I have a DVD recorder with a standard tuner. Is it possible to buy a separate HDTV tuner, attach an antenna (of air) as input, and then plug that into a DVD recorder and then record digital or HDTV? If so, will any HDTV tuner work and are there any potential issues?
The DVD recorders can only record from an SD 480i format signal. Some HD tuners can downconvert an HD signal to SD format, but you won't be recording the higher quality HD format - is that what you want? It would be at best regular DVD quality, probably a bit worse since the DVD recorder has to compress it again.