The universal calibrator installed inside the Ten Tec Century 22. This is the solid state version and can be used standalone.

This is the "tube" version. This variation is designed To be installed inside older tube based receivers. It can also be used on either batteries or on 12 vac power.This calibrator is installed inside a Drake 2C receiver.

I had a lot of guys ask me where I got this project box from. Hate to disappoint anyone, but this box came from Radio Shack. I changed the hardware and put in countersunk Allen screws.
