Long-wavelength band (L-band) The L-band, ranging from 1565 nm to 1625 nm, stands for the long-wavelength band (see Figure 1). It is the second primary wavelength band used for optical communication, because attenuation of optical fiber in the L-band is the second lowest after the C-band.
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New material! BandFrequency RangeOrigin of NameL0.5 to 1.5 GHzL for “long” wave.S2 to 4 GHzS for “short” wave. Don’t confuse this with the short wave radio band, which is much lower in frequencyC4 to 8 GHzC for “compromise” between S and X band.X8 to 12 GHzUsed in WW II for fire control, X for cross (as in crosshair)Frequency Letter Bands – Microwaves 101 www.microwaves101.com › encyclopedias › frequency-letter-bands
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