The RF Tools category covers practical online calculators, converters and technical utilities for radio frequency engineering, wireless communication and amateur radio work. Topics include wavelength calculation, frequency conversion, dB and dBm conversion, RF power calculations, coaxial cable loss, antenna length, SWR, reflected power, Fresnel zone clearance, link budget estimation, propagation-related formulas and other browser-based tools used in RF planning and troubleshooting. The articles and tools are designed for users who need quick, technically reliable calculations when working with antennas, transmitters, receivers, feed lines, wireless links, radio systems and signal measurements.
This calculator helps you estimate coaxial cable loss at your chosen frequency and length. By entering frequency, cable type, and length (in meters or feet), you can see how many decibels are lost and what percentage of transmitter power actually reaches the antenna. If you also provide transmitter power in…
Estimate the maximum distance of your radio link based on frequency, transmitter power, antenna gain, and antenna height. The calculator also considers the optical line-of-sight limit — beyond the horizon, communication is not always possible. Why radio range matters Radio communication is the backbone of countless technologies, from amateur radio…
Antenna design made simple Planning and cutting antenna wires often raises the same questions: how long should the dipole arms be?, what if I use insulated wire?, or how much do I need to trim if the resonance is off? This calculator helps you estimate the correct lengths for common…
Designing an efficient magnetic loop antenna requires precise calculations of loop dimensions, conductor diameter, and tuning capacitor values. This calculator helps you determine the key parameters for building a magnetic loop antenna for HF and VHF bands. Simply enter your desired frequency, loop diameter, and conductor size to get optimal…