Unknown Audio in the VHF Band

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ecps92

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But they are on a different Frequency, so No a TV Station [Channel] only has One Site and if designed properly a Back-up
for the O-$h!t events or to run from when the master site needs maintenance [Power Off]
Actually TV stations do have multiple translators to augment their signals in areas shown to have poor reception after the digital transition.
 

W1KNE

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So there are two different repeaters used by television, often in more rural areas.

Translators, which repeat the station on a *different* channel. These were all required to go digital or go dark at the end of June.
Translator networks are big out west, where the tall mountains and distance between cities can cause issues. (Now, some of these translators, if far enough away, can be on the main channel, but that's extremley rare)

On Channel Boosters, known in our industry as "SFN"(Single Frequency Networks) are becoming more and more common. This is where a TV station uses multiple transmitter locations to improve the coverage in favorable parts of the market where the primary signal isn't seen with good quality. WEDW-TV , the PBS station in Stamford, CT, is running a 3 site SFN. One on their original (Hi-Ho) tower, and two with different patterns in New York City. The modern transmitter exciters can be setup to all be GPS frequency locked and set so the carriers are delayed to be "in time" with the signal as well, so a person could see both signals and not ever know it. And these are full power duplicates of the main signal, they are not restricted in power like translators are.

So the correct answer is "yes" .

Now to the OPs question. Channel 7.
In North Carolina, there are three, ATSC (not analog, no analog audio either) translators
WHFL-CD (Technically a class "A" signal)
W07DS-D and W07DT-D, both run by Hearst's WYFF-TV

In South Carolina
WOLO-TV is on channel 7, also in ATSC, and also with no analog audio.

I will contend, he's either hearing a rogue wireless mic, a spur off of a failing transmitter/station, or a pirate who has no idea what they are doing.
 

ecps92

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We learn something new everyday !
Thanks Mike
So there are two different repeaters used by television, often in more rural areas.

Translators, which repeat the station on a *different* channel. These were all required to go digital or go dark at the end of June.
Translator networks are big out west, where the tall mountains and distance between cities can cause issues. (Now, some of these translators, if far enough away, can be on the main channel, but that's extremley rare)

On Channel Boosters, known in our industry as "SFN"(Single Frequency Networks) are becoming more and more common. This is where a TV station uses multiple transmitter locations to improve the coverage in favorable parts of the market where the primary signal isn't seen with good quality. WEDW-TV , the PBS station in Stamford, CT, is running a 3 site SFN. One on their original (Hi-Ho) tower, and two with different patterns in New York City. The modern transmitter exciters can be setup to all be GPS frequency locked and set so the carriers are delayed to be "in time" with the signal as well, so a person could see both signals and not ever know it. And these are full power duplicates of the main signal, they are not restricted in power like translators are.

So the correct answer is "yes" .

Now to the OPs question. Channel 7.
In North Carolina, there are three, ATSC (not analog, no analog audio either) translators
WHFL-CD (Technically a class "A" signal)
W07DS-D and W07DT-D, both run by Hearst's WYFF-TV

In South Carolina
WOLO-TV is on channel 7, also in ATSC, and also with no analog audio.

I will contend, he's either hearing a rogue wireless mic, a spur off of a failing transmitter/station, or a pirate who has no idea what they are doing.
 

mass-man

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Not a wireless mic...both voices were equal clarity. On a wireless mic one of them would be "off mic."
I think its VHF skip...with the fade and total signal dropout. TV or radio station IFB transmitter somewhere. In NYC and DC, the stations use VHF IFB systems with the antennas at some elevation for good citywide coverage!
 

W1KNE

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Not a wireless mic...both voices were equal clarity. On a wireless mic one of them would be "off mic."
I think its VHF skip...with the fade and total signal dropout. TV or radio station IFB transmitter somewhere. In NYC and DC, the stations use VHF IFB systems with the antennas at some elevation for good citywide coverage!
Not NYC or DC, both have ATSC channel 7 being used there.

174 Mhz is only limited to low power IFB use only, anyways.

Analog skip is very possible, but until the OP says what he hears for any IDs , it's all just guessing now
 

jake_Braker

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Analog skip is very possible, but until the OP says what he hears for any IDs , it's all just guessing now

I forgot to set my scanner up before i left for work this morning. I'll set it up tonight and let it run until I get home tomorrow evening!
I'm not leaving y'all hanging!
 

jake_Braker

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So I've gone though the audio that @W1KNE mentioned in this post
Scan from 161-162, 450-451, and 455-456 and see if you hear the same audio.
and there was nothing besides a couple of NXDN systems (I appreciate your suggestion so now I'm going to follow those) so I'm not sure where else to go.
 

mass-man

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Do you know anyone who speaks Spanish? Interpreting to English is gonna be your best be to getting to the bottom of this!!!
 

mass-man

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Not NYC or DC, both have ATSC channel 7 being used there.

174 Mhz is only limited to low power IFB use only, anyways.

Analog skip is very possible, but until the OP says what he hears for any IDs , it's all just guessing now
Yes low power use, but if the antenna is high enuf it can have quite the range...we could get the CBS IFB all over DC when I worked up there...I'm not so sure the transmitters weren't more than the 50mw allowed today!
 

jake_Braker

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And here's what he said

"They're two radio hosts talking about soccer and who's better between Real Madrid or Liverpool 😂"
 

jake_Braker

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I'm thinking it could be an issue with tropospheric ducting. I've ran the frequency since my message last night and i have nothing to show for it. All I have is a bit of static
 

jonsmth

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I Looked at the FCC's website and found that there is a Channel 7 in Columbia SC (WOLO). Their 36dbu curve is just to the South-East of
Gastonia. The FCC database listed their bandwidth as 174mhz - 180mhz. I also noted that a LPTV station on Channel 7 is also
located in Tryon NC (WOLS) but their signal doesn't get anywhere near Gastonia.
 

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