Bandline

Heard a signal you can't identify? Bandline narrows 520 known signals down to a handful — from what you can actually measure. Enter a frequency, hold your phone to the receiver, or match a waterfall shape by eye. Everything works offline, in the field, with no account and no connection. — THREE WAYS IN — BY FREQUENCY Type any frequency and see the full allocation stack: primary and secondary service, national applications, footnotes, licence class and power limits. Then see which known signals actually live in that band, ranked by how commonly they're heard. BY EAR (the interesting one) Hold your phone near the receiver's speaker, or plug in a line-in cable. Bandline records a short sample and measures: - occupied bandwidth (−26 dB) - autocorrelation peaks (ACF, in milliseconds) - tone count and tone spacing for MFSK - estimated symbol rate - burst length, duty cycle, on/off periodicity…