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Conference 7.286::cable_tv

Title:Cable TV
Notice:welcome to the Cable TV notes file
Moderator:NETRIX::thomas
Created:Thu Apr 16 1987
Last Modified:Wed Apr 30 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:453
Total number of notes:3135

452.0. "Cable box to TV directly" by FUNYET::ANDERSON (Where's the nearest White Castle?) Tue Feb 18 1997 10:56

I live in Watertown MA and Continental Cablevision has just revamped the channel
lineup.  Before, I rarely used the cable box because most channels I watched
were unscrambled and on channels my cable-ready TV could receive directly.

Now they've put some channels I usually watch on channels above where my TV set
can go.  WHDH Boston, channel 7, is now on cable channel 58 and my set doesn't
go that high.  So now I need to use the cable box much more often, which
involves choosing "TV" on the TV set instead of "cable" and turning on the cable
box.  It's a little less convenient, but I'd live with it.

The real problem is that the signals from the cable box remote control interfere
with those used by the TV set.  Selecting channels with the cable box remote
causes the TV set to channel surf all by itself, so you have to press channel 3
on the TV set remote to get it to stop.

Is there such a thing as a cable box that does not output to TV channel 3/4 but
rather directly to the TV set's video/audio in jacks?  This would eliminate the
interference between remote controls and also eliminate the extra step of going
through the TV tuner.

Paul
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452.1VAXCPU::michaudJeff Michaud - ObjectBrokerTue Feb 18 1997 11:396
	I don't know if what you are looking for exists, but
	I know what does exist and I've used in the past when
	I had a TV that wasn't cable ready, was a box that
	frequency shifted all the cable channels above 13 to
	UHF frequencies.  At the time these boxes costs like
	$10 to $15 (this is going back 10 years or so).
452.2METALX::SWANSONVictim of ChangesTue Feb 18 1997 12:0322
    Paul,
    
    If such a device existed to output the cable box onto video instead
    of RF, it still might not solve your problem.  If your TV is changing
    channels when you change channels on your cable box, then it will still
    change channels even with the device hooked up (provided you are using
    the same cable box), and it might very well switch to RF input if
    this happened.  Try it and see... switch your TV to video-in and then
    hit the TV's channel up button and see if it switches to RF-in.
    
    What I would try for a fix is:  Unprogram all channels on your TV
    except channel 3.  That way, if it tries to switch channels, it'll only
    change to channel 3 again!
    
    Or, you could call the cable company and see if they have a slightly
    different model cable box that doesn't conflict with your TV.
    
    BTW, you shouldn't have to set your TV to "TV".  TV channel 3 is the
    same as cable channel 3.
    
    Ken
    
452.3This is a 1984-era ProtonFUNYET::ANDERSONWhere's the nearest White Castle?Tue Feb 18 1997 15:3839
> If your TV is changing channels when you change channels on your cable box,
> then it will still change channels even with the device hooked up (provided
> you are using the same cable box), and it might very well switch to RF input
> if this happened.

If I hooked a cable box directly to the TV's video/audio in jacks, I would use
the AUX button on the TV's front panel, and there's no channel selection on the
TV then.  The channel number goes out and the stray signal from the cable box
remote are ignored by the TV.

I have four choices on the front of the TV:

	TV	coax antenna input, currently from cable box
	CABLE	coax antenna input, currently direct from cable
	VCR	direct video/audio input, currently VCR
	AUX	direct video/audio input, currently unused, formerly Beta VCR

> Unprogram all channels on your TV except channel 3.  That way, if it tries to
> switch channels, it'll only change to channel 3 again!

There's no ability to program channels on this set.
    
> Or, you could call the cable company and see if they have a slightly
> different model cable box that doesn't conflict with your TV.

When this version of the cable box first came out, over a year ago, I returned
the first one but the second one exhibits the same symptom.  Continental
Cablevision said they didn't have a version that connected to video/audio-in
jacks.
    
> BTW, you shouldn't have to set your TV to "TV".  TV channel 3 is the same as
> cable channel 3.

