[quote]ORIGINAL: strato911
The issue of selling Tx crystals is the same way. It is legal to sell them, but ILLEGAL for the end user to swap them (unless they are appropriately certified / certificated).
Nope, the regs via section ยง 95.645 are a lot clearer on the issue that manufactures MUST control accessibility to the frequency determining components of a TX and must NOT make Plug-in crystals accessible to the user.
People often use that section, which is specific to manufacturers, and reinterpret that to end-users to say they are not allowed to remove plug-in crystals.
It all boils down to whether removing the crystal from the front where all the buttons are without the use of special tools is an internal modification!
And no jury in the world is going to convict someone for removing a plastic dust hatch with their finger tips when it is located in an easily accessible location on the front of a TX with all the other buttons and knobs. Its just a fact Jack. A judge and jury will determine that an internal modification is one that requires a screwdriver or other "mechanical" device that differentiates what is ordinary and expected from an end-user from a person demonstrating technical proficiency. People on juries know what "internal" is....its where all the wires, dodads, and solder stuff is.