With all the recent discussion on digital TV channel elections and remapping, there's a question I'd like to pose that I haven't yet seen addressed. UHF Channel 37 is a "quiet" channel long reserved for radio astronomy and (later) medical telemetry on a secondary basis. With the advent of digital televison, will broadcasters be able to "map" to this channel, since this won't involve actually broadcasting a signal there? I wonder why the channel has remained on television dials for so long and hasn't been removed, as was channel 1. Since even broadcast channel numbers are basically arbitrary (unlike AM and FM where they actually represent a wavelength), I'm guessing the astronomy reservation came after the band was allocated for TV, or the FCC could have just skipped that range of frequencies and placed the channel #37 designation on the frequency range now occupied by channel 38, 38 on the range that's now 39, and so on the same way up the dial, similar to the electronic "gaps" between VHF channels 4 and 5, and 6 and 7.
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UHF Channel 37
- Thread starter RadioDaze
- Start date
> With all the recent discussion on digital TV channel
> elections and remapping, there's a question I'd like to pose
> that I haven't yet seen addressed. UHF Channel 37 is a
> "quiet" channel long reserved for radio astronomy and
> (later) medical telemetry on a secondary basis. With the
> advent of digital televison, will broadcasters be able to
> "map" to this channel, since this won't involve actually
> broadcasting a signal there? I wonder why the channel has
> remained on television dials for so long and hasn't been
> removed, as was channel 1. Since even broadcast channel
> numbers are basically arbitrary (unlike AM and FM where they
> actually represent a wavelength), I'm guessing the astronomy
> reservation came after the band was allocated for TV, or the
> FCC could have just skipped that range of frequencies and
> placed the channel #37 designation on the frequency range
> now occupied by channel 38, 38 on the range that's now 39,
> and so on the same way up the dial, similar to the
> electronic "gaps" between VHF channels 4 and 5, and 6 and 7.
>
The FCC prohibited the use of channel 37 nationwide after January 1, 1974.
The cover story is that it was being reserved for radio astronomy purposes, but most everyone knows that it is the CIA surveilence and espionage channel.
Just kidding...
Hydrogen is the most abundant element in the universe. Making up about 85% of the atoms. So it is logical to assume any such civilization that would be looking to send a signal of "See us, we are here," would use this.
The resonant frequency of the hydrogen atom is somewhere within channel 37.
Radio astronomy folks started complaining about interference with interstellar radio signals and got the ITU to rule channel 37 off limits.
So by the time this came into being it was too much trouble to renumber the dial.
Yes you could map to channel 37. Some stations were mapping to Channel 1. Heck I even had a cable company that had a cable channel zero.
For more info see <a target="_blank" href=http://www.tvtechnology.com/features/news/n_the_last_empty_channel.shtml>The Last Empty Channel</a>
> elections and remapping, there's a question I'd like to pose
> that I haven't yet seen addressed. UHF Channel 37 is a
> "quiet" channel long reserved for radio astronomy and
> (later) medical telemetry on a secondary basis. With the
> advent of digital televison, will broadcasters be able to
> "map" to this channel, since this won't involve actually
> broadcasting a signal there? I wonder why the channel has
> remained on television dials for so long and hasn't been
> removed, as was channel 1. Since even broadcast channel
> numbers are basically arbitrary (unlike AM and FM where they
> actually represent a wavelength), I'm guessing the astronomy
> reservation came after the band was allocated for TV, or the
> FCC could have just skipped that range of frequencies and
> placed the channel #37 designation on the frequency range
> now occupied by channel 38, 38 on the range that's now 39,
> and so on the same way up the dial, similar to the
> electronic "gaps" between VHF channels 4 and 5, and 6 and 7.
>
The FCC prohibited the use of channel 37 nationwide after January 1, 1974.
The cover story is that it was being reserved for radio astronomy purposes, but most everyone knows that it is the CIA surveilence and espionage channel.
Just kidding...
Hydrogen is the most abundant element in the universe. Making up about 85% of the atoms. So it is logical to assume any such civilization that would be looking to send a signal of "See us, we are here," would use this.
The resonant frequency of the hydrogen atom is somewhere within channel 37.
