Drake TR4 Crystal Testing

[@KevinFournier-xd3ub]

This looks so fun. I’d love to learn the inner workings of radio receiver/transmitters.

[@k8byp]

You can! Start with Radio Engineers Handbook, learn about electronics, and get a small tube receiver to experiment with. Avoid Ham radio publications for education, there is too much error. This is what Amateur Radio is about! Learning and doing.