Following up from Herewith

Finally had a chance to turn on the TV last night.

We connected the rooftop antenna into the cable box on the outside of the house a few weeks ago. Previously this is where Charter/Spectrum fed the entire house with signal.

Now the TV gets a some OTA channels but not all of them that it did when wired directly from the rooftop antenna previously.

What's weird is that the TV recognizes that there is a signal there--like WPTV--but it won't show any pic or audio. It does this for a great many OTA channels.

Any ideas?

Every splitter in the path will reduce the signal. You might need an amplifier on the antenna signal; the Charter/Spectrum signal may have had enough power to work through the losses, but the antenna alone may not be able to do it.

I have had this in my garage, unused, for 20 years. Will it work for OTA?

that will do to boost antenna signal.

has the tv been told to rescan its signal input since disconnecting the cable box?

might be worth doing (or redoing)


tv's newer than 2009 should be digital-capable. older ones, maybe not.

june 12, 2009 was when us tv stations had to go to digital broadcast

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=TC



Edited 1 time(s). Last edit at 10/05/2024 01:05PM by TheCaber.

First is a Pre amp at the top of the antenna. Best signal to noise is there.

How many TVS. I used the Comcast wiring for a bit but then used some imagination and ran each room back to one of these Amazon

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Staunton, Virginia

For analog signals, a mast mount pre-amp can be a big help, almost a given.

Once a threshold is reached, digital doesn't need as high of an S:N for a good signal.

Start with kit that's already there, as that may be perfectly adequate.


From the previous thread:

I live on a hill overlooking the Mississippi river.

I have an OTA antenna on my roof.

It's on a 12 foot tall pole.

Signal is not a problem.


Would that I was so lucky.

About the antenna, not the mighty Mississipp.

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I *love* SIGs. It's Glocks I hate.

Here are some pics of the antenna from a few years back when we put it up there.

I thought it was on a much taller pole.







If I run coax from the roof /antenna directly into the TV it pulls a bunch more channels.



Edited 2 time(s). Last edit at 10/05/2024 03:24PM by chopper.

There's no power up there without running an eight gazillion foot cord.

With the switch from analog to digital signals many broadcast signals got moved in the frequency bands and are now close to the cell phone bands. So if you live in an area with a number of close cell towers those signals could be overloading your TV causing reception issues. One HAM radio operator living close to me who has extensive real-world experience with antennas and signal strengths found that creating a simple band-pass filter gave him excellent results. He used a Channel Master CM-3201 and a KBFUSHI 4G/5G filter connected in series an inserted into his coax to solve his problem with reception. (Both can be found on Amazon for about $30 total.) I tried the same setup and saw only marginal improvement, but my antenna is installed in my attic. My neighbor tried the same and he reported quite a bit of improvement in his reception.

BTW, for attic installed antennas I found that placement with respect to A/C ducts has a very big impact on signals.

The Channel Master amp I posted

" It includes built-in out-of-band filters & a 4G/5G LTE interference filter. "

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Staunton, Virginia

Quote
chopper
There's no power up there without running an eight gazillion foot cord.

a quality powered amplifier will inject power via the coax.