Radio astronomy folks started complaining about interference with interstellar radio signals and got the ITU to rule channel 37 off limits.
So by the time this came into being it was too much trouble to renumber the dial.
Yes you could map to channel 37. Some stations were mapping to Channel 1. Heck I even had a cable company that had a cable channel zero.
For more info see <a target="_blank" href=http://www.tvtechnology.com/features/news/n_the_last_empty_channel.shtml>The Last Empty Channel</a>
> > With all the recent discussion on digital TV channel
> > elections and remapping, there's a question I'd like to
> pose
> > that I haven't yet seen addressed. UHF Channel 37 is a
> > "quiet" channel long reserved for radio astronomy and
> > (later) medical telemetry on a secondary basis. With the
> > advent of digital televison, will broadcasters be able to
> > "map" to this channel, since this won't involve actually
> > broadcasting a signal there? I wonder why the channel has
>
> > remained on television dials for so long and hasn't been
> > removed, as was channel 1. Since even broadcast channel
> > numbers are basically arbitrary (unlike AM and FM where
> they
> > actually represent a wavelength), I'm guessing the
> astronomy
> > reservation came after the band was allocated for TV, or
> the
> > FCC could have just skipped that range of frequencies and
> > placed the channel #37 designation on the frequency range
> > now occupied by channel 38, 38 on the range that's now 39,
>
> > and so on the same way up the dial, similar to the
> > electronic "gaps" between VHF channels 4 and 5, and 6 and
> 7.
> >
> The FCC prohibited the use of channel 37 nationwide after
> January 1, 1974.
>
> The cover story is that it was being reserved for radio
> astronomy purposes, but most everyone knows that it is the
> CIA surveilence and espionage channel.
>
> Just kidding...
>
> Hydrogen is the most abundant element in the universe.
> Making up about 85% of the atoms. So it is logical to assume
> any such civilization that would be looking to send a signal
> of "See us, we are here," would use this.
>
> The resonant frequency of the hydrogen atom is somewhere
> within channel 37.
>
> Radio astronomy folks started complaining about interference
> with interstellar radio signals and got the ITU to rule
> channel 37 off limits.
>
> So by the time this came into being it was too much trouble
> to renumber the dial.
>
> Yes you could map to channel 37. Some stations were mapping
> to Channel 1. Heck I even had a cable company that had a
> cable channel zero.
Do you happen to know what frequency they used for channel zero?
Since broadcast channel 37 is cable channel 88 on most analog systems, are cable companies allowed to use 88? I've never seen one that did, but that could be because cable channels 65-94 and 100-116(the UHF broadcast channels) aren't generally used anyway.
>
> For more info see The Last Empty Channel
>
> > elections and remapping, there's a question I'd like to
> pose
> > that I haven't yet seen addressed. UHF Channel 37 is a
> > "quiet" channel long reserved for radio astronomy and
> > (later) medical telemetry on a secondary basis. With the
> > advent of digital televison, will broadcasters be able to
> > "map" to this channel, since this won't involve actually
> > broadcasting a signal there? I wonder why the channel has
>
> > remained on television dials for so long and hasn't been
> > removed, as was channel 1. Since even broadcast channel
> > numbers are basically arbitrary (unlike AM and FM where
> they
> > actually represent a wavelength), I'm guessing the
> astronomy
> > reservation came after the band was allocated for TV, or
> the
> > FCC could have just skipped that range of frequencies and
> > placed the channel #37 designation on the frequency range
> > now occupied by channel 38, 38 on the range that's now 39,
>
> > and so on the same way up the dial, similar to the
> > electronic "gaps" between VHF channels 4 and 5, and 6 and
> 7.
> >
> The FCC prohibited the use of channel 37 nationwide after
> January 1, 1974.
>
> The cover story is that it was being reserved for radio
> astronomy purposes, but most everyone knows that it is the
> CIA surveilence and espionage channel.
>
> Just kidding...
>
> Hydrogen is the most abundant element in the universe.
> Making up about 85% of the atoms. So it is logical to assume
> any such civilization that would be looking to send a signal
> of "See us, we are here," would use this.
>
> The resonant frequency of the hydrogen atom is somewhere
> within channel 37.
