Just watched the most recent episode, from a couple nights ago, of Last Man Standing. Tim Allen's character is a HAM and has the call sign KA0XTT. The "XTT" is a bit of a private joke as Tim's character name on "Home Improvement" was Tim Taylor. So, ex T. T. Yuk, yuk.
Info on how the producer, who has a HAM license, incorporated HAM radio into the show and got the call sign.
The QSL card that is sent out:
We've not been using our radios much and I'd really have to do a review of the band plan, for one thing, if we did. But we do have our call signs as our auto license plates.