: ATSC Tuners In HDTVs (see Samsung Poll)
2011-12-08, 03:58 PM
Hmm, this is exactly why it's so hard to tell on these things. My parents' first Sony had the excellent information on signal strength that be236 talks about, the second has none of that and won't even let you add individual channels. My Panasonic plasma seems to have a good tuner, but it has none of the diagnostics goforit's has. So things can be very different even within the same brand.
The best thing I can come up with (if you can't play with it in the store) is to look up the model number, google and download the user manual online, and then see what it can do. I did this for the 47" LG I was considering recently and it does look like it has a good system for manually adding channels... Looks similar to my LG (Zenith) set top box.
2011-12-09, 08:39 PM
:confused:I've got a Sharp TV which has no provision for manually entering DTV channels, I have to scan each time. Since I am out in the sticks and have a rotator, I can never simply turn the antennae to pick up weaker signals. Can I program the set top tuners manually, or do they simply scan for available channels like my TV?
2011-12-10, 01:37 AM
Some STBs (DTV converter boxes) have manual channel entry.
For example, I know Artec models and DTVPal (made my Dish/Echostar) have this feature.
2011-12-13, 11:15 PM
The Centronics ZAT502 HD TSB and other identical clones allows manual scan/add of a single channel, but does not have a manual delete feature....
2011-12-23, 04:23 PM
I was looking for a small TV for my exercise room.
Does anyone know what Sharp tuners are like?
It's a LC-19SL410UT, and it's a little over $200.
The Vizio I tried had a terrible tuner, so I will avoid that brand.
I also found a budget Toshiba (19SL410U) from BestBuy, what are their tuners like?
2011-12-23, 06:12 PM
Ya, I tested a recent Vizio and Sansui LCD TV (year 2009?) and it's no better than my older Sony 2006 CRT HD TV.
2011-12-27, 11:47 AM
danomac, I have Sharp's previous 19" LCD model at work, and I was surprised at how much signal that little TV could pull inside a downtown office building with an old set of rabbit ears. And despite its rather rudimentary user interface, the TV responded much faster to my commands than my 40" Sharp LED TV at home (a 700UN series).
Unfortunately, I have no idea if Sharp carried over the technology from their old model to this new model. I can't even assume they carried over the tuner circuit, although I do get excellent results with my 40" Sharp LED at home. But that's an older model as well.
Still, Sharp does have an excellent reputation with their tuner circuits. And for $200, if the store is pretty decent with its return policies, it might be worth a shot.
2011-12-27, 05:30 PM
I own a Toshiba 19SL41OU LCD TV I bought in the US. I found the tuner to be very good for a small TV. If hooked up to an antenna for OTA broadcasts it pulls in just as many stations as my Sony 42 inch. The signal meter data is not as good as my Sony, but adaquate. It gives the signal strength in a percentage as well as signal to noise ratio. It also has 2 HDMI ports and a PC port. Had this TV for 6 months now with no problems.
2011-12-27, 06:47 PM
Sometimes a TV might have a bad tuner. Sometimes a person is just not using a good enough (or a correctly installed) antenna.
Check out your signal possibilities on TV Fool and figure out what antenna option you might need. In a lot of cases an outdoor antenna or attic-mounted antenna will do orders of magnitude better than a set of rabbit ears.
My HDTV is a Panasonic Viera and I have an Antennas Direct Colorstream C3 in the attic (all our stations here are upper-band VHF; we have no UHF) and I get terrific reception. I can't tell if it's the TV or the antenna but I don't really care! :)
2012-01-22, 10:27 PM
Neither of my 2 Samsungs (A550 and B540) can display any info on TVO. Two older plasmas (Akai and LG) can display TVO correctly.
I am on the latest firmware for both Samsungs. I heard newest Samsung tuners work and would appreciate if anyone can confirm with the model number. Samsung tuners are otherwise very fast and they show info and guide (12 hr).
It is too bad. If anything, TVO and PBS are the 2 channels I appreciate info the most. Honestly, I don't bother watching TVO much as a result.
2012-01-22, 10:56 PM
Check my sig, my Samsungs are fine with CICO-DT-32
2012-04-07, 08:45 PM
So after learning that the Condo rules only prevented mounting an antenna on the sides of the building or the balconies and not on the rooftop, I installed mine yesterday. Mounting a CM 4221HD with a CM 7778 PreAmp on a metal pole and bolted that on the side of the chimney, I had my setup over within a few hours.
I got all the local Canadian channels and well as Fox, CW, NBC and about 8 PBS channels :p... that is on my LED Samsung HDTV.
