Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Will this allow us to record off t.v. without an external digital tuner?
Document: The Toshiba DVR 660 VCR/DVD combo has a Digital tuner so you can record Off The Air OTA channels with it. It is a little bit complicated to use but the manual has a lot of information. If you want to make quick recordings of HDTV and don't care about high image quality you can easily use VHS tapes and reuse them to record over and over.
I couldn't be happier with this combo vhs/dvd recorder in regards to performance, features, and ease of use. I likewise read the reviews here and for other liketype products; this one seemed to have the least amount of "issues". Here's what I found:  flawlessly and easily installs out of the box, and the digital tuner works great. While this product sure has lots of features, it's really a snap to set and record to your heart's content.
Initially I was looking for a VCR with a digital tuner to replace the old analog VCR. My needs were to record football games during the season, and tape overlapping TV programs for later viewing. So, I didn't need anything fancy (read expensive). Alas, there just wasn't much on the market.So, I started to look at dvd recorders, hoping to find an inexpensive  plain vanilla one, and came across the favorably reviewed Toshiba DVR 660.
I purchased the unit mostly because of the digital tuner for the VCR mode. I still time shift shows and this unit is working out just fine for me.
This is my 4th DVD Recorder (the first Toshiba one). So far, the unit works great. Hopefully it will hold up better than the last 3. It has all the features I needed (and then some): digital tuner, 1080 upconvert, and VHS. The 1080 upcovert looks better than I expected, almost as good as the original DTV transmission that I recorded off the air.
Once you get the hang of it though, you're back to the days of easy recording of your favorite shows without a lot of fuss or expense.JULY 17 - IMPORTANT UPDATE - THE THING DIED OVERNIGHT! I still stand by it being able to record and I appreciate the nice comment. However this morning the clock wasn't on and the thing had simply died overnight for no apparent reason. It is plugged into a surge protector.
I ordered the DVD-VHS Player and Recorder and found it to be everything I wanted and more. The quick guide and the manual where very detailed. The digital turner worked well and I recorded with no trouble at all to a dvd+rw disc. The remote has the buttons to set record program and time set review. I did'nt buy the HDMI cord with the recorder and wish I had. You'll pay alot more at Radio Shack.
They said it was impossible to record DTV to a tape. I didn't see why it couldn't be downconverted, taped, and upconverted again.They were wrong (and I was right). This is just like my old trusty DVD/VCR combo with more capabilities and I can use it with HDTV! I can record to either VCR or DVD because it has a tuner.
I have purchased 2 of the these in the same exact model. I am very pleased with the ease of use and also with their performance. Not only can you record on DVD's, but you can also record on VHS. For those of us who still have blank VHS tapes to use up, this is a plus. Since you can watch your recorded items on both VHS or DVD, you can make the most out of this electronic device.
We purchased the Toshiba D-VR660 5 days ago and it has failed to timer record on 3 occasions. We have followed all of the programming instructions including the "timer set" feature which we are familiar with from our old Pioneer DVD recorder. On the occasions when the timer recording failed, the recorder's channel was still set at the previously recorded channel. We are not sure if the tuner failed to change the channel or if the machine shut itself off before the next timer recording began.
Answer: I have mine hooked to my Dish Network receiver, I just put the receiver on the channel I want to recordfrom, I do have to change channels through the receiver for different programs, so I would say YES, youwill need an external tuner. I do like this DVD recorder, I purchased another one for my bedroom.