>
> Radio astronomy folks started complaining about interference
> with interstellar radio signals and got the ITU to rule
> channel 37 off limits.
>
> So by the time this came into being it was too much trouble
> to renumber the dial.
>
> Yes you could map to channel 37. Some stations were mapping
> to Channel 1. Heck I even had a cable company that had a
> cable channel zero.
Do you happen to know what frequency they used for channel zero?
Since broadcast channel 37 is cable channel 88 on most analog systems, are cable companies allowed to use 88? I've never seen one that did, but that could be because cable channels 65-94 and 100-116(the UHF broadcast channels) aren't generally used anyway.
>
> For more info see The Last Empty Channel
>
> Do you happen to know what frequency they used for channel
> zero?
>
> Since broadcast channel 37 is cable channel 88 on most
> analog systems, are cable companies allowed to use 88? I've
> never seen one that did, but that could be because cable
> channels 65-94 and 100-116(the UHF broadcast channels)
> aren't generally used anyway.
Sorry I don't know. It was the TV programming guide. Before there was a "TV Guide Channel." So I think it was in the late 80s.
I did find this on a Usenet Post though:
"Channel 41 and 42 can only be used by cable systems that can insure that their signal will not leak. Channel 41 and 42 are on the same frequency as aviation. Cable 88 has the same rules as 41 and 42 because that frequency is reserved for radio astronomy. Cable 88 and UHF 37 is approx the same frequency. This means that no channels are assigned to channel 37 in North America.
There is no such frequency as channel 0, however you will come accross cable systems that have channels mapped to 0 (notibly in the US). Like digital cable boxes, certain analog boxes can mapped to tune a channel other than what was intended to be tuned on a specific channel number.
__________________<P ID="signature">______________
Once I figured out the meaning of life....Then I forgot to write it down.</P>
> zero?
>
> Since broadcast channel 37 is cable channel 88 on most
> analog systems, are cable companies allowed to use 88? I've
> never seen one that did, but that could be because cable
> channels 65-94 and 100-116(the UHF broadcast channels)
> aren't generally used anyway.
Sorry I don't know. It was the TV programming guide. Before there was a "TV Guide Channel." So I think it was in the late 80s.
I did find this on a Usenet Post though:
"Channel 41 and 42 can only be used by cable systems that can insure that their signal will not leak. Channel 41 and 42 are on the same frequency as aviation. Cable 88 has the same rules as 41 and 42 because that frequency is reserved for radio astronomy. Cable 88 and UHF 37 is approx the same frequency. This means that no channels are assigned to channel 37 in North America.
There is no such frequency as channel 0, however you will come accross cable systems that have channels mapped to 0 (notibly in the US). Like digital cable boxes, certain analog boxes can mapped to tune a channel other than what was intended to be tuned on a specific channel number.
__________________<P ID="signature">______________
Once I figured out the meaning of life....Then I forgot to write it down.</P>
> > Do you happen to know what frequency they used for channel
>
> > zero?
> >
> > Since broadcast channel 37 is cable channel 88 on most
> > analog systems, are cable companies allowed to use 88?
> I've
> > never seen one that did, but that could be because cable
> > channels 65-94 and 100-116(the UHF broadcast channels)
> > aren't generally used anyway.
>
> Sorry I don't know. It was the TV programming guide. Before
> there was a "TV Guide Channel." So I think it was in the
> late 80s.
>
> I did find this on a Usenet Post though:
>
> "Channel 41 and 42 can only be used by cable systems that
> can insure that their signal will not leak. Channel 41 and
> 42 are on the same frequency as aviation. Cable 88 has the
> same rules as 41 and 42 because that frequency is reserved
> for radio astronomy. Cable 88 and UHF 37 is approx the same
> frequency. This means that no channels are assigned to
> channel 37 in North America.
>
> There is no such frequency as channel 0, however you will
> come accross cable systems that have channels mapped to 0
> (notibly in the US). Like digital cable boxes, certain
> analog boxes can mapped to tune a channel other than what
> was intended to be tuned on a specific channel number.
