Originally Posted by JHBrandt
There's not a great deal of variation between DTV tuners but there is some. I can tell you that the tuners in my DTVPal and CM-7000Pal (I have one of each) are a bit better than the tuner in the Homeworx. The HW tuner seems both less sensitive and more susceptible to adjacent-channel interference, so it has trouble with very weak signals such as low-power stations, particularly ones next to strong ones.
Depending on the tuner's specific issue, sometimes a different antenna or a low-noise amp can help. The DVR+ may not have the best tuners, but CM does have a good selection of antennas and amps. Since the CM-7400 also had a reportedly weak tuner, it makes one wonder if CM intentionally chooses DVRs with weak tuners to boost their antenna sales
(They must have messed up with the CM-7000Pal and its good tuners.)
I appreciate your thoughts, thank you.
Maybe CM felt that this flagship DVR+ didn't need their best tuner. By most accounts / articles, it's considered pricey at $250. I didn't and don't feel that way though. As I said in the DVR+ thread, using HDMI 1.2 and USB 2.0 seems to indicate to me that there was a concerted effort to keep costs down; knowing they might get some grief regarding pricing. For a unit just released for sale months ago, the use of those dated standards (HDMI 1.2 has been around 8+ years and USB 2.0 over a decade) might explain the tuner of choice too. I'm not up enough on tech at the moment, but I wonder how many 2014 released gadgets (TV's, AVR's, DVD players, etc) have HDMI 1.2 and USB 2.0. I would guess very few to none.
That all said, the use of those older standards doesn't seem to compromise the intended functionality of the DVR+, so a smart move on CM's part, with the initial experimentation of sorts (first DVR offering). I'm simply stating that this logical mentality, if consistent, might also apply to tuner selection...
I have not experience with the CM-7000, but from what you share and others, it is highly regarded for its tuner. In the DVR+ thread:
"Not to my knowledge.
Just for the record......
Prior to purchasing the DVR+, I contacted CM regarding tuner capabilities. I was told initially that the tuners used in the DVR+ were as good or better than their own CM-7000 DTA box (the gold standard, in my opinion, for tuner performance).
Although the DVR+ is somewhat decent in this area (I'm being generous!), it doesn't meet or exceed the performance I was told to anticipate!
In speaking with another representative at CM, I was told that the original person gave me wrong information and that I shouldn't expect the same (or certainly better) from the DVR+.
They tell you one thing to sell you on the unit and another once you own it!
.....Way to go, CM!"
Channel Master DVR+ Owners Thread
I guess it's not exactly popular and / or easy to be swapping tuners in these devices?