Funny thing is, I got a converter box for a flat screen CRT in order to channels on that to and I get the same stations as mentioned above but I also get CBS. I tried switching the cables on the cable spliter I put on the TV out of the PreAmp's power supply but that did no difference. After that, I removed the spliter and plugged the TV out from the power supply to my LED TV, still no differences.
So could it be that a $40 converter box is better than the TV tuner inside my Samsung LED TV?
2012-04-07, 08:55 PM
it is possible, if like you said comparing apples with apples, that the tv tuner on the Samsung could be using a different tuner chip.
Try adding an additional attenuator to the Samsung. If you don't have one, a two way splitter can be used as a 3.5 dB attenuator.
I have a 3dB attenuator on one of my cheaper Panasonic entry level LCD that I suspect has a crap tuner chip. I would have the channels on the other televisions in the house but they would not show up on that particular one. Ever since I added the attenuator I have had no problem.
2012-04-07, 09:37 PM
I have a Samsung at my cottage, and I get all the channels OK (except VHF, but that's a whole other story not quite related to the tuner).
What I have noticed is that on some channels with weird PSIP or such, my Samsung will simply not see the channel on autoscan. The tuner itself has no problem though. This might be true in some other non-PSIP situations too. You could try entering the actual RF channel number of WCAX (22.1) and see if the TV finds it. If it doesn't....(and you are not tuning into WVNY instead) then I don't know what to think.
Is the WCAX signal borderline on the converter box, or is it strong? If it's borderline, I could understand, but WCAX is generally a very strong signal, so if you get the others, you shouldn't have a problem.
2012-04-07, 09:41 PM
Are you scanning or manually adding the channels, I would try manually adding them,... you may find you get more channels than you are already getting with either tuner right now.
2012-04-07, 11:58 PM
Well for a general reply, I get a signal on my CRT for CBS (which is channel 3.1 not 22.1) of about 95% while I get Fox at about 75% and yet, I get Fox just fine on my LED TV. Entering the channel manually doesn't work.
To add to the weirdness, when I had that antenna (and even cheaper ones) in my living room, pointing out the window, I use to get CBS on my LED TV (but not Fox).
Right now, that antenna on my roof is pointing that the opposite direct of where I use to point in my window. But it really can't be signal or I wouldn't get such a great reception on my CRT. This is too weird.
Oh and PanaMark, you may be onto something. Tell me if I should rearrange my setup before buying anything else:
10ft cable (attached with other using 2 female adapter)
1ft cable (goes through wall with 2 wall plates and coax inputs)
PreAmp Power Supply
Obviously, there's another 6ft cable to the CRT on the other part of the spliter
BTW: My TV Fool results: http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3d267ec40ef10bb7
2012-04-08, 02:35 AM
If a straight connection to the TV from the power supply does not bring in CBS, then that pretty much rules out cabling as an issue. Signal strength also does not seem to be an issue...
All I can think of is what I and later dirtroad mentioned earlier, which is to manually add the channel. This involves entering the actual radio frequency channel number into the TV directly. I said channel 22.1 because that is WCAX (CBS)'s actual channel - the TV goes to this channel, and then finds data that tells it to show it as 3.1.
The same applies to many other stations: for example, FOX is actually on 43.1 despite showing 44.1, and CBC is on 21.1 despite showing 6.1.
Some stations, though, do not do this: CFCF shows 12.1, and is actually on 12.1. But that is rare, for the most part.
It's possible that a scan is not working correctly as it should, and you have to force the TV yourself, hence why you would need to enter 22.1 to fix the problem. Once fixed, you should never have to do it again.
I get the feeling, though, that your problem might actually be something much more annoying and harder to fix, like a weak tuner, and I have no clue what to recommend for that.
2012-04-08, 08:48 AM
22-1 works, well 22 actually. If I enter 22-1. it didn't do anything but when I entered 22, it unlocked 3-1 and 3-2. Makes me wonder what else I'm missing.
Anyway thank you all for your inputs I'm happy to be an OTA viewer and saving $600+ a year :)
2012-04-08, 09:00 PM
A TVFool report lists both the Virtual (what you deal with after scanning) and Actual (the RF) channels, so if you don't have one, run it for your address. You may need to use the option of showing pending applications to see everything.
2012-04-08, 10:22 PM
Happy to help. You're right re entering 22 only - it's my Sony that requires the -1, not the Samsung. My Samsung is reserved for the cottage, and is only getting plugged in next month when it gets warmer, so I had no way to check.
If you think you're missing anything else, all of the actual channels are listed in your TVFool under the "real" column.