Tallysman TW4500 Wideband Dual Feed Globalstar Antenna

TW4500 Wideband Dual Feed Globalstar Antenna

The TW4500 by Tallysman Wireless is a low cost dual feed, magnetic mount, 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 wideband dual feed patch element in the TW4500 has an excellent axial ratio across the entire Globalstar bandwidth. Unlike single feed antennas, the TW4500 provides excellent multipath rejection and a truly circular transmission response across the Globalstar band.

The TW4500 is the smallest dual feed, high performance Globalstar antenna available. It is housed in a compact IP67 magnetic mount enclosure. It available with a 50cm coaxial cable that allows for an STU modem to be mounted away from the weather, yet still provide excellent Globalstar coverage.


  • Simplex Transmit Unit (STU) Applications
  • Sea & Land Container Tracking
  • Military & Security
  • Fleet Management & Asset Tracking
  • Marine & Avionics Systems
  • Law Enforcement & Public Safety


  • Novel 25mm, wideband dual feed patch
  • 4.25 dBic Gain on 100mm Ground plane
  • Great axial ratio, <3 dB over full bandwidth
  • Weather proof, IP67 housing
  • Low Cost all-plastic housing
  • Magnetic mount
  • Wide range of connector options


  • Truly circular polarized signal transmission
  • Environment tolerant tuning
  • Truly circular with great multipath rejection
  • Industrial temperature range
  • Rugged Design
  • No compromise for cost sensitive applications
  • RoHS compliant

Ordering Information

  • 32-4500-xx-yyyy – TW4500 Dual Feed, Wideband, Globalstar Antenna

xx = connector type, (SMA male standard), yyyy = Coaxial cable length (50cm standard)