How long is FCC equipment authorization good for?
If the product does not change in any electronic way, the authorization is good indefinitely. Of course, digital products and technology change rapidly, so be suspect of very old FCC authorizations. Make sure the markings of the models you use are the models that you are testing. It does no good to test Model A, but manufacture Models A, and B. You’ll only have a report for Model A, and you may need to show others that Model B is also approved. Have a good model number control system so that each form of electronic circuit that gets approval, has that approval tied to the model(s) that you will make from that electronic system.
