Tallysman TW3865/TW3867

Tallysman TW3865/TW3867 Embedded GPS L1/L2 + GLONASS G1/G2 + BeiDou B1 + Galileo E1 Antenna

The TW3865/TW3867 employ Tallysman's unique Accutenna technology covering the GPS L1/L2, GLONASS G1/G2, Galileo E1, BeiDou B1 and SBAS (WAAS, EGNOS & MSAS) frequency bands.



The TW3865 and TW3867 employ Tallysman’s unique Accutenna technology providing dual band GPS L1 & L2, GLONASS G1 & G2, BeiDou B1, and Galileo E1 coverage and is especially designed for precision dual frequency positioning.

The antennas feature a precision tuned, circular dual feed, stacked patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wideband LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output.

The TW3867 has a strong pre-filter to mitigate intermodulated signal interference from LTE and other cellular bands.

Both antennas offer excellent axial ratio and a tightly grouped phase center.

The OEM antennas are supplied with a standard 60mm diameter circular ground plane, with a coaxial cable terminated with your choice of connector (right angle MCX is shown in the drawing). Mounting holes are provided for attachment to larger ground planes. Custom tuning and ground plane options may be available, depending on purchase level commitment.


  • Precision GPS position
  • Dual Frequency RTK receivers
  • Military & Security
  • Network Timing and Synchronization


  • Very low Noise Preamp
  • Axial ratio: < 2dB typ.; <1 dB at Zenith
  • Tight Phase Center Variation
  • LNA Gain 28 dB typ.
  • Low current: 24 mA typ.
  • ESD circuit protection: 15 KV
  • Invariant performance from: +2.5 to 12VDC


  • Ideal for dual frequency RTK and PPP surveying systems
  • Great multipath rejection
  • Increased system accuracy
  • Great signal to noise ratio
  • RoHS and REACH compliant

Ordering Information

TW3865 – GPS L1/L2 + GLONASS G1/G2 + BeiDou B1 + Galileo E1 antenna33-3865-xx-yyyy-zz
TW3867 – GPS L1/L2 + GLONASS G1/G2 + BeiDou B1 + Galileo E1 antenna33-3867-xx-yyyy-zz

Where xx = connector type, yyyy = cable length in mm and zz = assigned by Tallysman for custom tuning