When precision matters, trust our GNSS antennas
Choose the Tallysman line of GNSS antennas for high quality at a competitive price
About us
Calian GNSS (Formerly Tallysman Wireless): With global headquarters and manufacturing in Ottawa, Canada, Calian GNSS is a leading manufacturer of high-precision GNSS and Iridium antennas, smart antennas (antenna with built in GNSS receiver) and accessories supporting a broad range of satellite-based positioning, and navigation applications.
We are known for Accutenna®, VeraPhase®, VeroStar® and Helical antenna technologies. These technologies are among the highest performance antennas (low axial ratios, high multi-path signal rejection, tight PCV) in their size and weight, while setting economical price points. Calian’s antennas are the antennas of choice for a wide variety of applications.
Explore our GNSS technologies
See our full range of tailored GNSS products
Accutenna™
Enhancing GNSS performance with patented technology
- Integrating Calian’s patented Accutenna® technology
- Provides superior multi-path signal rejection
- Single patch covers GPS (L1), GLONASS (G1), Galileo (E1), BeiDou (B1), and L-Band Correction services
- Dual patch covers single, dual, triple and full Band GNSS
- Truly circular response over 80 MHz bandwidth
- Pre-filtering option for protection from near band signals
- Superior rejection of cross polarized signals (multi-path)
Helical™
Designed for high-performance, lightweight applications
- Ideal for unmanned aerial vehicles (UAVs), drones and robotics
- Precision-tuned quadrifilar helix antenna element
- Extreme lightweight (4 g to 42 g)
- Excellent gain and axial ratio over all elevation and azimuth angles
- Broad GNSS band coverage, including single, dual, triple, and L-band correction services
- Low-current, low-noise amplifiers (LNA) with integrated low-loss pre-filter
- High signal-to-noise ratio
- Robust, military-grade, IP67-compliant plastic enclosure
- Ideal for RTK and PPP applications
- Certified Iridium model available
VeroStar™
Designed for high-demand GNSS applications
- Supports all GNSS signals and L-band correction services
- Ideal for survey, marine, aviation, agriculture, and machine control
- Excellent low-elevation signal tracking
- High-radiating efficiency for optimal signal-to-noise ratio
- Stable phase centre variation (±2 mm)
- Superior multipath rejection
- Ideal for RTK and PPP applications
- Innovative low-noise amplifier with out-of-band filtering
- IP69K waterproof rating
VeraPhase™
Introducing the highest performing GNSS antennas
- Patented technology providing the lowest axial ratios from horizon to horizon across all GNSS frequencies
- Most stable and tightest Phase Centre Variations across all frequencies (+/- 1mm)
- Highest gain across all GNSS frequencies (1164 – 1300MHz + 1559 – 1610MHz)
VeraPhase® technology ensures unmatched stability and performance, making it ideal for RTK and PPP systems without relying on antenna calibration data (such as RINEX files). It offers superior PCV stability through all elevations and azimuths, with variations less than 1mm for elevation angles greater than 15 degrees.
Smart antenna-receivers
Ready-to-deploy high performance GNSS modules
- Integrating Calian’s Tallysman Antennas with industry leading GNSS receiver platforms
- Mitigating systemic RF integration issues
- u-blox, ST, Septentrio
- single-band, dual band, RTK, PPP-RTK capable, IMU, cm-level
- Compatible with major correction vendors
- Digital signal distribution from module (RS-422, R-S232, USB, CMOS)
- Plug-and-play software development kits with TruPrecision eval software and OS drivers for robotic platforms like ROS-2
Anti-jamming technology
Mitigating ground and near-ground based jamming signals
- Single band and triple band anti-jamming antenna technology
- Blocks jammer signals from +15 to -10 degrees elevation
- Modifies antenna radiation pattern to block low elevation jammer signals
- Increases antenna gain at high elevation angles
- Mitigates jamming signals that can saturate the low noise amplifier (LNA)
- Recommended for use with multi-constellation antennas and receivers for continuous satellite tracking
Custom GNSS antenna solutions
Antenna builder
The first step to choosing the right antenna is defining which signal frequency bands from which satellite constellations your receiver requires. Calian’s broad antenna selection supports GPS, GLONASS, Galileo, BeiDou, QZSS and NAVIC GNSS constellations, Iridium Satellite Communications, and L-Band connection services.
Talk to a Calian expert today
Reach out to us to learn how our innovative solutions can help you solve your most complex challenges.
Social responsibility at Calian
Committed to social responsibility.
ESG—more than a buzzword.
Our vision builds on our mission, values, historical commitment to social responsibility and key competencies. It provides a framework and focus for our activities and corporate communications related to ESG (Environmental Social Governance).
Download ESG report
Your service inspires us.
Proudly welcoming 100+ veterans to our team every year
Their expertise enriches our solutions, and hiring military spouses is our heartfelt way of giving back to the defence community. We’re committed to being there for you, in and out of uniform.
Explore opportunities
Relocating? We’ve got you covered.
4,000+ family members connected with family doctors
Our partnership with the Canadian Forces Morale and Welfare Services ensures that military family members are connected with family doctors, hassle-free.
Learn more
Building a resilient community together.
$650,000+ in corporate giving
We are woven into our community’s fabric, our support extending to renowned organizations and causes. We’re not just about business; we are about building a supportive and resilient community together.
Learn more
Engaging in research that matters.
Our contributions to significant research projects and our focus on environmental safety are unwavering. We’re front-runners in compliance with environmental laws and continually innovate to lessen our ecological footprint.
Learn more
Committed to exceeding expectations.
30+ Indigenous community engagements
With a published Indigenous engagement policy, Calian sets out the framework and guidelines for all Calian business activities while being wholly committed to meeting—even exceeding—the five per cent Indigenous participation requirement on all Federal contracts.
Learn more
Global innovation for connected, safe and healthy lives
Explore our four business units below.
