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Copyright: 1996 - 2024


    Kirt Blattenberger,


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...

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Frequency-to-Meter Conversion Chart for Hams & SWL's
June 1966 Popular Electronics

June 1966 Popular Electronics

June 1966 Popular Electronics Cover - RF CafeTable of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Popular Electronics, published October 1954 - April 1985. All copyrights are hereby acknowledged.

As with your school and college days where once there was no longer any reason to memorize physical constants, conversion formulas, and names of people, places, and things, much of the noggin's gray matter was repurposed to remember topics of more immediate need. You can always look up what you have forgotten. While studying for your Ham radio or FCC license, being able to be able to quickly convert between wavelength and frequency is essential. Recalling on demand frequency-wavelength pairs is a real time saver on a timed exam. Even being able to perform the conversion on a calculator during the test takes up valuable time that could be better used on other tasks. This handy-dandy chart for converting frequency in MHz to wavelength in meters appeared in a 1966 issue of Popular Electronics magazine. If you are designing an antenna, then you will still want a calculator; otherwise, if accuracy to a couple significant places will do, the chart is as useful today as it was back then for at an-a-glance conversion.

Frequency-to-Meter Conversion Chart for Hams & SWL's

Frequency-to-Meter Conversion Chart for Hams & SWL's, June 1966 Popular Electronics - RF CafeBy James G. Lee, W6VAT

When you're planning to install antennas for various frequencies, it's useful to have a rough idea of the equivalent wavelengths. You could use the formula: wavelength (meters) equals 300 divided by frequency (megahertz), but this quick-look chart will give you almost as precise an answer. The formula is only necessary when you want to cut an antenna to the nearest fraction of a meter. Calibrated to cover the 3.0- to 300-MHz range, this chart makes it possible to convert from frequency to meters or vice versa. Read up and across for meters, across and down for MHz.



Posted July 30, 2018

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