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

[Allen Edwards]

On Fri, Mar 13, 2020 at 10:21 PM Ian Evans <dheianevans at gmail.com> wrote:

>
>
> 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.
>
>
>> _______________________________________________
> That is similar to the setup I had in the early days. I first setup MythTV
> 12 years ago and at that time the stations had not figured out what they
> were doing and thus my 3 antennas. Before Myth, I had an early HDTV box.
> Back then HDTV was so new that they didn't even run commercials. I recall
> once phoning the station manager and telling him there was something
> strange on the screen. He could not see it on his monitor but flipped a
> switch and it went away which I told him. Long time ago, things change, and
> I can't remember how I dealt with the multiple antennas back then.


Allen
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