Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: can record from standard air wave tv without converter? Is there a hdd included? How many hours can one recording session be?
Document: She uses it almost exclusively for playing VHS tapes and DVDs (there are many much more affordable alternatives for that type of use) and occasionally (maybe once a month) to record something to DVD. She doesn't need it to serve as an over-the-air signal converter and hasn't changed the standard set up configuration. After nearly a year, she hasn't experienced any failures. When that time comes, I will recommend a Toshiba as a replacement.
It is the only DVD recorder that records to Dual Layer media. So can record at better resolution, like SP, for almost 4 hours. Results are very good. This model is not in production any more. This one is almost new, being made in Jan 1012. The VHS tape works well, and can record easily to DVD's. Has a digital tuner so a converter is not needed- can connect directly to the cable input, without using a cable box.
We have an extensive VHS and DVD movie collection and we also record movies/tv shows off the air. We had a separate VCR and Panasonic Hard Drive DVD player that we love for storing movies without disks. Unfortunately, the death of analog television meant we had to change. Since our Panasonic Hard Drive DVD recorder is a gem, we chose the latest Panasonic DVD/VCR recorder. This machine is excellent and does everything for you.
If you want to use this units VCR for recording Broadcast DTV from your local stations it will not without a Converter Box. Without a box the machine will show " Cannot Record Digital signal ". However with one it worked fine and I just tested the tape in another machine and it worked well. This can be a problem but not here and I expect the same great service as with my much older Analog & no tuner Panasonic models. I saw a review that complained about the editing system and chapter division.
So far, so good. My use is for recording TV shows from antenna for use with a digital TV. This device is easy to use and set up; easy to record and re-record on DVD-RAM. Disappointed that with the included digital tuner it would not record on VHS after digital transition -- like old VCRs which can be set up to record with converter box preceding it. No problem with viewing VHS tapes recorded on other VCRs.
The picture quality is excellent on the new over the air digital channels, same for DVD playback. The operational manual is a little overwhelming at first, it took me about five hours to play with all the features and test them out. The biggest failure of this unit is the amount of time it takes to navigate from different menus and sub features. One however has to consider that there are not many units on the market in this price/feature range.
I bought this unit for 1 specific task, to convert several boxes of VHS tapes to DVD. The unit does this very well, HOWEVER, the one thing that surprised and disappointed me is that the FR (Flexible Recording) function does not work in the "copy VHS->DVD" mode. Blank, single sided DVD's hold 2 hours of program when recorded in "SP" or Standard Play mode.
I've bought two of these machines now, just returned the second one today. I really enjoyed the functionality of the machine, it worked fine when recording digital tv to be watched later. The quality was OK as long as we did it in 2-3 hours per disc mode. If you try to do 6 hours, it's pretty pathetic. After a few weeks the first machine began to freeze up.
Will not record copy protected VHS to DVD.5. Channel surfing is slow6. Rumors that recorded DVDs will not play in standard players. I suspect users didn't "close" the burn session, mine seemed to work OK.7. Rumors that these units have a short life like other brands.
If you want to use this just to transfer your VHS tapes to DVD, it's not bad. But as a DVD player or particularly to record TV shows for playback like a DVR, it's basically complete junk. I don't think I've ever watched for 2 hours without it crashing at least once, particularly if you are watching something while also recording (which it can supposedly do). Crashing means you have to turn off the power and wait for it to re-boot which takes several minutes.
Answer: Yes.  It has a digital tuner, and can record off the air without a converter.  No, there is not an HDD.  Depending on the quality required of the recording, up to 8 hours.  The long recording time works for most shows.  I have not found any that were unacceptable at this recording quality.  There are higher qualities available, but the record time is shortened to 4, 2, or 1 hour.