A Tallysman Accutenna TW2605 Embedded Iridium Certified Antenna The TW2605 employs Tallysmans unique Accutenna technology in an embedded, passive right hand circularly polarised antenna for the 1616 to 1626.5 MHz frequency band, certified and specially designed to maximise the performance of Iridium voice and data modems. The TW2605 features a high performance dual-feed patch element that provides great axial ratio (3dB max) over the entire Iridium frequency band, thus signals at the band edges remain truly circular, unlike the response of single feed antennas. TW2605 Dimensions (mm) The TW2605 provides excellent Iridium signal coverage, and comes in a compact circular form factor with a built-in 50 mm diameter ground plane. Standard coax cable is 15cm of RG174. Custom tuning, cable length, and connectors are available on request. Applications Iridium Voice and Data Applications Sea & Land Container Tracking Military & Security Fleet Management & Asset Tracking Marine & Avionics Systems Law Enforcement & Public Safety Features Benefits Custom high gain 4.25 dBic dual-feed patch Excellent circular polarized signal transmission Great axial ratio, 3 dB over full bandwidth Industrial temperature range 15 KV ESD circuit protection Rugged Design Robust design RoHS compliant Small form factor Available application specific tuning TW2605 Embedded Iridium Certified Antenna Specifications Vcc = Over full bandwidth, T=25C Antenna Architecture Dual, quadrature feeds Antenna Gain (100mm ground plane) 4.25 dBic Axial Ratio (over full bandwidth) 3 dB Radiated Bandwidth (-0.5 dB) 1605 MHz to 1635 MHz Electrical Architecture Hybrid 90 phase signal splitter F requency Bandwidth 1616 to 1626.5 MHz Polarization RHCP Cross Polarization Rejection typically 20dB Gain flatness 0.5 dB, from 1616 to 1626.5 MHz VSWR (at antenna) <1.5:1 R eturn Loss Bandwidth (10 dB return loss) >20 MHz ESD Circuit protection 15 KV air discharge Mechanicals & Environmental Mechanical Size 50 mm dia. x 7.8 mm H Cable RG174 / 15 cm, custom lengths optional Operating Temp. Range -40 to +85 C Weight 100 g Attachment Method Adhesive or Screw Mount Environmental RoHS compliant Shock Vertical axis: 50 G, other axes: 30 G Vibration 3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G Ordering Information Legacy Part Number: TW2605 Iridium antenna: 32-2605-xx-yyyy-zz Where xx = connector type, yyyy = cable length in mm and zz = custom tuning number (assigned by Tallysman) * 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 Part Numbers. TW2605 Iridium antenna, 33-2605-xx-yyyy-zz Please refer to the Ordering Guide (