Tone
The T stands for "Tone". Tone is used only used in Morse code and digital transmissions and is therefore omitted during voice operations. With modern transmitter technology, imperfections in the quality of the transmitter modulation that can be detected by humans are rare. Tone is measured on a scale of 1 to 9.
- Sixty cycle a.c or less, very rough and broad
- Very rough a.c., very harsh and broad
- Rough a.c. tone, rectified but not filtered
- Rough note, some trace of filtering
- Filtered rectified a.c. but strongly ripple-modulated
- Filtered tone, definite trace of ripple modulation
- Near pure tone, trace of ripple modulation
- Near perfect tone, slight trace of modulation
- Perfect tone, no trace of ripple or modulation of any kind
Read more about this topic: RST Code
Famous quotes containing the word tone:
“Self-confidence is apt to address itself to an imaginary dullness in others; as people who are well off speak in a cajoling tone to the poor.”
—George Eliot [Mary Ann (or Marian)
“Genius resembles a bell; in order to ring it must be suspended into pure air, and when a foreign body touches it, its joyful tone is silenced.”
—Franz Grillparzer (1791–1872)
“He doesn’t know a damn thing about China ... That’s what makes him an expert. He knows nothing about music, being tone deaf. That’s what makes him a musician ... And he’s batty in the head. That’s what makes him a philosopher.”
—William Carlos Williams (1883–1963)