> __________________
>
Wouldn't 14, 15, and 16 also have these rules? Since I live right under a commercial and military flightpath, I often get interference from aircraft on those channels (here, FSN-South, USA, and FNC). I've never had it happen on 41 or 42.
>
> > zero?
> >
> > Since broadcast channel 37 is cable channel 88 on most
> > analog systems, are cable companies allowed to use 88?
> I've
> > never seen one that did, but that could be because cable
> > channels 65-94 and 100-116(the UHF broadcast channels)
> > aren't generally used anyway.
>
> Sorry I don't know. It was the TV programming guide. Before
> there was a "TV Guide Channel." So I think it was in the
> late 80s.
>
> I did find this on a Usenet Post though:
>
> "Channel 41 and 42 can only be used by cable systems that
> can insure that their signal will not leak. Channel 41 and
> 42 are on the same frequency as aviation. Cable 88 has the
> same rules as 41 and 42 because that frequency is reserved
> for radio astronomy. Cable 88 and UHF 37 is approx the same
> frequency. This means that no channels are assigned to
> channel 37 in North America.
>
> There is no such frequency as channel 0, however you will
> come accross cable systems that have channels mapped to 0
> (notibly in the US). Like digital cable boxes, certain
> analog boxes can mapped to tune a channel other than what
> was intended to be tuned on a specific channel number.
> __________________
>
Wouldn't 14, 15, and 16 also have these rules? Since I live right under a commercial and military flightpath, I often get interference from aircraft on those channels (here, FSN-South, USA, and FNC). I've never had it happen on 41 or 42.
C
ccmfan
Guest
> > cable channels 65-94 (the UHF broadcast channels)
> > aren't generally used anyway.
>
>
> Actually, the Bright House system in Tampa Bay has analog in
> use that goes up to ch.80. And I've experience many cable
> systems in my travels with line-ups that go into the 70s, at
> least.
>
My cable service comes from Charter in Jackson, TN and they have channels from 65 to 78 with the exceptions of 70 and 75, probably because of not wanting interference from area UHF stations. (Would I be correct in assuming this?) 70 would be the same as 19 on UHF and there is an LPTV station on 19 in Jackson. 75 would be the same as 24 on UHF, which is WPTY in Memphis.
Oddly though, I live only about 2 miles from the tower for WJKT 16 in Jackson, and Charter has Turner South on 67, and 16's OTA signal bleeds into the picture at times on certain sets. I don't know why Charter would leave 70 and 75 unused but not 67 if the reason is because of not wanting interference from UHF stations.
> > aren't generally used anyway.
>
>
> Actually, the Bright House system in Tampa Bay has analog in
> use that goes up to ch.80. And I've experience many cable
> systems in my travels with line-ups that go into the 70s, at
> least.
>
My cable service comes from Charter in Jackson, TN and they have channels from 65 to 78 with the exceptions of 70 and 75, probably because of not wanting interference from area UHF stations. (Would I be correct in assuming this?) 70 would be the same as 19 on UHF and there is an LPTV station on 19 in Jackson. 75 would be the same as 24 on UHF, which is WPTY in Memphis.
Oddly though, I live only about 2 miles from the tower for WJKT 16 in Jackson, and Charter has Turner South on 67, and 16's OTA signal bleeds into the picture at times on certain sets. I don't know why Charter would leave 70 and 75 unused but not 67 if the reason is because of not wanting interference from UHF stations.
JeeperOne
Banned
Hi everyone:
> Yes you could map to channel 37. Some stations were mapping
> to Channel 1. Heck I even had a cable company that had a
> cable channel zero.
Here in Denver, Comcast Cable uses cable channel 1 for its "On Demand" service.
Cheers for now <P ID="signature">______________
http://patspodcast.blogspot.com/
Radio? Uhh.....What's THAT??</P>
> Yes you could map to channel 37. Some stations were mapping
> to Channel 1. Heck I even had a cable company that had a
> cable channel zero.
Here in Denver, Comcast Cable uses cable channel 1 for its "On Demand" service.
Cheers for now
<P ID="signature">______________
http://patspodcast.blogspot.com/
Radio? Uhh.....What's THAT??
