GNSS Engineering Resources
Free interactive tools for GNSS engineers
Reference visualizers and calculators built by GNSource's antenna design team. Use them to plan multi-frequency receiver front-ends, audit constellation coverage, and verify integration choices before issuing a quote request.
LoRaWAN Frequency by Country
Look up a source-attributed LoRaWAN regional-plan candidate for a listed deployment country, with cautious checks before configuration.
Check a regional planIoT Antenna Compatibility Checker
Capture your LoRaWAN, cellular, Wi-Fi or ISM antenna requirements and generate a practical RF integration brief for engineering review.
Create a requirements briefGNSS Frequency Band Visualizer
Interactive spectrum chart of every GPS, Galileo, GLONASS, BeiDou, QZSS, NavIC, and SBAS signal in the GNSS L-band, with click-to-compare shared frequencies.
Open the visualizerCoordinate Converter
Convert WGS84 coordinates between decimal degrees, DMS, decimal minutes, UTM, MGRS, and ECEF XYZ — all six formats update live as you edit any one of them.
Open the converterAntenna Selector
Pick from four short questions and get our 68-SKU catalog ranked for your specific application — survey, aviation, anti-jamming, BDS RDSS, vehicle, or timing.
Open the selectorBaseline Distance Calculator
Compute ellipsoidal geodesic distance, initial / final bearing, and 3D baseline vector between any two WGS84 points using Vincenty's inverse formula. For RTK survey planning, CORS layout, and direction-finding antenna spacing.
Open the calculatorRF Link Budget Calculator
Compute C/N₀ at the receiver from antenna gain, LNA stages, cable loss, and receiver noise figure. Friis cascade math + 10 common coax types + live max-cable-length back-solve.
Open the calculatorGPS Time Converter
Convert between UTC, GPS week + TOW, GPS seconds since epoch, and Unix time — all 18 leap seconds accounted for. Shows 10-bit week + rollover count and RINEX filename helpers.
Open the converter