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-356 Braille pattern dots-356 The Braille pattern dots-356 ( ) is a 6-dot braille cell with the middle right and both bottom dots raised, or an 8-dot braille cell with the upper-middle right and both lower-middle dots raised. It is represented by the Unicode code point U+2834, and in Braille ASCII with the number 0. In unified international braille, the braille pattern dots-356 is used to represent various punctuation, often coupled with Braille pattern dots-236 as an closing mark. † Abolished in Unified English Braille Related to Braille pattern dots-356 are Braille patterns 3567, 3568, and 35678, which are used in