OPENLTE
Run the RF numbers before you climb the tower — free calculators for free-space path loss, link budgets, antenna gain, dBm and watts, wavelength, and channel capacity, plus plain-English guides to radio propagation, antennas, and wireless networks.
From working out the path loss on a line-of-sight shot and balancing a full link budget to converting antenna gain, dBm and watts, and wavelength, and reading the Shannon ceiling on a channel, OpenLTE pairs free hands-on RF calculators with plain-English guides and an illustrated museum of radio. Run the numbers before you climb the tower.
RF & Wireless Calculators
Free tools for the numbers behind a radio link — free-space path loss, link budgets, antenna gain, dBm and watts, wavelength and element lengths, and Shannon channel capacity.
Free-Space Path Loss Calculator
Get the ideal line-of-sight loss in dB from a link's distance and frequency — the Friis baseline behind every link budget
RF Link Budget Calculator
Add transmit power and antenna gains, subtract path, cable, and fade losses, and read the received power, margin, and whether the link closes
Antenna Gain Converter
Convert antenna gain between dBi, dBd, and a linear ratio, and estimate the beamwidth of a symmetric beam — so two antennas compare fairly
dBm to Watt Converter
Convert RF power between dBm, milliwatts, and watts either way, with the log relationship that makes 0 dBm = 1 mW and 30 dBm = 1 W
Frequency & Wavelength Calculator
Turn a frequency into its wavelength and get half-wave and quarter-wave element lengths, with a velocity factor so a cut element resonates
Shannon Channel Capacity Calculator
Get the theoretical maximum error-free data rate from a channel's bandwidth and SNR, plus the spectral efficiency in bits/s/Hz
Wireless & Radio Museum
Step into an illustrated museum of radio and wireless — the pioneers who uncovered the electromagnetic spectrum, the antennas and transmission lines that shape a signal, the vacuum tubes and transmitters that first put a voice on the air, and the networks that connect the modern world, each in its own gallery. Get to know the history and the people behind the work you do every day.
Tour the museum →From the RF Journal
Fresh guides on radio propagation and path loss, antennas and feedlines, link planning and signal power, and wireless networks, plus plain-language explainers on the numbers the tools produce.
The Ultimate Handbook for Mastering LTE Testing Tools: A Deep Dive for OpenLTE Enthusiasts
Revolutionizing Connectivity: How Edge Computing is Transforming LTE Networks
The Evolution and Future of Wireless Communications: From 1G to OpenLTE and Beyond
The Evolution and Impact of 4G LTE Solutions in Modern Connectivity
The Evolution and Impact of LTE Data Services on Modern Connectivity
The Architecture and Optimization of Modern LTE Antenna Systems
Keep Learning
Plain-language explainers on RF fundamentals, antennas and propagation, radio history, and wireless networks — everything you need to read the numbers behind a link with confidence.
Visit the Learn hub →