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TW1889 
GPS/QZSS L1/L2, GLONASS G1/G2/G3, Galileo E1/E5b, BeiDou B1/B2 | 26 dB
- Very low Noise Preamp, 2.5 dB
- Axial ratio: < 2 dB typ.
- Tight Phase Center Variation
- LNA Gain 26 dB typ.
- Low current: 12 mA typ.
- ESD circuit protection: 15 KV
- Invariant performance from: +2.5 to 16 VDC
The TW1889 employs Tallysman’s unique Accutenna® technology, covering GPS/QZSS L1/L2, GLONASS G1/G2/G3, Galileo E1/E5b, BeiDou B1/B2, as well as SBAS (WAAS/EGNOS/GAGAN/MSAS).
Ideal for dual frequency positioning where minimizing weight is important, the 37-gram TW1889 provides excellent axial ratio and tight Phase Centre Variation (PCV).
The TW1889 features 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 wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output.
The TW1889 also includes an LNA pre-filter that provides enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi.
Tallysman offers custom tuning services to optimize the performance of the TW1889 for any OEM installation environment.
| Antenna Frequency | Dual Band GNSS |
| Mount | OEM / Embedded |
| Brand | Calian |
| Description | Part-Number |
|---|---|
| TW1889 | 33-1889-xx-yyyy |