TW4422, Magnetic GPS L1 Glonass G1 Pre-filtered Antenna. Employing Tallysman‘s Accutenna® technology, TW4422 also covers QZSS L1 and SBAS (WAAS / EGNOS / MSAS).
Additionally the TW1422 is a compact, magnetic mount antenna.
TW4422, Magnetic GPS L1 Glonass G1 Pre-filtered Antenna Features:
Dual feed patch element
Axial ratio: 2.5 dB Max.
Low noise LNA: 1 dB
High rejection mid-section SAW filter
High gain: 28 dB typ.
Wide voltage input range: 2.5 to 16 VDC
IP67 weather proof housing
Low Current: 9 mA typ.
Tallysman TW1422 Benefits from:
1 dB Bandwidth
Greatly enhanced multi-path rejection
Improved GNSS reliability
Excellent signal to noise ratio
Ideal for harsh environments
Excellent out-of-band signal rejection
TW4422 has a novel 25mm dual feed wide band patch element that provides a more linear carrier phase response by virtue of the axial ratio that is greatly improved across the full frequency bandwidth.
Signals from the two 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.
TW4422 also includes an LNA pre filter, providing enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi.
Tallysman’s TW4422 is housed in a compact IP67 compliant enclosure that can be surface mounted via magnet, screws or adhesive material.
The non prefiltered version is the TW4421