The Tallysman TW1500 employs their unique Accutenna technology in a low cost dual feed, passive Left Hand Circularly Polarised antenna (LHCP) for the 1610 to 1620 MHz frequency band, specifically designed to maximise the performance of the Globalstar™ STU (Simplex Transmit Unit) modems.
The TW2500 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 TW2500 is housed in a compact, industrial- grade weather-proof, magnet mount enclosure, with threaded base holes for screw down attach. It is available with a 50 cm cable, allowing for the STU modem to be mounted out of the elements and reach, and still providing excellent Globalstar™ signal coverage.
Applications
- Higher success rates for Globalstar™ STU transmissions
- Sea & Land Container Tracking
- Military & Security
- Fleet Management & Asset Tracking
- Marine & Avionics Systems
- Law Enforcement & Public Safety
TW2500 Magnet Mount Antenna
Antenna
Architecture: Dual, quadrature feeds
Antenna Gain (100mm ground plane): 4.25dBicAxial Ratio (over full bandwidth): ≤3dB
1.0 dB Bandwidth: 1600MHz to 1630MHz
ElectricalArchitecture: Dual Feed Patch -> Hybrid 90° Combiner
Polarization: LHCP
VSWR (at antenna): <1.5:1
Return Loss (-10 dB bandwidth): <-20MHz
ESD Circuit protection: 15KV air discharge
Mechanicals & Environmental
Mechanical Size: 35mm dia. x 7.25mm
Cable: 1.38mm OD, 15cm. Custom lengths optional
Operating Temp. Range: -40°C to +85°C
Weight: 30g
Attachment Method: Adhesive or M2 screw mount
Environmental: RoHS compliant
Shock: Vertical axis: 50G, other axes: 30G
Vibration: 3 axis, sweep = 15 min, 10 to 200Hz sweep: 3G