[mythtv-users] Repack woes - 2nd source not finding new channels...but HDHomerun does

[Ian Evans]

On Sat, Mar 14, 2020, 12:40 AM Allen Edwards, <allen.p.edwards at gmail.com>
wrote:

>
>
> On Fri, Mar 13, 2020 at 7:00 PM Ian Evans <dheianevans at gmail.com> wrote:
>
>> North American channel repack. MythTV 29-fixes.
>>
>> Two stations changed frequency today. I have two HDHomeruns, each
>> connected to its own antenna (long story).
>>
>> I ran mythtv-setup. Went into Input Connections and set the scan range
>> for the first station. 31-31. It found the channel and its subchannels.
>>
>> Rinse and repeat with channel 34. Found the channels. I exited and went
>> to run the scan on the second input. Channel 31...no new channels found,
>> though it shows the signal strength is good, it also says no lock. Same for
>> channel 34.
>>
>> So now I only have the channels on one input connection instead of the
>> previous two. Running an HDHomerun utility, I see that, in CB parlance,
>> both channels are "wall to wall and treetop tall" on both HDHomeruns. So
>> why would MythTV only be finding them on one input?
>>
>> Should I run full range scans on both connections again?
>>
>>
> Do your two antennas have different Schedules Direct lineups?  I have two
> HDHR dual tuners and channel 2 (31) can record from any of the 8 virtual
> tuners that gives me. I don't think the HDHRs know how many antennas but if
> they are pointed in different directions perhaps they are actually not
> picking up the stations. I am probably not being that helpful and it has
> been a long time since I had multiple antennas pointed in different
> directions so the memory is weak. At one time I had three antennas, one
> north, one south, and one south east. It is no longer necessary as PBS
> broadcasts the same programs on their two locations and NBC is now has a
> transmitter both north and south of me.
>
> So my advice is if you have antennas in different directions you
> reconsider that in light of where people are transmitting from and if you
> have both antennas pointed in the same direction then the HDHRs should not
> be able to tell the difference.
>
> One thing you might do is just delete everything and do a full scan. That
> will probably leave you with one station you don't want but perhaps you
> will get a prompt to discard the weaker one. Otherwise, just scan delete
> the station and scan for the one you want. I didn't do it that way because
> I don't want to get all the stations that I can, like the ones in languages
> I do not speak.
>
> Allen
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Hi Allen,

Thanks for the advice. I fixed it. I'll tell you about my set up in a
moment, but first, here's what I did.

The second input wouldn't do a single channel scan like I did for the first
input. So I tried a full vhf/uhf range scan and the channels locked in and
got added. Go figure. And I have to do this again Monday because a third
channel got a weekend extension from the FCC. So strange that I could do a
single channel scan on one input but not the other.

Optional explanation of my goofy setup that might inspire some:

I live in an east facing apartment in Toronto. The CN Tower, which
broadcasts my local Canadian channels, is a few miles away slightly
southwest of me, through the building. So I have a small antenna pointed at
a curved building across the street and half a block north. Like a dish it
reflects the bounced signals. Buffalo is southeast of me. The first antenna
also catches some of those signals quite well, from the side no less. Quite
a feat considering Buffalo is across Lake Ontario.

I have a second antenna pointed directly at Buffalo. It also catches some
of the Toronto signals as I'm so close to our broadcast antenna that a
paperclip 📎 would probably be fine.

I have two HDHomeruns. There's some duplication of channels just so that I
have choices and can generally avoid scheduling conflicts. If I had an
HDHomerun Quattro on the US facing antenna, I would probably drop the
duplication.


>
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