Tallysman HC843 Active Dual-Band GNSS + Passive Iridium Helical Antenna
The HC843 helical antenna from Tallysman is designed for precision positioning, covering the GPS/QZSS-L1/L2, GLONASS-G1/G2, Galileo-E1, and BeiDou-B1 frequency bands, including SBAS available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)]. The HC843 is switchable between the passive Iridium and the active GNSS antenna: an input voltage lower than 5.2 VDC engages the GNSS antenna, while an input voltage of 5.5 VDC and above invokes the passive Iridium antenna. The HC843 features low current, low-noise amplifier (LNA) that includes an integrated low-loss pre-filter to prevent harmonic interference from high-amplitude signals, such as 700 MHz band LTE and other nearby in-Band cellular signals.
Features
- Low noise preamp (3.0 dB typ.)
- Axial ratio (≤ 0.5 dB at zenith)
- LNA gain (25 dB typ. | 24 dB min.)
- Low current (GNSS: 23 mA typ. | Iridium: 3.6 mA typ.)
- ESD circuit protection (15 kV)
- Invariant performance from 2.5 to 16 VDC
- GNSS-mode: 2.5 to 5.0 VDC
- Iridium-mode: 5.5 to 16 VDC
- IP67, REACH, and RoHS compliant
Benefits
- Extremely lightweight (42 g)
- Ideal for RTK and PPP surveying systems
- Great multipath rejection
- Increased system accuracy
- Excellent signal-to-noise ratio
- Industrial temperature range
- Rugged design, ideal for harsh environments
All dimensions denote millimeters