Now we are getting somewhere.
Agreed. You've identified a rudimentary passing criteria that some sort of recording devices will be able to play back answers to simple questions. Allow me to detail some issues I expect that might cause such a suggested protocol to be rejected.
Asking an unknown entity's name would not be a good choice, as it cannot always be verrified easily as an intelligent response. For example, if the reply is a loud and enthusiastic, "Soap Hockey!" it may be unclear if this is an intelligent response.
It will likely be necessary to have questions with more verifiably-intelligent answers. For example, asking the sum of 2 and 2, expecting an answer of "four". You've not yet stated any of the nature of the paranormal entities you plan to contact though. Perhaps they are mischevious or exceptionally poor at math and will answer "three" (or perhaps more skilled at math and cryptic, answering something like "second even"). If you plan to allow for such a response to be deemed an "intelligent" answer, your detailed criteria for successful answers will have to be rather comprehensive if the results are to be anything close to self-evident.
Further complicating things is the concern for the chosen language of the contacted entity. It could take a good deal of time to broadcast questions in multiple languages. Unless you're asserting that such entities can pick out the question from their understood language amid a cacophony behing thrown at them at the same time (I'd be interested to hear what evidence would lead you to this particular conclusion). Is the entity going to be limited to responding only to languages that are broadcast, or will an answer that appears to be some sub-dialect of Klingon also be accepted? If the field of "intelligent responses" is widened too far, the claim ends up essentially being "I'm going to ask questions, and after each some kind of sound will be recorded".
It seems ultimately you are unable to guarantee any nature to the sounds that will be recorded apart from some indication that currently understood science would predict that these sounds would not occur. This then bring us to the next point on how you plan to set up controls to rule out other ways sounds might end up recorded (so that indeed, currently understood science would predict these sounds would not get recorded). You've noted already a willingness to use a Faraday Cage, but that does not provide the full measure of protection the JREF is likely to require. For example, I'm unfamiliar with any technology to interfere with a Hypersonic sound device. Additionally it seems there would be great opportunity for any of the numerious asistants, or even the various pieces of technology, to cause sounds to get recorded.
In summary, your claim appears something along the lines of "I'm not sure exactly what's gonna happen, but I think it'll sure be neat!" Such a test will be rather difficult to design a protocol for, since for your sake you must account for all possible paranormal things that may occur, while at the same time eliminating any possibility that something unparanormal could be given a passing grade. Since there are a great number of unparanormal things that are also "neat", the task will not be easy.