Anyone know of a sub-$1000 device that will record and play back "raw" ATSC signals?
* a recording device that will take an arbitrary digital TV channel, convert it from analog to digital (all airwaves are inherently analog at some level), and record the bits verbatim, along with some meta-data like the time of day, the frequency recorded, and maybe some extracted data like the digital sub-channels in the stream and information about what is playing on each sub-channel now and in the near future.
* ideally, DVR-like timer recording capability.
* a playback device that will put that recording onto a specific RF frequency. If the RF frequency is the same as the originally recorded frequency, my television should be fooled into thinking it is a channel that the TV already has mapped (e.g. RF channel 14, "display" as channel 20).
* ideally, a DVR-playback capability that would make the box act like a DVR, albeit one that uses a lot more disk space than your typical DVR. The output would go to the TV over a dedicated AV connection not the RF "CATV/Antenna" connection.
* ideally, the ability to recognize a USB device and copy the raw recording to it for storage or analysis/playback on a computer that can read the format.
Q: The use of such a device for legal and engineering purposes is obvious, but why would any normal consumer want such a thing?
A: Because at least then I'll KNOW for sure that I recorded what my receiver (or more specifically, the receiver in this magic box) received, not some partially-processed intermediate version. It will also allow me to record content encoded in formats that haven't been developed yet (as of January 2015), so I can play them back on a TV that supports that format.