[mythtv-users] Dual tuners with different channels

Khanh Tran khanh at slc.edu
Tue Dec 7 22:38:45 UTC 2004

What cable company do you have with what cable box?  My cablebox gets
periodic firmware updates (usually at 2AM on Sunday) but it doesn't
power off.  It reboots and comes back to "on".

My cable company has only a few channels that are different on digital
than on non-digital.  So long as you're using the Data Direct serivce,
you shouldn't have a problem.  This is espcially great now that 0.16 can
merge the channels that are the same on different tuners!


-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Randy Carpenter
Sent: Tuesday, December 07, 2004 5:13 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuners with different channels

> >>1. Is there a way for MythTV to detect if the cable box power is on,

> >>and turn it on if necessary? Simply leaving the cable box on all the

> >>time is not necessarily an option, as sometimes the cable company 
> >>uploads firmware upgrades, and that causes the box to reboot, and
sometimes shutdown.
> >>    
> >>
> It can't necessarily detect if the cable box is on.  Does your cable 
> box have descrete codes for turning on and off or just a toggle code.

> If descrete, you could just send the power on command as part of your 
> channel changing script.

No discrete code is available. If there is no way to tell what the state
of power is, then I might be out of luck, and not able to even use
I will be stuck with the crappy cable DVR (yuck).  How do others deal
with this issue with cable boxes and satellite receivers?

> >>2. I want dual tuners, but don't want to hassle with 2 boxes. If I 
> >>connect a digital box with an IR blaster (giving me channels 2-78 
> >>analog, and
> >>100-300+ digital), and I have a second tuner card with just analog 
> >>100-300+ cable
> >>(2-78) coming in, can MythTV be configured to handle this? Recording

> >>digital channels would need to default to the first tuner, but the 
> >>first tuner would also need to be able to record analog stations, in

> >>the event that 2 analog stations needed to be recorded at the same 
> >>time. I understand that I cannot have dual tuners on digital 
> >>stations. This is ok, as I record very little from the digital

> Yes, this can be done.  One caveat, if you are using DataDirect you 
> will probably need to create two lineups.  One for the analog channels

> and one for the digital channels.  You may need to use different 
> zipcodes (just use the next closest zip code to you) in order to 
> create two cable lineups.

There are 2 separate lineups for my cable company for digital, and
non-digital, so that should not be an issue.  Is MythTV smart enough to
handle the 2 different lineups? For example, if it needs to record an
analog station, and a digital station, will it know to use the
analog-only tuner for the analog station and the digital for the digital

There are many scenarios I can think of that could seriously confuse the
software, since there are different channels on each tuner.


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