Some HDTV ready plasma (e.g. Maxent MX42X3) don't have any tuner and so they are priced at low. If I connect them with VCR which is connect to the wall can I use the tuner on VCR to get TV on the HDTV monitor? I know I only get SDTV signal. This is talking about the case of using the NTSC tuner. Some standalone tuner has only ATSC tuner for HDTV and no NTSC tuner for SDTV signal.