</P>> With all the recent discussion on digital TV channel
> elections and remapping, there's a question I'd like to pose
> that I haven't yet seen addressed. UHF Channel 37 is a
> "quiet" channel long reserved for radio astronomy and
> (later) medical telemetry on a secondary basis. With the
> advent of digital televison, will broadcasters be able to
> "map" to this channel, since this won't involve actually
> broadcasting a signal there?
Sure, stations can use any number that they want and don't actually have to be broadcasting on a certain channel. Actually I think the so called "channels" we know today and how they are assigned to each frequencies in the VHF and UHF band will most likely be phased out. They basically are just frequencies that provide a signal. Your TV doesn't care what channel it is, just a RF tuner that can receive a signal.
With DTV however, TV stations will be allowed to suddenly make frequency changes if and when the FCC demands it. However YOU WILL NOT notice it since your TV tuner scanning, for instances Channel 4-1. Currently WTMJ-DT is on UHF ch. 28 which I don't know the exact UHF frequency for ch. 28. But should they change frequency to ch. 20, you won't notice it but channel 4-1 will always transmit a mapping signal to indicate 4-1. So if they change frequency overnight, the next time you turn on your TV it will still find and receive 4-1 and you will not have any notice that they actually changed to another frequency.
-John L.
> elections and remapping, there's a question I'd like to pose
> that I haven't yet seen addressed. UHF Channel 37 is a
> "quiet" channel long reserved for radio astronomy and
> (later) medical telemetry on a secondary basis. With the
> advent of digital televison, will broadcasters be able to
> "map" to this channel, since this won't involve actually
> broadcasting a signal there?
Sure, stations can use any number that they want and don't actually have to be broadcasting on a certain channel. Actually I think the so called "channels" we know today and how they are assigned to each frequencies in the VHF and UHF band will most likely be phased out. They basically are just frequencies that provide a signal. Your TV doesn't care what channel it is, just a RF tuner that can receive a signal.
With DTV however, TV stations will be allowed to suddenly make frequency changes if and when the FCC demands it. However YOU WILL NOT notice it since your TV tuner scanning, for instances Channel 4-1. Currently WTMJ-DT is on UHF ch. 28 which I don't know the exact UHF frequency for ch. 28. But should they change frequency to ch. 20, you won't notice it but channel 4-1 will always transmit a mapping signal to indicate 4-1. So if they change frequency overnight, the next time you turn on your TV it will still find and receive 4-1 and you will not have any notice that they actually changed to another frequency.
-John L.
M
Mark_Ericson
Guest
> With DTV however, TV stations will be allowed to suddenly
> make frequency changes if and when the FCC demands it.
> However YOU WILL NOT notice it since your TV tuner scanning,
> for instances Channel 4-1. Currently WTMJ-DT is on UHF ch.
> 28 which I don't know the exact UHF frequency for ch. 28.
> But should they change frequency to ch. 20, you won't notice
> it but channel 4-1 will always transmit a mapping signal to
> indicate 4-1. So if they change frequency overnight, the
> next time you turn on your TV it will still find and receive
> 4-1 and you will not have any notice that they actually
> changed to another frequency.
How would the box know that 28.3 has moved to 20.3 to continue the remapping to 4-1? While the 4-1 mapping could change with little or no user intervention, the physical channel number couldn't.
- Trip<P ID="signature">______________
Visit my website, www.rabbitears.info! It's eventually going to be your one resource for television info! Digital television, histories, and technical information for the entire USA from one source!</P>
> make frequency changes if and when the FCC demands it.
> However YOU WILL NOT notice it since your TV tuner scanning,
> for instances Channel 4-1. Currently WTMJ-DT is on UHF ch.
> 28 which I don't know the exact UHF frequency for ch. 28.
> But should they change frequency to ch. 20, you won't notice
> it but channel 4-1 will always transmit a mapping signal to
> indicate 4-1. So if they change frequency overnight, the
> next time you turn on your TV it will still find and receive
> 4-1 and you will not have any notice that they actually
> changed to another frequency.
How would the box know that 28.3 has moved to 20.3 to continue the remapping to 4-1? While the 4-1 mapping could change with little or no user intervention, the physical channel number couldn't.
