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finlay wrote:
<blockquote cite="mid:4820206E.1060202@moeraki.com" type="cite">
<pre wrap="">Dan Wierenga wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I finally got my antenna up on my roof, and I get a few HD stations
really well, and I get some pixelation on some others, and some I
don't get at all. I live in Los Angeles which from other posts to the
list should have all the stations broadcasting from the same place,
Mt. Wilson. From that I would expect to get all the channels with
roughly the same quality, but there is a dramatic difference between
the best quality channel and the worst quality channel.
</pre>
</blockquote>
<pre wrap=""><!---->You don't say how far from mt wilson you are and what type of antenna
you have and whether you have a direct line of sight to the towers. All
these affect antenna reception. Also multipath reflection can greatly
affect reception of dtv. The hdtv primer site has some useful
information on antenna installation:
<a class="moz-txt-link-freetext" href="http://www.hdtvprimer.com/ISSUES/erecting_antenna.html">http://www.hdtvprimer.com/ISSUES/erecting_antenna.html</a>
</pre>
</blockquote>
I agree, distance, line of sight, multipath and transmission power are
the main factors affecting you signal reception. What's the antenna
you're using? I'm not familiar with LA channels, so which ones are you
trying to get?<br>
<blockquote cite="mid:4820206E.1060202@moeraki.com" type="cite">
<blockquote type="cite">
<pre wrap="">Is there anything I can do to get my signal a bit better? Like a
signal amplifier, or something? I currently have coax cable plugged
straight into my antenna to my 3 televisions via a line splitter.
It's roughly 50 feet of coax cable from the antenna to the splitter,
and another 50-100 feet from the splitter to each TV.
</pre>
</blockquote>
<pre wrap=""><!---->Since you have some long cable runs and split the signal you might
consider adding a preamp to your setup - something like the channel
master 7777 would probably help boost the signal to overcome the cable
and splitter losses.
</pre>
</blockquote>
Again I agree a CM-7777 placed as close to the antenna as possible will
boost your signal. From my experience, anything longer then 50' you
start to get noticeable signal lost, and splitters cause even more
signal lost. You might even need another amp for each TV since from the
splitter it looks like you have another long cable run. Just remember
that these amps also boost noise levels and boosting too much you
signal may cause distortion.<br>
<blockquote cite="mid:4820206E.1060202@moeraki.com" type="cite">
<blockquote type="cite">
<pre wrap="">I've assumed that if my TV doesn't show a good signal then MythTV
won't record a good signal either; someone please correct me if I've
missed some facet of signal correction on the MythTV backend...
</pre>
</blockquote>
<pre wrap=""><!---->That has been my experiemce.
John
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</pre>
</blockquote>
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