4Tuner Tablo with excellent signal has intermittent digital pixelation


#1

Less than a month into our cord cutting and using a 4tuner dvr with 5tb drive. I did a trial run with an indoor antenna from wally world and was able to get 15 of the 20 available. It seemed to work well enough so I picked up a Mohu sky 60 and installed it… grabs all 20 channels and they all have 5 green dots.

The problem is that i get a lot of random digital pixelation. Bluebloods will be rolling along great and all of a sudden sound drops and the image scatters into digital clutter for a few seconds. It will do this throughout the entire recording. I have not yet really tested to see if it does this in real time ( going to check that today). I know this could be several possible problems and I am posting this in the hopes of a " oh yeah, common problem, easy fix" answer. ; )

Another thing that seems to happen is i will get 4 1 minute recordings of the same episode and no full recording even though another show recording at the same time will do fine.


#2

Submit a ticket to @TabloTV. They can look at your logs and confirm what caused the issues.


#3

@chappyfl
Do you live near cell towers?
Some have had good luck with a in-line
LTE Filter

Search for it :grinning:


#4

will take a look… watching “the view” now to see if it is live tv as well… baaaaaarrrf…lol


#5

hmm… just looked at my antenna specs (mohu sky 60) says the amp it comes with has cellular filter already…


#6

Sounds like a signal issue - How far are you from the towers?


#7

farthest is 34 miles and it has a perfect record so far… the two towers giving me issues are 15 miles out… with relatively few cell towers in the way…


#8

When you play back the same segment a few times, are the pixelations exactly the same and at the same time-point in the playback? If not, possibly consider or test whether wifi throughput issues can cause similar symptoms/pixelation which differ on each playback?

Also I bet you can find better test-patterns than The View.
Try Megyn Kelly’s show… Watch/fastforward until near the end - sometimes she changes outfits due to showing a tape. :wink:

ps - shoutout to the SMPTE protocol.


#9

@chappyfl

It might just be me, but I’m NOT A fan of the sky 60. Ditched it after one week.

A simple non amplified yagi did a better job for me.

Tablo support analysis of your logs will tell.

Chas


#10

bit of an update. I spent some time watching live on all the big 4… cbs/nbc from towers 15 miles away had problems. abc/fox from towers 34 miles away are flawless. This was live tv not recordings. I am guessing that this rules out issues downstream from the tuner.


#11

This is why I asked how far you are from the towers. It sounds that the built-in amplifier on the antenna is causing problems for the channels coming from the close towers. Try turning it off if that is possible.


#12

Does the pixelation occur when watching Live TV via the Tablo? If yes, try disconnecting the HD and watching Live TV again. Could point to a HD or USB cable problem.


#13

You have that interesting situation of being over powered by some signals and under by others. Attenuators can be used to decrease signal. You may have to read up a bit on this or find somebody locally that has already conquered the scenario in your area.


#14

Sounds like too much signal. I had that problem and instead of using an attenuator, I rotated the antenna away from the direction of the closer towers. It lowered the gain just enough to prevent the problems.


#15

I’ve been fighting this problem for a couple of years now. Many, many trips up on the roof to adjust the antenna. I have 5 green dots on all my channels but I get periodic pixelation on some channels.

I had never heard of an LTE filter. It does look like there are several cell towers around me. Maybe I need to try an LTE filter.