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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Frequency  ‹―›  Wavelength Calculator

Frequency

Wavelength

Relative Dielectric Constant

Wavelength

Frequency

Disclaimer: This calculator has been tested and is believed to be accurate to 6 significant figures. User assumes all risks for its use.

Here is a simple JavaScript routine that converts between frequency and wavelength in the electromagnetic field realm. Wavelength and frequency are related by the following formula:

c = λ * ν * √εr

where  c = speed of light

            λ = wavelength

            ν = frequency

            εr = relative permittivity

Frequency Units Wavelength Units
G = GHz

M = MHz

k = kHz

H = Hz

k = kilometer

m = meter

cm = centimeter

mm = mm

nmi = nautical mile

mi = statute mile

yd = yard

ft = foot

in = inch

mil = 1000ths of an inch

A table of calculated values can be found here: Frequency - Wavelength Conversion Table

Here are some familiar objects and their equivalent wavelength-related frequencies in air:

Hummer H2 (189.8 in) wavelength = 62.2 MHz - RF Cafe

Hummer H2 (189.8 in) = 62.2 MHz

Golden Gate Bridge (6,450 ft) wavelength = 153 kHz - RF Cafe

Golden Gate Bridge (6,450 ft) = 153 kHz

Earth Equatorial Diameter (7,926 mi) wavelength = 23.5 Hz - RF Cafe

Earth Equatorial Diameter (7,926 mi) = 23.5 Hz

0402 Surface Mount Capacitor (0.040 in) wavelength = 295 GHz - RF Cafe

0402 Surface Mount Capacitor (0.040 in) = 295 GHz

Ticonderoga #2 Wooden Pencil (7.5'') wavelength = 1.57 GHz -RF Cafe

Ticonderoga #2 Wooden Pencil (7.5") = 1.57 GHz

Meter Stick (1 m) wavelength = 300 MHz - RF Cafe

Meter Stick (1 m) = 300 MHz

Boeing 747-400 (231'10'') wavelength = 4.24 MHz - RF Cafe

Boeing 747-400 (231'10") = 4.24 MHz

 

Channel Tunnel, 'Chunnel' (37 km) wavelength = 8.10 kHz -RF Cafe

Channel Tunnel, "Chunnel" (37 km) = 8.10 kHz

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