Skip to contentSkip to Braille Studio

Library / Engineering & Technology / Wireless Telegraphy and Telephony Simply Explained / Braille

Wireless Telegraphy and Telephony Simply Explained ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

237,012 braille cells · 251 embossed pages at 40×25 · 686 unrepresentable characters omitted

⠀⠞⠺⠕⠀⠏⠥⠍⠏⠎⠀⠠⠁⠀⠯⠀⠠⠃⠲⠀⠠⠑⠁⠡⠀⠏⠥⠍⠏⠀⠊⠎⠀⠊⠍⠍⠻⠎⠫⠀
⠔⠀⠁⠀⠏⠕⠕⠇⠀⠷⠀⠀⠺⠁⠞⠻⠀⠯⠀⠉⠕⠝⠎⠊⠌⠎⠀⠷⠀⠁⠀
⠉⠽⠇⠔⠙⠗⠊⠉⠁⠇⠀⠞⠥⠃⠑⠀⠠⠞⠀⠯⠀⠠⠞⠄⠀⠓⠁⠧⠬⠀⠁⠀⠎⠍⠁⠇⠇⠀⠀
⠕⠏⠢⠬⠂⠀⠠⠕⠀⠯⠀⠠⠕⠄⠂⠀⠁⠞⠀⠮⠀⠇⠪⠻⠀⠑⠝⠙⠀⠞⠕⠀⠁⠙⠍⠊⠞⠀⠮⠀
⠺⠁⠞⠻⠀⠯⠀⠁⠀⠏⠊⠌⠕⠝⠂⠀⠠⠏⠀⠀⠯⠀⠠⠏⠄⠂⠀⠕⠏⠻⠁⠞⠬⠀⠥⠏⠀⠯⠀
⠙⠪⠝⠀⠊⠝⠎⠊⠙⠑⠀⠮⠀⠞⠥⠃⠑⠲⠀⠠⠑⠀⠐⠞⠀⠞⠀⠮⠀⠀⠏⠊⠌⠕⠝⠀⠠⠏⠀
⠊⠎⠀⠗⠁⠊⠎⠫⠀⠔⠀⠮⠀⠏⠥⠍⠏⠀⠠⠁⠀⠭⠀⠺⠀⠙⠗⠁⠺⠀⠔⠀⠺⠁⠞⠻⠀
⠹⠗⠳⠛⠓⠀⠮⠀⠎⠍⠁⠇⠇⠀⠀⠓⠕⠇⠑⠀⠠⠕⠲⠀⠠⠵⠀⠎⠕⠕⠝⠀⠵⠀⠭⠀
⠙⠑⠎⠉⠢⠙⠎⠂⠀⠓⠪⠑⠧⠻⠂⠀⠮⠀⠺⠁⠞⠻⠀⠺⠀⠗⠑⠧⠻⠎⠑⠀⠊⠞⠎⠀⠀
⠙⠊⠗⠑⠉⠞⠊⠕⠝⠀⠯⠀⠏⠁⠎⠎⠀⠕⠥⠞⠲⠀⠠⠮⠀⠁⠉⠞⠊⠕⠝⠀⠷⠀⠮⠀⠺⠁⠞⠻
⠀⠗⠑⠏⠗⠑⠎⠢⠞⠎⠀⠞⠀⠷⠀⠁⠝⠀⠀⠁⠇⠞⠻⠝⠁⠞⠬⠀⠉⠥⠗⠗⠢⠞⠀
⠃⠑⠉⠁⠥⠎⠑⠀⠭⠀⠏⠁⠎⠎⠑⠎⠀⠔⠀⠋⠊⠗⠌⠀⠐⠕⠀⠙⠊⠗⠑⠉⠞⠊⠕⠝⠀⠯⠀
⠮⠝⠀⠔⠀⠀⠮⠀⠕⠮⠗⠲⠀⠠⠮⠀⠏⠥⠍⠏⠀⠠⠃⠀⠊⠎⠀⠋⠊⠞⠞⠫⠀⠾⠀⠁⠀
⠧⠁⠇⠧⠑⠀⠘⠱⠀⠁⠉⠞⠊⠕⠝⠀⠊⠎⠀⠞⠕⠀⠏⠻⠍⠊⠞⠀⠀⠮⠀⠺⠁⠞⠻⠀⠞⠕⠀
⠋⠇⠪⠀⠔⠀⠐⠕⠀⠙⠊⠗⠑⠉⠞⠊⠕⠝⠀⠕⠝⠇⠽⠲⠀⠠⠮⠀⠧⠁⠇⠧⠑⠀⠊⠎⠀
⠋⠊⠞⠞⠫⠀⠞⠕⠀⠮⠀⠀⠏⠊⠌⠕⠝⠀⠠⠏⠄⠲⠀⠠⠭⠀⠊⠎⠀⠁⠀⠇⠊⠞⠞⠇⠑⠀
⠋⠇⠁⠏⠀⠱⠊⠡⠀⠕⠏⠢⠎⠀⠁⠀⠓⠕⠇⠑⠀⠔⠀⠮⠀⠏⠊⠌⠕⠝⠀⠱⠢⠀⠮⠀⠀
⠇⠁⠞⠞⠻⠀⠊⠎⠀⠙⠑⠎⠉⠢⠙⠬⠀⠯⠀⠉⠇⠕⠎⠑⠎⠀⠱⠢⠀⠭⠀⠊⠎⠀⠗⠊⠎⠬⠲⠀
⠠⠎⠥⠏⠏⠕⠎⠑⠀⠞⠀⠮⠀⠀⠏⠊⠌⠕⠝⠀⠊⠎⠀⠗⠁⠊⠎⠫⠲⠀⠠⠺⠁⠞⠻⠀⠺⠀⠃⠑
⠀⠙⠗⠁⠺⠝⠀⠔⠀⠹⠗⠳⠛⠓⠀⠮⠀⠇⠊⠞⠞⠇⠑⠀⠓⠕⠇⠑⠀⠠⠕⠄⠲⠀⠠⠵⠀⠀
⠎⠕⠕⠝⠀⠵⠀⠮⠀⠏⠊⠌⠕⠝⠀⠗⠑⠁⠡⠑⠎⠀⠮⠀⠇⠊⠍⠊⠞⠀⠷⠀⠮⠀⠌⠗⠕⠅⠑⠀
⠭⠀⠉⠕⠍⠍⠢⠉⠑⠎⠀⠞⠕⠀⠀⠙⠑⠎⠉⠢⠙⠲⠀⠠⠔⠀⠋⠁⠇⠇⠬⠀⠭⠀⠑⠭⠻⠞⠎⠀
⠁⠀⠎⠇⠊⠛⠓⠞⠀⠏⠗⠑⠎⠎⠥⠗⠑⠀⠕⠝⠀⠮⠀⠧⠁⠇⠧⠑⠀⠱⠊⠡⠀⠕⠏⠢⠎⠀⠀⠯
⠀⠁⠇⠇⠪⠎⠀⠮⠀⠺⠁⠞⠻⠀⠞⠕⠀⠏⠁⠎⠎⠀⠹⠗⠳⠛⠓⠲⠀⠠⠮⠀⠓⠕⠇⠑⠀⠔⠀⠮
⠀⠏⠊⠌⠕⠝⠀⠊⠎⠀⠇⠜⠛⠻⠀⠀⠹⠁⠝⠀⠮⠀⠓⠕⠇⠑⠀⠔⠀⠮⠀⠏⠥⠍⠏⠀⠯⠀⠎⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.