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post #8431 of 8437 Old 11-26-2016, 02:51 PM
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BTW I noticed that 38.2 hasn't been working this last week, but that's no biggie since it was just informercials. Also, Rev'n on 38.4 is in "cube mode" again Can't they ever get that right?
Hmm.... Infomercials are back on 38.2, but they seem to be in slo-mo, and the sound is - well, on my DVR+ the sound is absent; on my HomeWorX it sounds like the Rev'n soundtrack, except it doesn't match what's on 38.4.

I guess KVFW decided to bring back their "follies" on 38.2

However, it does seem to match what Rovi's channel guide (still for 26.4 ) says "should" be on Rev'n. Makes me wonder if 38.4 is on a delay, or if Luken has both an east coast and a west coast Rev'n satellite feed.
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post #8432 of 8437 Old 11-26-2016, 08:43 PM
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Hey guys and gals. Is there a particular time of year in which signal degradation is most prominent taking into consideration signal multi path (I presume that this remains constant regardless of other factors), weather, and foliage (leaves are still on trees)? As I recently posted, I'm locked on now with the major networks and sub-channels and was curious as to whether I could anticipate changes during the spring/summer months due to heating of the atmosphere. My small, handheld, pole mounted antenna in the attic should not be impacted by wind. The reason I ask is that I'm tempted to run my OTA signal through my TiVo HD if it were to be expected to remain stable and I could then consider other streaming options in lieu of my Frontier FiOS service which I haven't had any issue with.
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post #8433 of 8437 Old 11-27-2016, 05:48 PM
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The big problem with respect to multipath is that trees leaf out in the spring then drop their leaves in the fall, so the relative strength of direct and reflected signals can change with the seasons, depending on how many trees are in your neighborhood and where they are.

Also, multipath is more of a problem when it's windy, even if your antenna is indoors. When the wind isn't blowing, modern tuners can often adapt to whatever multipath they're receiving. But when the wind blows, those tree limbs bend and sway, changing the signals - often too rapidly for tuners to keep up. I usually get my worst reception on windy summer days. (My situation is worse than yours, though, because my antenna is outdoors. So on windy days, both the tree limbs and my antenna move around.)

Temperature variations don't have as much effect unless a signal isn't line-of-sight. In that case, you can get multipath interference from ground reflections, causing the dreaded "fading" as the ground warms or cools. If that happens, sometimes angling the mast to point an antenna upward a few degrees will help.

It's very hard to predict in advance how you'll fare. Your current antenna may be just fine year-round. But if you do run into problems with multipath, a higher-gain antenna will often help since it's less sensitive to off-axis reflections. For cramped attic installations, I usually prefer panel-style antennas to airplane-style ones.
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post #8434 of 8437 Old 11-28-2016, 08:41 PM
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The big problem with respect to multipath is that trees leaf out in the spring then drop their leaves in the fall, so the relative strength of direct and reflected signals can change with the seasons, depending on how many trees are in your neighborhood and where they are.

Also, multipath is more of a problem when it's windy, even if your antenna is indoors. When the wind isn't blowing, modern tuners can often adapt to whatever multipath they're receiving. But when the wind blows, those tree limbs bend and sway, changing the signals - often too rapidly for tuners to keep up. I usually get my worst reception on windy summer days. (My situation is worse than yours, though, because my antenna is outdoors. So on windy days, both the tree limbs and my antenna move around.)

Temperature variations don't have as much effect unless a signal isn't line-of-sight. In that case, you can get multipath interference from ground reflections, causing the dreaded "fading" as the ground warms or cools. If that happens, sometimes angling the mast to point an antenna upward a few degrees will help.

It's very hard to predict in advance how you'll fare. Your current antenna may be just fine year-round. But if you do run into problems with multipath, a higher-gain antenna will often help since it's less sensitive to off-axis reflections. For cramped attic installations, I usually prefer panel-style antennas to airplane-style ones.
Thank you sir. Still surrounded trees holding leaves so the only real variable would appear to be the wind. It would've been nice to have had a chance to check signals while windy earlier today.
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post #8435 of 8437 Old 11-28-2016, 09:09 PM
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I just noticed two of the channels that broadcast from downtown Dallas are off the air: KPFW/18 and KWDA/30. According to Bob's graphs it looks like both went down around 5:20 PM today. A third downtown station, KLEG/44, is still going strong though.

Also, around the same time KHFD/51 started doing what KVFW used to do so often: they went into "zero-channels" mode. There's a carrier but no content!

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post #8436 of 8437 Old 11-29-2016, 01:31 PM
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I just noticed two of the channels that broadcast from downtown Dallas are off the air: KPFW/18 and KWDA/30. According to Bob's graphs it looks like both went down around 5:20 PM today.

Looks like KPFW/18 and KWDA/30 are both back up, around 1:45 PM today. Share the same facility?
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post #8437 of 8437 Old Today, 11:02 AM
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KVFW 38.x off the air all morning.
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