Reflectometer slide rules were handy for quickly looking up conversions between SWR, return loss, and reflection coefficient. Use this slide rule right on your computer (is this an anachronism?) in any JavaScript enabled web browser!

Pasternack's website offers a large selection of RF calculators and converters available for free for general use.

Pasternack's RF calculators and conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. Our RF and microwave calculators and converters will provide the figures you need for your radio frequency engineering needs. RF calculations and RF conversions include metric-standard, link budget, coax cable, power, attenuation, frequency and many more.