On Thu, 21 Feb 2019 18:03:25 -0800, Jeff
Liebermann wrote:
On Wed, 20 Feb 2019 15:53:14 +1100, Peter Jason wrote:
Last year
That would be 2018.
Yes.
I had several month's
Several would be 2 or more months.
About 4 months
of TV interference
on some channels,
Is that OTA TV, cable TV, satellite TV? How many channels do you
normally see on your TV? How many of those channels show
interference? VHF, UHF, or both? Interference is rarely on more than
one channel at a time unless you have a broadband source (6MHz per
channel) that's causing the alleged interference.
OTA? The TV has an aerial with no amplifier, with
a coax cable. The assy is shown here.....
https://postimg.cc/XGG83TfM
The top set have been disconnected because they're
too high to reach, so the TV runs on the bottom
one.
mainly pixelation but sometimes
"no signal".
Pixelation can mean many things. Usually, it means a weak signal or
bit loss. Lots of possible culprits.
Worse on some channels.
Which channels?
All channels, though the lower-freq ones are
worse.
Then, up to now, the interference has stopped, all
by itself,
Are you sure you didn't do anything to make it go away? Antenna
connection? Loose shield on the RG-6/u coax cable? Nearby noise
source got turned off? I once disarmed a "negative ion generator"
that was wiping out OTA TV reception in part of an apartment building.
No. It all just stopped.
I live in town opposite a large telecommunications
building, and here's a picture of it over my back
fence.....
The cellular antennas have a very narrow vertical beamwidth. My
guess(tm) is 11 degrees vertical beamwidth on 850MHz and 6 degrees on
1900MHz. In other words, all the RF is going over your head and not
into your house. However, if you have a rooftop antenna, or live in a
multistory house that puts you into the beam, then maybe the cellular
stuff is causing a problem.
https://postimg.cc/4mPR4WfM
Note the plethora of weird aerials on its roof
which might be causing the interference on my 2006
Sony wide-screen TV.
Ah, you decided to disclose the maker and age of the TV without
bothering to supply a model number. Very good. It's a start. I
don't suppose there might be something wrong with a 13 year TV? The
transition from analog to digital TV started in 1996 and was done in
2009. So, your TV probably has an ATSC tuner. 2006 puts your TV in
the middle of the transition, which makes it difficult for me to guess
the quality of the tuner.
A good point, so next time it happens I'll put it
up into the maid's room, and buy a
newone..especially since these have greater
functionallity for movie formats.
Cellular interference to OTA TV is quite real, especially LTE in the
700MHz band. This might offer a few clues:
"Out-of-Band Interference: Myth or Reality?"
https://www.tvtechnology.com/opinions/outofband-interference-myth-or-reality
If the interference starts up again what do I do?
You walk over to the neighbors and see if they are getting the same
interference on the same channels. If yes, then find the owner of the
nearby antenna farm and unload your frustrations on their public
relations department. If no, and you have an outside antenna, try to
borrow a different TV and compare what you see on the screen. If only
your 2006 Sony has the problem, it might be time to get a better TV.
I have an el-cheapo signal-strength meter, and
this shows up to the second-top indication.
https://www.jaycar.com.au/digital-tv...meter/p/LT3332
Are there special filters for this sort of thing,
Yes, there are TV bandpass filters. However, few of these will work
with unspecified multiple channels. It might be helpful if you would
insert some numbers in your description. If you are numerically
challenged, just look for an "LTE TV Filter" such as:
https://www.techhive.com/article/3235649/tv-antenna/lte-filters-for-tv-antennas.html
https://www.channelmaster.com/TV_Antenna_LTE_Filter_p/cm-3201.htm
Mo
https://www.google.com/search?q=lte+tv+filter
and if not how should I frame a complaint?
Try an LTE filter first and see if it helps. Then find whomever owns
the antenna farm and ask them whom to contact. Most large
teleconfusion establishments have a mechanism for handling such
complaints.
Good luck.
Thank you.
I can always use a bit of luck.