Yes you can, but all the locations will be watching the same show from the box. The FiOS boxes only output a single program at any one time (regardless of which of the outputs you are connected to).
If your TVs at the non-box location have a QAM tuner (look it up in the owners manual) you will be able to receive your local OTA HD and SD (but none of the national channels as they are all encrypted) by splitting and distributing the raw signal to those locations..
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