Related by context. Frequent words. (Click for all words.) 63 semaphore 54 telegraphic 49 teletype 49 beep 47 ham radios 46 telegraph 46 garbled 46 beep beep 45 ham radio 45 alphanumeric 45 DTMF 44 coded 44 phonetically 44 musical notation 43 alphabetic 43 alphabets 43 beeps 43 coded messages 43 QSO 42 crackly 42 phonetics 42 callsign 42 typewriter 42 carrier pigeon 42 printf 42 shorthand 42 telex 42 tuning fork 42 garble 41 hexadecimal 41 VHF UHF 41 decoded 41 rotary dial 41 phonetic 41 Beep beep 41 carrier pigeons 41 VHF 41 alphabet 41 HAM radio 41 deciphered 40 ethernet cable 40 motorola 40 decipherable 40 audible 40 Coded 40 beeping 40 shortwave 40 RTTY 40 bluetooth 40 lingo 40 transmitter 40 beepers 40 skype 40 shortwave radio 40 #.# MHz [001] 40 VHF radio 40 synthesizer 40 vowel 40 radios 40 decode 39 walkie talkies 39 preprogrammed 39 disembodied voice 39 foghorn 39 chirp 39 pidgin English 39 anagrams 39 document.write 39 txt 39 pidgin 39 manual typewriters 39 pinging 39 spellcheck 39 designator 39 Roman alphabet 39 cypher 38 literal translation 38 phrasebook 38 Clapping 38 compass 38 alpha numeric 38 vowel sounds 38 ROFL 38 phonemes 38 tannoy 38 spelling 38 trill 38 walkie talkie 38 pronunciation 38 ping 38 minesweeper 38 pagers 38 prefixes 38 dictaphone 38 CB radios 38 polyphonic ring tones 38 undecipherable 38 QSL via 38 beeper 38 wav 38 Wooo