Tallysman GNSS antenna for Reach M+
Tallysman GNSS antenna for Reach M+
Tallysman GNSS antenna for Reach M+
The Tallysman GNSS antenna for Reach M+ is a precision multi-band satellite positioning antenna engineered for high-accuracy real-time kinematic (RTK) and post-processing applications. Surveyors, drone operators, and geospatial professionals rely on this antenna to achieve centimeter-level positioning accuracy across GPS, GLONASS, Galileo, and BeiDou constellations. This antenna solves the critical challenge of achieving reliable satellite signal reception in challenging environments while maintaining compact form factor compatibility with the Reach M+ receiver.
Product Overview
The Tallysman GNSS antenna is a specialized multi-constellation receiver designed to work seamlessly with Emlid Reach M+ RTK receivers. It operates on the principle of phased array signal reception, capturing signals from multiple satellite systems simultaneously to enable rapid convergence and robust positioning solutions. The antenna features a low-noise amplifier (LNA) integrated into its housing, which amplifies weak satellite signals before transmission to the receiver unit. This design minimizes signal degradation over cable runs and ensures optimal signal-to-noise ratio even in urban canyon environments with partial sky visibility. The compact helical design provides excellent gain characteristics across all supported GNSS bands while maintaining a lightweight profile suitable for aerial and mobile platforms.
What distinguishes this antenna from standard GNSS receivers is its specialized tuning for the Reach M+ platform and its exceptional performance in multipath-rich environments. The antenna incorporates advanced filtering to reject ground reflections and interference from nearby RF sources, critical for achieving reliable RTK corrections in construction sites, urban areas, and near metallic structures. The integrated cable assembly connects directly to the Reach M+ via a standard SMA connector, eliminating compatibility issues and ensuring proper impedance matching. Its weather-sealed construction withstands extended field deployment across varying climatic conditions, making it suitable for long-term monitoring applications and mobile surveying operations.
Key Specifications
| Specification | Details |
| Product Type | Multi-constellation GNSS Antenna with Integrated LNA |
| Brand | Tallysman |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Compatible Receiver | Emlid Reach M+ RTK Receiver |
| GNSS Constellations Supported | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Frequency Bands | L1/L2/L5 multi-band reception |
| Connector Type | SMA Male with integrated cable |
| Gain | Optimized for RTK applications across all bands |
| Operating Temperature | -40°C to +85°C |
| IP Rating | IP67 weather-sealed housing |
Key Features
- Multi-constellation reception across GPS L1/L2/L5, GLONASS, Galileo, BeiDou, and QZSS for maximum satellite availability and faster RTK convergence
- Integrated low-noise amplifier (LNA) with optimized gain characteristics to enhance weak signal reception in challenging environments and reduce cable loss
- Precision helical antenna design with superior multipath rejection to eliminate ground reflections and RF interference common in urban and industrial settings
- Direct SMA connector compatibility with Reach M+ receiver ensuring proper impedance matching and eliminating adapter-related signal degradation
- IP67 weather-sealed construction rated for extended field deployment in rain, dust, and extreme temperature conditions from -40°C to +85°C
- Compact lightweight form factor suitable for mounting on UAVs, rovers, and mobile survey platforms without compromising positioning accuracy
Applications and Use Cases
- Precision surveying and mapping with centimeter-level accuracy for cadastral surveys, construction staking, and topographic mapping using RTK corrections
- Unmanned aerial vehicle (UAV) positioning for photogrammetry, orthomosaic generation, and aerial surveys requiring accurate geolocation of captured imagery
- Agricultural precision farming applications including field boundary mapping, variable rate application guidance, and crop monitoring with sub-decimeter positioning
- Infrastructure monitoring and deformation analysis for dams, bridges, and buildings where continuous high-accuracy positioning data is required for structural health assessment
- Mobile robot navigation and autonomous vehicle localization in GPS-denied environments with RTK corrections for reliable autonomous operation
- Geospatial research and environmental monitoring for glacier tracking, coastal erosion studies, and geological surveys requiring long-term multi-constellation positioning
How to Use
Begin by mounting the Tallysman GNSS antenna on a stable platform with clear sky visibility, ensuring the antenna's top surface faces upward with minimal obstruction from nearby structures, trees, or metallic objects that could cause multipath reflections. Connect the integrated SMA connector directly to the SMA port on your Emlid Reach M+ receiver, ensuring the connection is hand-tight and secure. For optimal performance, mount the antenna at least 30 centimeters away from other RF sources, power cables, and metallic surfaces that could degrade signal quality. Power on your Reach M+ receiver and configure it to receive RTK corrections from your chosen service provider (such as NTRIP caster or local base station). Allow the receiver 5-10 minutes for initial satellite acquisition and RTK convergence, during which the antenna will lock onto satellites from multiple constellations simultaneously.
