What band is 1.9 GHz?

The devices that operate on 1.9GHz, 2.4GHz band frequency happen to recognized across the globe that is now being adopted as way of doing business. Prime illustrations of wireless technologies being applied in such frequency are 802.11b (Wi-fi) & Bluetooth.

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What are the 12 pitches in music?

In Western music, there are a total of twelve notes per octave, named A, A#, B, C, C#, D, D#, E, F, F#, G and G# . The sharp notes, or ‘accidentals’, fall on the black keys, while the regular or ‘natural’ notes fall on the white keys. As well as sharps, the black keys can also be flats – ie, Bb, Db, Eb, Gb, and Ab.

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