It may seem like a trivial question, but the WWN, or the Wizarding Wireless Network seems to take its name from the term "wireless," used earlier in the 20th century. But the magical community doesn't use electricity, just as it doesn't use almost all technology. And without electricity, there's no use of radio waves or the concept of a wireless.
But the term "wireless network" implies a strong understanding of radio and TV networks as well as radio, or the wireless.
It just seems to stick out like a sore thumb, since everything else in Harry Potter seems so well thought out to focus on magical ways of doing things, but this seems almost as if J. K. Rowling just thought, "I need a magical form of radio," and just added "Wizard" to the front of the name for it.
Is there any background on this? Was it worked out by someone with enough of a muggle connection that they understood the concept of radio networks? If not, how did "wireless network" end up in the name?