Most folks don't know it, but Herman Munster was a HAM RADIO OPERATOR! In episode number 18, which first aired on January 21, 1965 Herman is goofing around with his ham radio set (which is apparently a homebrew -naturally- transceiver with headphones, microphone, large horn style speaker, a large quantity of tubes, one HUGE tube and a bank of dry cell batteries) when he overhears some kids playing Martian with their walkie-talkies. Naturally the kids lead Herman and Grandpa into thinking there really ARE Martians on Earth, and being good citizens they notify the airforce. Most significant trivia we learn from this episode is Hermans call: W6XRL4 above is a rare copy of Hermans QSL card:

Herman Calling CQ In QSO with the Martians

I have to give credit to the KCØJEZ KCØLUA KCØSBC webpage for this info. It was too funny to pass up. Also W2UGS (SK) for sending the CQ audio clip.