| Aviation Cayo Largo Del Sur VOR-DME | 1992 who reached 35 WPM in a demonstration at a U |
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| Other uses Radio navigation aids such as and for aeronautical use broadcast identifying information in the form of Morse Code, though many stations now also provide voice identification | This left only four codepoints identical to the original Morse code, namely E, H, K and N, and the latter two had their dahs extended to full length |
| intra-character gap between the dits and dahs within a character : 0• [ ] This efficiency makes CW extremely useful for , as well as for low-power transmissions commonly called "", from the for "reduce power" | When Morse code was adapted to , the dots and dashes were sent as short and long tone pulses |
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| Although the traditional straight key is still used by some amateurs, the use of mechanical semi-automatic known as "bugs" and of fully automatic electronic is prevalent today | The narrow signal bandwidth also takes advantage of the natural aural selectivity of the human brain, further enhancing weak signal readability |
Until 2000, proficiency at the 20 WPM level was required to receive the highest level of amateur license Amateur Extra Class ; effective April 15, 2000, the FCC reduced the Extra Class requirement to 5 WPM.
5| Codes were sung by users; see the voice typewriter employing Morse or votem | For example, the Android operating system versions 5 |
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| A "poor fist" is a characteristic of sloppy or hard to copy Morse code | The original American code being compared dates to 1838; the later American code shown in the table was developed in 1844 |
Decoding software Decoding software for Morse code ranges from software-defined wide-band radio receivers, coupled to the , which decodes signals and detects CQ messages on , to smartphone applications.
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