FMEASURE(1)

✨ NAME ✨

fmeasure — bestie, it literally calculates the properly calibrated frequency of a series of test signals. no cap. 💅

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🌸 SYNOPSIS 🌸

fmeasure [FILE]

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🦋 DESCRIPTION 🦋

okay so. fmeasure is one of a whole suite of command line tools that are designed to aid frequency measurement. iconic behavior fr fr. these tools are aimed at the people taking part in the ARRL FMT, but they're also genuinely useful for general frequency measurement and calibration. they come included within the WSJT-X package, for use with the FreqCal mode of WSJT-X. 💖

the input FILE is normally the output of the fmtavg(1) tool — after you've adjusted it to remove bad sources, obviously, we don't want that mess 🫶. the results get saved in fmeasure.out, and they're suitable for entry to the ARRL Frequency Measuring Test (FMT). main character energy honestly.

✨ detailed instructions live over at https://physics.princeton.edu/pulsar/k1jt/FMT_User.pdf — go read it, bestie, it's giving thorough.

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👑 AUTHOR 👑

Joe Taylor, K1JT. that's the one. 💜

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🎀 COPYING 🎀

fcal is Copyright © 2001 - 2019 by Joseph H. Taylor, Jr., K1JT, with contributions from additional authors. WSJT-X is Open Source software, licensed under the GNU General Public License (GPLv3). slay.

this program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY — like, none, zero, nada 😭 — without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. see the GNU General Public License for more details. periodt.

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💖 and that's the whole page, bestie 💖

this lil rewrite came from the WSJT-X Manual, page version AsciiDoc 3.0.2-devel, dated 06/22/2026. go measure some frequencies, you got this 🌈⭐🦋