- Trip<P ID="signature">______________
Visit my website, www.rabbitears.info! It's eventually going to be your one resource for television info! Digital television, histories, and technical information for the entire USA from one source!</P>
T
toby
Guest
> Hi everyone:
>
> > Yes you could map to channel 37. Some stations were
> mapping
> > to Channel 1. Heck I even had a cable company that had a
> > cable channel zero.
>
> Here in Denver, Comcast Cable uses cable channel 1 for its
> "On Demand" service.
In NYC on Time Warner Cable, Channel 1 is NY1, which is a local all news cable network.<P ID="signature">______________
WCBS = We're Crazy Buffoons and Schmucks
<a href=http://chuck.spotteddogs.org/tv/>Spotted Dog TV Talk - for all your non-news TV Talk</a></P>
>
> > Yes you could map to channel 37. Some stations were
> mapping
> > to Channel 1. Heck I even had a cable company that had a
> > cable channel zero.
>
> Here in Denver, Comcast Cable uses cable channel 1 for its
> "On Demand" service.
In NYC on Time Warner Cable, Channel 1 is NY1, which is a local all news cable network.<P ID="signature">______________
WCBS = We're Crazy Buffoons and Schmucks
<a href=http://chuck.spotteddogs.org/tv/>Spotted Dog TV Talk - for all your non-news TV Talk</a></P>
K
KMRichards
Guest
> > Here in Denver, Comcast Cable uses cable channel 1 for its
>
> > "On Demand" service.
>
> In NYC on Time Warner Cable, Channel 1 is NY1, which is a
> local all news cable network.
None of this has anything to do with the original question.<P ID="signature">______________
</P>
>
> > "On Demand" service.
>
> In NYC on Time Warner Cable, Channel 1 is NY1, which is a
> local all news cable network.
None of this has anything to do with the original question.<P ID="signature">______________
</P>
> > With DTV however, TV stations will be allowed to suddenly
> > make frequency changes if and when the FCC demands it.
> > However YOU WILL NOT notice it since your TV tuner
> scanning,
> > for instances Channel 4-1. Currently WTMJ-DT is on UHF
> ch.
> > 28 which I don't know the exact UHF frequency for ch. 28.
>
> > But should they change frequency to ch. 20, you won't
> notice
> > it but channel 4-1 will always transmit a mapping signal
> to
> > indicate 4-1. So if they change frequency overnight, the
> > next time you turn on your TV it will still find and
> receive
> > 4-1 and you will not have any notice that they actually
> > changed to another frequency.
>
> How would the box know that 28.3 has moved to 20.3 to
> continue the remapping to 4-1? While the 4-1 mapping could
> change with little or no user intervention, the physical
> channel number couldn't.
>
> - Trip
Doesn't your box scan each time you turn it on? Mine seems to do so.
The TV station is the one that transmits the mapping channel.
-John L.
> > make frequency changes if and when the FCC demands it.
> > However YOU WILL NOT notice it since your TV tuner
> scanning,
> > for instances Channel 4-1. Currently WTMJ-DT is on UHF
> ch.
> > 28 which I don't know the exact UHF frequency for ch. 28.
>
> > But should they change frequency to ch. 20, you won't
> notice
> > it but channel 4-1 will always transmit a mapping signal
> to
> > indicate 4-1. So if they change frequency overnight, the
> > next time you turn on your TV it will still find and
> receive
> > 4-1 and you will not have any notice that they actually
> > changed to another frequency.
>
> How would the box know that 28.3 has moved to 20.3 to
> continue the remapping to 4-1? While the 4-1 mapping could
> change with little or no user intervention, the physical
> channel number couldn't.
>
> - Trip
Doesn't your box scan each time you turn it on? Mine seems to do so.
The TV station is the one that transmits the mapping channel.
-John L.
M
Mark_Ericson
Guest
> > How would the box know that 28.3 has moved to 20.3 to
> > continue the remapping to 4-1? While the 4-1 mapping
> could
> > change with little or no user intervention, the physical
> > channel number couldn't.
> >
> > - Trip
>
> Doesn't your box scan each time you turn it on? Mine seems
> to do so.
>
> The TV station is the one that transmits the mapping
> channel.
