Not exactly as simple a question as you might think. Type acceptance is for commercially made equipment. It means that if sold commercially by the manufacturer/dealer/etc as an amateur radio, then the thing has to meet certain specifications and has to have been tested and passed by the FCC. 'M.C.' is absolutely correct about that, but remember, that's for commercially made equipment made for amateur use.
You can build any equipment you want to use for amateur use. It does not have to be type accepted (as such), but it does has to meet some minimum requirements. That means that you can start by using any piece of equipment and then modifying it to meet those minimum requirements. If it doesn't meet those requirements, somebody will tell you about it
! The smart thing to do would be to 'clean' the thingy up before starting to use it, or while using it, before getting to the FCC getting involved point. That's what happens with 'other' commercially made stuff, like from the military, commercial radio services, etc, that are used in amateur service legally. The rules say that there are certain things that equipment has to be capable of. It's up to the user to make sure that it IS capable of those things, and it doesn't matter where that equipment started 'life'. (Motorola doesn't make 'amateur' equipment [as such], but they make gobs of stuff being used on the amateur bands.)
So, the answer to your question is 'Yes, and No'. Just depends on YOU, the end user...
- 'Doc