Right, but as noted above, the cable box is connected to the TV input.  I could
connect it to the CABLE input, but I expect the TV would still flip channels,
since the signal to search to the next channel is the same whether the TV is
set to TV or CABLE.

Paul
452.4WRKSYS::INGRAHAMAndyTue Feb 18 1997 17:187
Don't know if it helps ... but have you tried tuning your TV to channels
01, 00, 99, 98, or 97?  There's a little chance that it maps a few of the
channels (which your cable box gets as 60 or thereabouts) to those channel
numbers.

Do you have a VCR?  If you do, you might run ITS video/audio outputs into
your TV.
452.5Isn't this fun?FUNYET::ANDERSONWhere's the nearest White Castle?Tue Feb 18 1997 17:5123
> but have you tried tuning your TV to channels 01, 00, 99, 98, or 97?

Channel 1 works, but not 0, and nothing between 57 and 99.

> Do you have a VCR?  If you do, you might run ITS video/audio outputs into
> your TV.

The cable box is also connected to the VCR, so I could use the cable box remote
to change channels as long as the VCR was set to channel 3 and the TV set to
VCR.

I thought most TVs these days had direct video/audio-in jacks.  If so, why
wouldn't there be a cable box that talked to them?  Using the TV tuner for
channel 3/4 reception seems antiquated.

I'll check around for such a box.  Or is there a standalone channel 3 tuner I
could buy?

If I didn't like this TV so much, I'd buy one whose infrared signals didn't get
so confused!  Actually, I had hoped I wouldn't need another set until digital
TV started.

Paul
452.6WRKSYS::INGRAHAMAndyWed Feb 19 1997 07:4734
> I thought most TVs these days had direct video/audio-in jacks.  If so, why
> wouldn't there be a cable box that talked to them?  Using the TV tuner for
> channel 3/4 reception seems antiquated.

Tradition?

I don't know, but there may be some logic in the sense that a good
demodulator (worthy of a larger screen TV) does have some cost.  Things
like comb filters and MTS add at least a few bucks; and if only 5% of users
used them, it wouldn't make sense.  They build to the lowest common
denominator.

Do the smaller TV sets (13" and under) also have video/audio-in jacks?

If you found a converter with video outputs, would it even work with
Continental's system?

Do you need descrambling for non-broadcast channels?

What is Continental's policy on direct (non-box) hook-ups?  The fact that
some channels aren't scrambled may imply that they have or had such a
policy.  If so, how do they explain their lineup change; or did they just
nuke the policy?  I wonder if there's grounds for restoring part of their
old channel lineup.

Ask if Continental has other converter models in their stock.  They may. 
And be persistent!  Though I've never requested specific models, I've gone
through a number of different ones within the last few years from my
cable co. (they all eventually died).

This model clearly has a compatibility problem with your TV brand, and one
would logically assume (though there is no logic to cable companies, I
know) that they aren't providing you with proper service until they fix
that problem.  The responsibility isn't yours to buy a different TV.
452.7WHY USE A BOX?ECAD07::DEVNOWed Feb 19 1997 12:2215
    Why do you have the Cable box hooked into the TV coax antenna input,
    currently from cable box, and CABLE   coax antenna input, currently
    direct from cable???
    Either use one or the other. Personally, I'd hook it up as follows::
    
    Cable from outside to cable input on Box
    Output on Box, to Input on VCR.
    Output on VCR to TV coax antenna input on the front of your TV.
    
    Better still, If you don't need a box, why do you insist on connecting
    it? The VCR will work ok without it, as long as you keep your TV on
    channel 3, and you aren't subscribed to any Pay channels.
    
    You can change channels using the VCR remote.
    
452.8METALX::SWANSONVictim of ChangesWed Feb 19 1997 12:4123
>   You can change channels using the VCR remote.

I think that's what .4 was suggesting.  ...which should work fine providing
the VCR is new enough that it gets the newly added channels on his cable
lineup.

