33-3972-01-11-0000

A Tallysman Accutenna® TW3972 Triple Band GNSS Antenna + L-band Correction Services The TW3972 is an Accutenna® technology antenna providing triple band GPS L1/L2/L5, GLONASS G1/G2/G3, BeiDou B1/B2, Galileo E1/E5a+b plus L-band correction services coverage and is especially designed for precision triple frequency positioning. The TW3972 provides superior multi-path signal rejection, a linear phase response, and tight Phase Centre Variation (PCV). This antenna is ideal for precision agriculture, autonomous vehicle tracking and guidance, and other applications where precision matters. The TW3972 features a precision tuned, twin circular dual feed, stacked patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output. The antenna also has a strong pre-filter to mitigate inter-modulated signal interference from LTE and other cellular bands. TW3972 Dimensions (mm) The TW3972 offers excellent axial ratio and a tightly grouped phase center variation. The TW3972 covers from 1164MHz to 1254MHz and 1525MHz to 1606MHz. The TW3972 is housed in a through-hole mount, weather-proof enclosure for permanent installations. L Bracket or Pipe Mount (part numbers 23-0040-0, 23-0065-0 respectively) are available for non-rooftop installation. A 100mm ground plane is recommended for non-roof-top installations. This product is also available in an OEM format (TW3967 for 28dB and TW3972E for 35dB) Applications • • • Precision GPS position Triple Frequency RTK receivers Military & Security Features • • • • • • • Very low Noise Preamp, < 2.5dB Axial ratio: < 1.5 dB typ. Tight Phase Center Variation LNA Gain 37 dB typ. Low current: 24 mA typ. ESD circuit protection: 15 KV Invariant performance from: +2.5 to 16VDC Benefits • • • • • Ideal for triple band RTK surveying systems Great multipath rejection Increased system accuracy Great signal to noise ratio IP67, REACH, and RoHS compliant TW3972 Triple Band GNSS Antenna + L-band Correction Services Specifications (Measured a Vcc = 3V, and Temperature=25°C) Antenna Patch Architecture E5a/L5 Gain (100mm ground plane) B2/E5b/G3 Gain (100mm ground plane) L2 Gain (100mm ground plane) G2 Gain (100mm ground plane) E1 Gain (100mm ground plane) L1 Gain (100mm ground plane) G1 Gain (100mm ground plane) Axial Ratio @ zenith L5/E5ab