[mythtv-users] Prebuffering pause

[John Finlay]

Yan Seiner wrote:
> John Finlay wrote:
>> Yan Seiner wrote:
>>> Brian Wood wrote:
>>>> On Saturday 07 February 2009 13:57:46 Jay Summet wrote:
>>>>
>>>>  
>>>>> However, as your signal strength is less than 100, I don't think your
>>>>> signal is so strong as to be overwhelming the tuners. My 
>>>>> suggestion: If
>>>>> your SNR is lower than 80, try repositioning one of the antennas
>>>>> radically (30-90 degrees) to see if that changes anything for your
>>>>> "problem" station.
>>>>>     
>>>>
>>>> Good suggestion. he may be getting multipath problems, a situation 
>>>> where you have lots of RF signal, but it's not usable due to it's 
>>>> coming from many different directions with differing time delays.
>>>>
>>>>   
>>> That's what I'm afraid of... I wonder if the HDHR is more sensitive 
>>> to multipath.  I have 2 highly directional antennas set at 90 
>>> degrees to each other.  That means that one should get strong signal 
>>> on that channel and the other should get a weak signal or none at all.
>>>
>>> Instead, I get 96% and 93%.
>>>
>>> Channel 17: no problem.
>>>
>>> selene:/usr/src/hdhomerun# hdhomerun_config 1016467C set 
>>> /tuner0/channel 8vsb:17
>>> selene:/usr/src/hdhomerun# hdhomerun_config FFFFFFFF get /tuner0/status
>>> ch=8vsb:17 lock=8vsb ss=54 snq=35 seq=0 bps=19395584 pps=0
>>>
>>> Channel 39: problem.
>>>
>>> selene:/usr/src/hdhomerun# hdhomerun_config 1016467C set 
>>> /tuner0/channel 8vsb:29
>>> selene:/usr/src/hdhomerun# hdhomerun_config FFFFFFFF get /tuner0/status
>>> ch=8vsb:29 lock=8vsb ss=93 snq=66 seq=100 bps=0 pps=0
>>>
>> You sstate the problem channel is 39 but the status shows 29. Is the 
>> 39 a typo?
> Typo.
>
> It seems to be a HDHR issue; I put a splitter on the antenna and ran 
> one leg to the PCDHTV3000; it doesn't have the problem.
>
> I'm guessing it's really bad at multipath rejection.
I'm surprised that you have seq at 100% and can't get a viewable 
channel. With my HDHR I always get a good picture if seq is 100 even if 
the snq is at 60%. Have you tried using the hdhomerun_config_gui to 
check the variations in signal. If I'm having problems with a signal it 
usually shows the seq varying between 0 and100 which translates to lots 
of pixelation and dropouts. Also it can be useful when realigning your 
antennas.

John