SBG - Ellipse D GNSS Triple-Band Antenna with L-Band - TW3972

The Tallysman TW3972 antenna supports a wide range of GNSS constellations and correction services. It covers:

GPS: L1, L2, L5
GLONASS: G1, G2, G3
BeiDou: B1, B2, B2a
Galileo: E1, E5a+b
NavIC: L5
As well as L-band and SBAS correction services (WAAS, EGNOS, MSAS, GAGAN).
It is specifically designed for triple-frequency precision positioning.

The TW3972 antenna is designed for permanent installation via a ¾” (19mm) through-mount. For installations not on a roof, a 100mm ground plane is recommended.

Optional mounts, such as an L-bracket (reference 23-0040-0) or a pipe mount (reference 23-0065-0), are also available for alternative mounting options.

Yes, the TW3972 antenna is housed in a watertight and rugged enclosure compliant with strict environmental standards. It holds an IP67 certification, making it resistant to water and dust. It is designed to operate across a wide temperature range, from -40°C to +85°C.

Additionally, it complies with RoHS, RED, and REACH standards and has passed salt fog resistance tests (MIL-STD-810F Section 509.4), shock tests (50 G vertical axis, 30 G other axes), and vibration tests (3 axes, 3 G).

The TW3972 antenna operates on a supply voltage range of +2.5 to 16 VDC (nominal, up to 50mV peak-to-peak ripple). Current consumption is typically 24 mA at 25°C. It also features electrostatic discharge (ESD) protection of 15 kV (air discharge).

Yes, the TW3972 antenna is specifically designed for precision positioning applications. It is ideal for triple-frequency RTK (Real-Time Kinematic) receivers as well as PPP (Precise Point Positioning) systems, providing high accuracy for demanding applications such as precision agriculture or autonomous vehicle guidance.

The TW3972 antenna is equipped with an integrated robust pre-filter. This filter is designed to attenuate interference from intermodulated signals originating from LTE bands and other cellular bands, including Ligado, thereby ensuring better GNSS signal integrity.

The TW3972 antenna has mechanical dimensions of 66 mm x 21 mm. Its weight is 185 grams. It is recommended to use a ground plane of 100 mm for installations not mounted on a roof.

Tallysman's Accutenna® technology, integrated into the TW3972 antenna, offers several key advantages for high-precision positioning:

Superior rejection of multi-path signals, reducing errors caused by signal reflections.Linear phase response.Very low phase center variation (PCV), contributing to improved system accuracy.Low axial ratio (typically below 1.5 dB), ensuring excellent reception of circularly polarized signals.

Yes, a 100 mm ground plane is recommended for TW3972 antenna installations that are not mounted on a roof (non-rooftop installations).

The TW3972 antenna is equipped with an LNA (low-noise amplifier) with a typical gain of 37 dB. Its preamplifier has very low noise, generally below 2.5 dB.

Yes, the TW3972 antenna is designed to withstand shocks and vibrations. It complies with MIL-STD-810D for vibration and shock resistance, with 50 G resistance on the vertical axis and 30 G on the other axes for shocks, and 3 G resistance for vibrations on 3 axes with a sweep from 10 to 200 Hz.

The TW3972 antenna is particularly suited to demanding applications requiring high positioning accuracy. This includes in particular:

Precision agricultureVehicle tracking and autonomous guidanceMilitary and security applicationsTriple-frequency RTK surveying systems

Yes, mounting accessories are available for installations not on a roof. These include an L-bracket (part number 23-0040-0) or a pipe mount (part number 23-0065-0).

Yes, the TW3972 antenna is compliant with several environmental standards. It is RoHS, RED, and REACH certified. Additionally, its housing is waterproof and compliant with IP67 and IP69K standards.

Yes, the TW3972 antenna is also available in OEM (Original Equipment Manufacturer) formats for specific integrations. These versions include:

TW3967: An OEM format with a 28 dB gain. TW3972E: Another OEM format with a 35 dB gain. These models are designed to be integrated into other systems or products.