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W26CX has an application for CH 6
- Thread starter mikl73
- Start date
Could it be............the return of...................The Pig???
If the station on channel 6 is digital, then the audio won't be listenable on an FM radio, will it? If it's analog, how long will it be before it has to go digital? I know low power stations have more time, but they're supposed to go digital eventually as well. If Flinn decides to try to use it as an FM station it may not last long.
anotherguy said:
There is currently no deadline that I know of for LPTV or Class A stations to convert to digital. It's completely voluntary.
Even if the FCC eventually sets a deadline like 2012, for example, that would give Flinn 3 good years of possible revenue if he can make it work.
That's a big ol' IF tho, ain't it? :
It's an analog application with 3kw at about 700 feet up i think.
It also appears that some of these stations have been able to get away with fm modulation and deviation levels.
TV stations are required to limit modulation levels far below broadcast fm. I think its like either 25 or 33%.
It also appears that some of these stations have been able to get away with fm modulation and deviation levels.
TV stations are required to limit modulation levels far below broadcast fm. I think its like either 25 or 33%.
Michael said:
33%. 100% modulation for a FM station is defined as +/-75KHz; for a TV station it's defined as +/-25KHz.
The way I read the rules, it's legal to run the FM stereo standard on a TV station, but it's not legal to run 300% modulation. I'm VERY surprised that NYC station is getting away with it - one has to think the competition has complained and I'm quite certain they have a point...
When a TV station on channel 6 is run as as FM radio station, do they still have some sort of video signal, even if it's just blank?
They are required to run the video carrier.
Most show show still images or a webcam. A few just have the blank carrier transmitting.
some other low power CH 6's that are pretending to be radio are:
WNYZ-LP New York, New York
KSFV-LP San Fernando, California
KESU-LP Hanamaulu, Hawaii
K06OL Antelope Valley, California
KFMD-LP Redding, California
KEFM-LP Chico, California
Most show show still images or a webcam. A few just have the blank carrier transmitting.
some other low power CH 6's that are pretending to be radio are:
WNYZ-LP New York, New York
KSFV-LP San Fernando, California
KESU-LP Hanamaulu, Hawaii
K06OL Antelope Valley, California
KFMD-LP Redding, California
KEFM-LP Chico, California
One point in all this though...
Is not the 3 kW output misleading? In analog TV, that 3 kW is the visual output; aural is significantly lower. While, if memory serves, visual to aural ratios vary, is not 10% to 20% of visual power about normal for an aural transmitter?
If that is correct, that would leave to audio portion -- the only really useful part of the signal if this is a pseudo radio station -- as a handful of a few hundred Watts, maybe as much as 10 dB down from the visual signal. And, with low deviation to boot!
(If I'm off-base, please advise. I ain't no engineer.)
Useful? I'm not sure, especially considering where the signal actually falls on a FM receiver.
I'm also wondering how well a channel 6 and an 88.5 will coexist. But, that's another question.
DE
Is not the 3 kW output misleading? In analog TV, that 3 kW is the visual output; aural is significantly lower. While, if memory serves, visual to aural ratios vary, is not 10% to 20% of visual power about normal for an aural transmitter?
If that is correct, that would leave to audio portion -- the only really useful part of the signal if this is a pseudo radio station -- as a handful of a few hundred Watts, maybe as much as 10 dB down from the visual signal. And, with low deviation to boot!
(If I'm off-base, please advise. I ain't no engineer.)
Useful? I'm not sure, especially considering where the signal actually falls on a FM receiver.
I'm also wondering how well a channel 6 and an 88.5 will coexist. But, that's another question.
DE
DeadElvis said:
You're right about the normal power levels for the aural carrier of a TV station. IIRC the limit for a full-license station is 22% of visual power - in this station's case, 660 watts.
Unfortunately I'm on the road in Minnesota & away from my rulebook... but when I looked into this with the WNYZ-LP situation in NYC, I seem to recall a loophole... which suggests **there is no limit** to the aural power for a LPTV...
(I have to think the FCC would find a way to deny a LPTV with 20,000 watts aural power, but I sure don't see that way!)
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