If the VCR is adequately "cable ready" and you use this method, just
remember that above channel 54 you might find that the the channel numbers
on the cable box and those on the VCR do not match up.  For example, 
Comedy Central is channel 62 on my cable box, but if I use a VCR or TV to
receive this, it comes in on channel 54.

Also, dumb question but... if you change channels using your TV remote, does
your cable box also change channels?

If not, you might want to see if a universal remote could be used to change
cable channels without conflicting with your TV.  Try borrowing one from a
friend if you know someone who has one.  It's a shot in the dark, but it
just *might* work.  I'd put better odds on the "learning remote" type over
the kind where you just enter a code that corresponds to your cable box
manufacturer.

Ken
452.9ECAD07::DEVNOWed Feb 19 1997 14:034
    Never heard/seen a tv with the antenna input 
    on the front tobegin with, let alone why he has the Box output
    connected to one input jack, and the Cable connected  to another? 
    Like I mentioned earlier, either use one or the other.
452.10More ramblingsFUNYET::ANDERSONWhere's the nearest White Castle?Wed Feb 19 1997 14:3662
> If you found a converter with video outputs, would it even work with
> Continental's system?

Good question.

> Do you need descrambling for non-broadcast channels?

Some channels like AMC and Comedy Channel are scrambled but most are not.

> What is Continental's policy on direct (non-box) hook-ups?

When they made the channel lineup change the last week of January, they had
already sent out brochures and labels with the new lineup.  Unfortunately, they
did not mention the lineup would be slightly different if you didn't use a
cable box.  There was an article the next day in the Globe about the problem,
since it affected many suburbs west of Boston.  The article said that
Continental Cablevision estimated ten per cent of their subscribers used
cable-ready TVs.  To this day, there's scrolling text on the Weather Channel
stating that those without cable boxes should tune to channel 3 for the new
lineup.

> Personally, I'd hook it up as follows::
>    Cable from outside to cable input on Box
>    Output on Box, to Input on VCR.
>    Output on VCR to TV coax antenna input on the front of your TV.

Now I'd need to turn on the TV, cable box *and* VCR to watch TV!  This would
eliminate the remote control interference though.  The VCR goes past channel
120, so it would get all unscrambled channels.

> Better still, If you don't need a box, why do you insist on connecting it?

Some channels are scrambled.  And the SmartGuide feature is nice.  When
surfing, you get the time, channel number and name and description of the show
on the screen.  You can also scroll through times and channels to get program
listings for channels such as Starz! which aren't listed in the Globe's TV
magazine.

> Also, dumb question but... if you change channels using your TV remote, does
> your cable box also change channels?  If not, you might want to see if a
> universal remote could be used to change cable channels without conflicting
> with your TV.

Since we lost the TV remote control a few years ago, we now have a universal
remote that is programmed to work the TV, cable box and VCR.  I'll see if using
the universal remote instead of the cable box remote makes any difference.

> Never heard/seen a tv with the antenna input  on the front to begin with, let
> alone why he has the Box output connected to one input jack, and the Cable
> connected to another?

The connections are on the back of the set.  The buttons to choose the input
source are on the front.

> Like I mentioned earlier, either use one or the other.

The reason I have both connected is so if we wanted to watch an unscrambled
channel, we could just turn on the TV and select the channel without having to
turn on the cable box separately.  We've done it this way for the last ten
years, until channels we usually watch moved beyond the range of the TV.

Paul
452.11NETCAD::SIEGELThe revolution wil not be televisedThu Feb 20 1997 12:529
Why don't you just cover up the little red square on the TV that is the
infrared detector for the remote control?  This will prevent the TV from
acting on ANY remote control signals.  If it's not a TV model that forgets
everything when the power goes off (like the last channel selected), just
tune it to channel 3 and forget about it.  This would mean you'd have to
adjust the volume manually (or maybe your cable box can control the volume
of the cable signal, like some do).

adam
452.12SplitterECAD07::DEVNOMon Feb 24 1997 12:151
    Ever heard of Splitters & A-B Switch?? I use both.