
|Architecture||Dual, Quadrature Feeds|
|Antenna Gain (100mm ground plane)||4.25 dBic|
|Axial Ratio (over full bandwidth)||≤3 dB|
|Architecture||Hybrid 90° phase signal splitter|
|Frequency Bandwidth||1615 MHz ±10 MHz|
|Gain Flatness||≤1 dB, from 1610 to 1620 MHz|
|VSWR (at antenna)||<1.5:1|
|Return Loss (10 dB bandwidth)||<-20dB|
|ESD Circuit Protection||15 KV air discharge|
|Cross Polarization Rejection||15 dB minimum across the band|
|Mechanicals & Environmental|
|Mechanical Size||50 mm dia. x 7.8 mm H|
|Operating Temp. Range||-40 to +85 °C|
|Attachment Method||Adhesive or screw mount|
|Shock||Vertical axis: 50 G, other axes: 30 G|
|Vibration||3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G|
|Warranty||One year, parts and labour|
|Legacy Product Numbers|
|TW2505 – Globalstar™ STU antenna, 15cm cable, SMA Male||32-2505-0|
|TW2505 – Globalstar™ STU antenna, 15cm cable, MCX R/A||32-2505-5|
|TW2505 – Globalstar™ STU antenna, 15cm cable, MMCX R/A||32-2505-6|
* As a result of a growing product portfolio, Tallysman has rationalized its part number system. No changes have been made to the mechanical or electrical properties of these products. Where administratively possible, please use the following new Part Numbers.
TW2505 – Globalstar™ STU antenna 33-2505-xx-yyyy-zz Where xx = connector type, yyyy = cable length in mm and zz = (assigned by Tallysman)
Please refer to the Ordering Guide (http://www.tallysman.com/orderingguide.php) for the current and complete list of available connectors.
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.