[mythtv-users] Semi-OT - Dual TV antennas

Mark fairlane at springcom.com
Sun Aug 23 15:20:39 UTC 2009


John Pilkington wrote:
> Mark wrote:
>> Brian Wood wrote:
>>> I agree I was probably overly-pessimistic, but I have seen many 
>>> cases of home users spending time and money fooling around with this 
>>> sort of thing and winding up worse off than when they started.
>>>
>>> Multiple antennas can be a good solution for some specific 
>>> situations, but can be difficult to implement, requiring very 
>>> exacting construction and setup.
>>>
>>> It also depends a lot of where the various stations you want to 
>>> receive are, a single off-axis station is a simple example, but the 
>>> OP is talking about local stations with probable multi-path and 
>>> non-line of site problems.
>>>
>>> To the OP: I used to live in Peterborough, we had a lot of fun 
>>> getting CITY in TO from there, this being back in the 70s, before 
>>> the CN tower was operational.
>>>
>>> I recall one evening when CITY had some sort of local news show that 
>>> referred to Trudeau as a "silly asshole", which I though was unfair, 
>>> or at least wrong.
>>>
>>> I still say TO is the cleanest city in North America.
>>>
>>>
>>>   
>> Not to hijack, but...  lets expand the discussion.
>>
>> Seems to me this could be an ideal application for multiple cards and 
>> multiple antennas.  I have often though of using
>> something like this with my setup.  Run an antenna to a card with no 
>> splitters.  Run another antenna to another card with
>> no splitters.  Edit channels so each card only picks up channels in 
>> that direction.  I have channels all around me at distance,
>> so this seemed like a good way to go.  Opinions?
>
> This should work, but you'll lose flexibility: each tuner will be able 
> to use only the signals from its own antenna.  If you have highly 
> directional antennas and transmitters in different directions, 
> combining and then splitting would allow more flexible scheduling.  
> You'll be likely to have problems in combining, though, if one 
> transmitter can be received with comparable signal strength by more 
> than one antenna.
>
> John P
Well that's why I thought no combining would be a good idea, due to the 
herculean task of tuning the combined antennas, which never works at 
more than a narrow frequency band anyway.


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