Callsigns | CW - learn and develop morse

In this tutorial we will practice randomly generated callsigns.

10 Callsigns

We can generate callsigns with the callsign command. We indicate how many callsigns we require with a following number:

  # callsign.rb

require 'cw'

cw do
  comment "test 10 callsigns"
  wpm 20
  callsign 10 
end

callsign.rb

Note: The callsigns generated currently are restricted to UK callsigns. Adding further countries to the callsign database is simply a matter of adding callsign formats to data/callsign/callsign.yaml.

CQ DE callsign K

Here is a script that will generate 10 random callsigns, and wrap them with a preamble of ‘CQ DE ‘ and end with ‘K’. It will also randomize the frequency, and randomize the speed. Useful for contest practice!


# callsign_2.rb

require 'cw'

puts "cq de callsign k 5 times"
5.times do
  cw do
    comment 'random frequency, random wpm callsign with pre and postamble'
    frequency 500 + rand(400)
    wpm 25 + rand(10)
    callsign
    (words.unshift "cq de") << 'k'
    print_letters
  end
end

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