|Image Credit: Black Cat Systems|
This handy, inexpensive project will get you in the 22 meter band, per Part 15 of the FCC regulations allowing for unlicensed operation in the 13553-13567 kHz band.
The kit includes the PCB and components, including a custom programmed micro-controller that will continuously transmit the ID / call sign of your choice, up to 8 characters, at about 13 wpm.
The complete assembly instructions are available on the kit page and it looks like an intermediate difficulty build, three evening effort.
What call sign would you choose? Warm up the soldering iron and put your Part 15 beacon in the air!