It must take like 5 minutes to turn your box on then. Mine keeps in its memory what physical channels there are, like it knows that 7-1 was channel 18.3, and then when I tune to 7-1 it checks to see what's there, but if it suddenly moved to channel 7.3, the tuner would still be looking for channel 18.3.
- Trip<P ID="signature">______________
Visit my website, www.rabbitears.info! It's eventually going to be your one resource for television info! Digital television, histories, and technical information for the entire USA from one source!</P>
> > continue the remapping to 4-1? While the 4-1 mapping
> could
> > change with little or no user intervention, the physical
> > channel number couldn't.
> >
> > - Trip
>
> Doesn't your box scan each time you turn it on? Mine seems
> to do so.
>
> The TV station is the one that transmits the mapping
> channel.
It must take like 5 minutes to turn your box on then. Mine keeps in its memory what physical channels there are, like it knows that 7-1 was channel 18.3, and then when I tune to 7-1 it checks to see what's there, but if it suddenly moved to channel 7.3, the tuner would still be looking for channel 18.3.
- Trip<P ID="signature">______________
Visit my website, www.rabbitears.info! It's eventually going to be your one resource for television info! Digital television, histories, and technical information for the entire USA from one source!</P>
>
> It must take like 5 minutes to turn your box on then. Mine
> keeps in its memory what physical channels there are, like
> it knows that 7-1 was channel 18.3, and then when I tune to
> 7-1 it checks to see what's there, but if it suddenly moved
> to channel 7.3, the tuner would still be looking for channel
> 18.3.
>
> - Trip
>
Mine is the same way, the only way I can tell that it would think to look for a new position for a channel is if I tell it to do a new or re-scan.
> It must take like 5 minutes to turn your box on then. Mine
> keeps in its memory what physical channels there are, like
> it knows that 7-1 was channel 18.3, and then when I tune to
> 7-1 it checks to see what's there, but if it suddenly moved
> to channel 7.3, the tuner would still be looking for channel
> 18.3.
>
> - Trip
>
Mine is the same way, the only way I can tell that it would think to look for a new position for a channel is if I tell it to do a new or re-scan.
> >
> > It must take like 5 minutes to turn your box on then.
> Mine
> > keeps in its memory what physical channels there are, like
>
> > it knows that 7-1 was channel 18.3, and then when I tune
> to
> > 7-1 it checks to see what's there, but if it suddenly
> moved
> > to channel 7.3, the tuner would still be looking for
> channel
> > 18.3.
> >
> > - Trip
> >
>
>
> Mine is the same way, the only way I can tell that it would
> think to look for a new position for a channel is if I tell
> it to do a new or re-scan.
>
I have seen this before on posts to usenet and I would think most tuners operate that way. One of the complaints I consistantly see, is some brands of tuners lose stations regularly and you have to rescan every time. The topic was brought up and it was "is it the station or the tuner's fault?"
Since not all digital tuners (the newer ones correct previous bugs) are the same, it's hard to tell. I know in Chicago certain stations like WGBO Channel 66 seem to have enourmous issues with PSIP mapping.
<P ID="signature">______________
Once I figured out the meaning of life....Then I forgot to write it down.</P>
> > It must take like 5 minutes to turn your box on then.
> Mine
> > keeps in its memory what physical channels there are, like
>
> > it knows that 7-1 was channel 18.3, and then when I tune
> to
> > 7-1 it checks to see what's there, but if it suddenly
> moved
> > to channel 7.3, the tuner would still be looking for
> channel
> > 18.3.
> >
> > - Trip
> >
>
>
> Mine is the same way, the only way I can tell that it would
> think to look for a new position for a channel is if I tell
> it to do a new or re-scan.
>
I have seen this before on posts to usenet and I would think most tuners operate that way. One of the complaints I consistantly see, is some brands of tuners lose stations regularly and you have to rescan every time. The topic was brought up and it was "is it the station or the tuner's fault?"
Since not all digital tuners (the newer ones correct previous bugs) are the same, it's hard to tell. I know in Chicago certain stations like WGBO Channel 66 seem to have enourmous issues with PSIP mapping.
<P ID="signature">______________
Once I figured out the meaning of life....Then I forgot to write it down.</P>
- Status