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Tag Archives :DTMF

Ailunce HD1 Dual-Tone Multi-Frequency Signaling (DTMF)

Press PTT and then dial your DTMF number. 0~9 -> DTMF dial number 0~9. Menu -> A Up -> B Down -> C Exit -> D * -> E # -> F  ...

Read more  HD1,  DTMF

The application of DTMF in walkie-talkie

DTMF is the abbreviation of Dual Tone Multi-Frequency, that is, dual-tone multi-frequency. It refers to the sound or tone that the phone makes when pressing a number, where each key has two tones of a specific frequency, which are then transmitted over the voice channel.  ...

Read more  DTMF,  Amateur Radio