CQ World Wide Contest exchanges were randomly selected to be roughly proportional to recent participation for someone operating from North America. This means that some types of exchanges are much more common than others. If you would like a slightly harder challenge, take a look at the CQ World Wide Contest Encore, which gave each exchange an equal probability of being selected.

For each exchange, try to head-copy it. First, the phrase is sent in Morse code. Then it is spoken. And finally, it is sent again in Morse code. If you missed something the first time when it was sent, the second time allows you an opportunity to learn it.

73 de AD0WE!