Tallysman TW4821 Wideband Dual Feed Antenna

TW4821 Wideband Dual Feed Antenna

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The TW4821 has reached End of Life (EOL). Tallysman has replaced the TW4821 with the TW4721.



As a dual feed antenna, the TW4821 antenna from Tallysman Wireless is capable of tracking GPS L1, SBAS, BeiDou B1 and Galileo L1 signals. It covers all SBAS frequency bands ranging from 1557 to 1593 MHz. The TW4821 antenna provides outstanding multipath rejection. Moreover, with the help of its improved axial ratio, the TW4821 provides a great linear carrier phase response. It also eliminates out of band signal effectively.

The TW4821 is the most compact dual feed antenna that offers top-notch performance. It is enclosed in an IP67 magnetic mount enclosure that provides a wide range of connector options.

The flexibility of the TW4821 antenna enables it to be used in a wide range of applications, some of which include military, managing fleet, surveillance for covert operations and others.


  • Dual feed
  • Very low noise and high gain
  • Low power consumption
  • High rejection
  • Wide bandwidth (up to 40% wider)
  • Offer reliable and accurate positioning
  • Signal to noise ratio is superb
  • Weather proof IP67 enclosure that is well suited for harsh environments

Technical Specifications

Signals:BeiDou B1, GPS L1, Galileo E1, SBAS (EGNOS, QZSS, MSAS, WAAS)
Dimension (D x H):38 mm x 14.3 mm
Weight:50 g
Frequency Bandwidth:1557 to 1593 MHz
Operating Temperature:-40 °C to +85 °C
Attachment Method:Magnetic


The compact TW4821 dual-feed antenna is available through Canal Geomatics. If you would like to learn more about this antenna, please feel free to contact us using the Request Pricing form.