This antenna launcher is a new twist on the compressed air launchers hams have been using for decades.
I’ve watched YouTube videos of potato-launching air cannons and noticed many of the new designs use a solenoid-operated water sprinkler valve, less the solenoid, to release the compressed air and propel the potato though the barrel. I thought, why not use this design to launch our antennas? I normally have issues with losing my point of aim when turning the large manual valve on my traditional launcher. Maybe you have, too. There may be a few antenna launchers out there with the sprinkler valve modification, but I imagined one that would shoulder, aim and fire like a rifle (Photo A).
This design does just that with a pull of the “trigger” and no manual valve