For mobile applications such as UAV mounting, ensure the antenna is securely fastened to prevent vibration-induced connector loosening during flight operations. The integrated cable should be routed away from high-current power lines and motor controllers to minimize electromagnetic interference. In challenging urban environments with limited sky visibility, the antenna's multipath rejection circuitry will automatically filter spurious signals, though positioning accuracy may degrade slightly compared to open-sky conditions. Periodically inspect the antenna housing and connector for water ingress or corrosion, particularly after extended field deployment in wet conditions. The IP67 rating ensures water resistance, but avoid submerging the antenna or exposing the connector to standing water for extended periods.
Frequently Asked Questions
What is the difference between L1, L2, and L5 frequency bands in GNSS reception?
L1 (1575.42 MHz) is the primary civilian GPS frequency and is supported by all satellite systems. L2 (1227.60 MHz) provides additional signal diversity and enables dual-frequency ionospheric error correction, significantly improving accuracy in challenging environments. L5 (1176.45 MHz) is a newer frequency with superior signal strength and better multipath rejection characteristics. The Tallysman antenna receives all three bands simultaneously, enabling rapid RTK convergence and superior accuracy by leveraging redundant satellite signals across multiple frequencies.
How does RTK (Real-Time Kinematic) positioning work with this antenna?
RTK positioning requires the Reach M+ receiver to receive real-time correction data from a reference base station operating at a known location. The Tallysman antenna captures raw satellite signals, which the receiver processes along with correction data to calculate your precise position with centimeter-level accuracy. The multi-constellation support of this antenna ensures sufficient satellite visibility for rapid convergence to fixed integer ambiguity solutions, typically achieved within 30 seconds to 2 minutes depending on environmental conditions. Without RTK corrections, standalone positioning accuracy is typically 2-5 meters; with RTK, accuracy improves to 2-3 centimeters horizontally and 3-5 centimeters vertically.
Can this antenna be used in areas with poor satellite visibility such as forests or urban canyons?
While the Tallysman antenna's multipath rejection and integrated LNA provide superior performance compared to standard antennas, positioning accuracy will degrade in areas with severely limited sky visibility. Forests with dense canopy cover and deep urban canyons surrounded by tall buildings will reduce the number of visible satellites and increase multipath errors. In such environments, positioning convergence time may increase from seconds to minutes, and accuracy may degrade to decimeter-level rather than centimeter-level. For optimal performance, ensure at least 30-40 degrees of unobstructed sky visibility above the antenna horizon. Using a mobile platform that moves through the area can improve satellite geometry and convergence speed.
What is multipath rejection and why is it important?
Multipath occurs when satellite signals reflect off nearby surfaces (buildings, water, metal structures) before reaching the antenna, creating delayed copies of the direct signal. These reflected signals degrade positioning accuracy by introducing errors in distance calculations. The Tallysman antenna incorporates specialized filtering and helical design that preferentially receives direct signals while rejecting reflected signals. This multipath rejection capability is critical for maintaining centimeter-level accuracy in urban and industrial environments where reflective surfaces are abundant. Without effective multipath rejection, positioning errors can exceed 10-20 centimeters in such environments.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
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