Morse code required for the privilege to use the HF bands. 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 five wpm. Finally, effective on February 23, 2007, the FCC eliminated the Morse code proficiency requirements from all amateur radio licenses. While voice and data transmissions are limited to specific amateur radio bands under U.S. rules, Morse code is permitted on all amateur bands—LF, MF, HF, VHF, and UHF. In some countries, certain portions of the amateur radio
Braille pattern dots-235 Braille pattern dots-235 The Braille pattern dots-235 ( ) is a 6-dot braille cell with dots raised, or an 8-dot braille cell with raised. It is represented by the Unicode code point U+2816, and in Braille ASCII with the number 6. In unified international braille, the braille pattern dots-235 is used to represent an exclamation point, other punctuation, and otherwise assigned as needed. † Abolished in Unified English Braille Related to Braille pattern dots-235 are Braille patterns 2357, 2358, and 23578, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille. In the Japanese kantenji braille, the