[mythtv-users] QAM Channel Scanner

[Bob]

Larry T wrote:
> I have been using a pcHDTV 5500 for approximately 3 years and I 
> remember there was a period where scanning worked for some people and 
> didn't work for others. Then a release came out and corrected the 
> problems.
>
> Since then, it had been working until a few weeks ago. A few weeks 
> ago, I stopped being able to tune in to channels that I used to have. 
> I rescanned using mythtvsetup and was unable to find the channels. My 
> total QAM channels had diminished by approximately 2/3. I scanned with 
> my TV with QAM tuner and the missing QAM channels were still present 
> (though not remapped). Thinking I had signal problems, I brought a 
> cable tech out and boosted my signal which did not help. Thinking my 
> tuner had gone bad or was not sensitive enough, I purchased a 
> HDHomerun which gave me new insight.
>
> To illustrate my problem, I will focus on my local CBS HD affiliate 
> which is 105.2 according to 
> http://www.silicondust.com/hdhomerun/lineupui?Cmd=LocationProgramsWeb&Country=US&Postcode=32904 
> <http://www.silicondust.com/hdhomerun/lineupui?Cmd=LocationProgramsWeb&Country=US&Postcode=32904>. 
> Both the 5500 and HDHR when scanning through MythTV detect the 105 
> range and lock on, then report it as "No Tables" and do not add any 
> subchannels in that range. They do not give any further details about 
> the subchannels. There is no indication of failing to tune or 
> encrypted channel or anything else as to why 105.x is not identified. 
> It jumps to 106 in which it reports a lot of encrypted channels. If I 
> use my TV QAM tuner or the HDHR Windows based software, I can locate 
> every QAM channel in the above link. The channels lock on and stream 
> fine with a reasonable signal.
>
> My settings for the scan appear to be reasonable because I do receive 
> some channels such as those in the 50 and 76 range of the above link. 
> Is this a known issue with a workaround such as manually adding the 
> channels? Is there any way to increase the relevant logging in 
> mythtvsetup to provide more detailed information? Thanks for any help.
> ------------------------------------------------------------------------
>
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>   
I have the same problem.  Attached is my solution.  Put your QAM data 
into the CSV file (keep the columns in the same order).  Then run the 
script.  The script will rename existing channels and insert missing 
channels.

No guarantees or refunds.  Send back if you make it better.

Bob
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