Hi All -
I have the DTB-H260F. Picked it up at a Circuit City in Glen Burnie, MD. Boy, I had to chase this unit down. The inventory said only 1 left in the store and I had to convince the guy who worked there to keep looking in the stock room until it finally turned up.
Backstory - I bought this unit for QAM reception on Comcast Cable. I have an Sony GWIII so it does not have a built in ATSC tuner. I do have HDTV via Comcast but I have problems getting the set top box work with closed captioning for HDTV programming (EIA708). Anyway when I got my Panasonic plasma TV for my downstairs room, it has built in ATSC tuner for QAM programming. I was surprised to see the captions work for all the stations that my Comcast set top box did not display. Rather than fighting with Comcast to convince them that their STB was flawed, I decided that maybe a STB for clear-QAM would give me access to closed captioning. With this Samsung unit, I was right! It picked up all my QAM channels (clear) and was able to display the closed captions.
However, a major caveat: this unit has picture breakups! I can't explain it, the picture sometimes breaks up as if the signal is poor. How can it be poor - the Comcast STB was perfectly happy with it, in fact, I have it on a splitter between the STB and the Samsung. I even tried removing the splitter, no improvement. Strange that a much older box is better at QAM decoding than the newer Samsung (I've had the Comcast STB for a while now, maybe 3 - 4 years now. It's a Motorola DCT6100).
Anyway, when I did a channel scan with the Samsung, I was able to pick up almost 320 QAM channels! Obviiously, a good chunk of those are scrambled so I won't see those. What is odd is my Panny picks up different channels that the Samsung does not see, and the Samsung picks up channels that the Panasonic missed. Go figure!!! I figure that the Panasonic ATSC tuner has a wider range than the Samsung, but that doesn't explain why the Panasonic missed some channels that the Samsung STB caught.
Bottom line, I bought this unit to get access to more closed captioning performance and it delivers. However I am disappointed that it has issues with ipicture breakups with what appears to be signal quality issues. I might have a defective unit but I can't just take it back and ask for another one - I had a hard time getting this one as is!! Why are they so hard to get?!?!
I am wondering if there is a firmware update for this Samsung STB to maybe improve my signal quality - I can't imagine I have a weak signal, I have a video amplifier in the coax distribution network.
Finally, is there a service menu for this Samsung STB so I can see the error counts and the automatic gain control setting so I can get an idea if the signal is being boosted and if the error counts are increasing? I can see this information on my Motorola STB.