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Houston, TX - OTA - Page 15

post #421 of 6141
Lately I'm having a lot of trouble with channel 11's reception. Out of all of the channels, it is the hardest one to hold the signal. This just started in the last week. Is anyone else having this problem?
post #422 of 6141
Lately I'm having a lot of trouble with channel 11's reception. Out of all of the channels, it is the hardest one to hold the signal. This just started in the last week. Is anyone else having this problem?
post #423 of 6141
Not really; for me, being so far away from the farm, 11 is my best reception along with 2 and13; I have far more problems with Fox and UPN; some days I get them and some days I don't! the price I pay for being in Cleveland I guess; I'm happy to get any of them, even with my very tall, mast mounted antennae!
post #424 of 6141
Quote:
Originally posted by RDAugust
Lately I'm having a lot of trouble with channel 11's reception. Out of all of the channels, it is the hardest one to hold the signal. This just started in the last week. Is anyone else having this problem?

RDAugust,

Do you have an antenna rotator ?? There are times when I have to adjust mine ( weather, etc. ) Channel 11 is also multicasting. I know that the other stations are also, but 11-1 is my worst channel --- especially for football !!! They are starving their HD signal so they can multicast something no one watches !! P*sses me off !!!

Does anyone know when 11-1 is going to broadcast 5.1 again. I know that they are moving their equipment upstairs. I was just wondering when they would be back up. The stereo was fantastic yesterday during the STEELERS victory !! ( Was there ever any doubt ?? ) I would have loved it in 5.1 !!

Bill
post #425 of 6141
wjg: Ch-11 probably won't have 5.1 up until sometime in Feb...could be later, depending upon equipment deliveries, installation time, software configurations, etc.
post #426 of 6141
It seems I have the opposite problem that everyone else has in this forum.
I live in Pearland and I'm using a Squareshooter on my rooftop pointed almost exactly due west.
I receive all the HD stations in the 90s signal strength...except Fox, which is at 40ish. I have Dish as my regular feed into my Mitsu 725 series DLP.
According to antennaweb.org, all of the stations are in the 271 or 274 degree range, except for fox, which is 277.
It seems odd that everything comes in perfect except that one station which is almost half the strength of the others. Would 3 degrees make that much difference?
Anyone else have this problem? It's driving me crazy because of the amount of football Fox broadcasts in HD.
Any tips would be helpful.
post #427 of 6141
Quote:
Originally posted by Dssquared
It seems I have the opposite problem that everyone else has in this forum.
I live in Pearland and I'm using a Squareshooter on my rooftop pointed almost exactly due east.

I hope you meant West. The antenna should pointed west from Pearland, parallel to 518.
post #428 of 6141
You are correct sir! My bad. It is pointed west parallel to 518. I corrected the original post.
post #429 of 6141
Quote:


Originally posted by Dssquared
You are correct sir! My bad. It is pointed west parallel to 518. I corrected the original post.

Actually, I was hoping that it was backwards - because that would be an easier fix. I will be back in the station on Tuesday. If you want, call me at 713-435-2860.

I'm testing some consumer antennas and would like to take a look at yours.

Bob Chase
KHWB-TV
post #430 of 6141
Quote:


Originally posted by RDAugust
Lately I'm having a lot of trouble with channel 11's reception. Out of all of the channels, it is the hardest one to hold the signal. This just started in the last week. Is anyone else having this problem?

It seems I'm having more and more problems with channel 11, too. Drop outs and freezing seems to be getting worse. It varies. Channel 13 is worse, for me. I can't get channel 2 at all (don't watch much of their programming anyway), 20 is so-so, 26 is decent, wish it was better. Channel 8 is great, but I can only stand so much of watching DNA assessments of King Tut's family.

After reading what I just wrote, I'm surprised I can enjoy HD at all...

But I do!!!
post #431 of 6141
Hello. Wondering if anybody can tell me how the OTA reception is up by The Woodlands area?

I see that the towers are about 30-35 miles south - east, but cant tell what he needs. Indoor, or Outdoor.

Im from Chicago and am trying to help get my brother up and running.

thanks
post #432 of 6141
I live not too far from the woodlands. His major problem will be all of the trees up there. Before getting the antenna on the roof, thanks to Voom, I had an amplified RCA indoor antenna. I placed it in the attic and was able to pull in all channels except PBS. The antenna is sold at Target and Walmart. It is the RCA with 35 - 45 gain. I am seriously thinking about going back to it. I think that the wind is messing with the one one the roof and causing me problems.
post #433 of 6141
Thread Starter 
Jim - I would definitely give an indoor antenna a shot, but don't expect too much (who knows, you may get lucky). If he already has an antenna installed, then he may be fine. After all, HD OTA signals are mostly just ordinary UHF from an electromagnetic perspective (though two stations are VHF...).

BobChase - any chance of your posting a synopsis of your testing with various consumer models? If you want to hook up some gear to an attic mount, I'll offer up my installation.

Later,
Bill
post #434 of 6141
Quote:
Originally posted by Ursa
BobChase - any chance of your posting a synopsis of your testing with various consumer models? If you want to hook up some gear to an attic mount, I'll offer up my installation.
URSA,

I have some VERY preliminary data. What I have been struggling with is putting words around the pictures. If you will excuse the expression - "dumbing down the engineering". I have also been in discussions with some of by peers around the country talking about measuring multipath. Signal strength is only half of the equation. (Maybe only a third.)

No big surprises in the winners so far. The 4221 and the 4228, both inside and outside.

Big surprise in the looser category is the 4248. I don't know how many times I have recommended that antenna. Plus I have owned it twice (at two different homes).

The only all-band antenna I have tested so far is the HD7210P. It's middle of the road for UHF signal strength, better than the Square-Shooter, not as good as a 4221. And, of course, it gets both ch-9 & ch-5 quite well.

Here is the data. Zero dB is 1, - 10 dB is 1/10 , -15 dB is 3/100, -20 dB is 1/100, -25 dB is 3/1000. A dB is a logarithm referenced to some value (power, voltage, or in this case, a reference antenna). So the chart is antenna gain referenced to a Scala 1469B log-periodic antenna's gain. The Scala is a $600 "broadcast quality" low-power transmit antenna. It has a gain of 8 dB over a dipole (+8dBd), which is x6.3 gain. It's gain is also dead flat from ch14 to ch 69 so there is noe of that "averaged gain" small print to worry about.

I really didn't believe the data at first, so I did some checking around. Some 60's data on inside UHF reception at 3500 sites said that this data is right in the ballpark. Which is scary because you are loosing from 99% to 99.9% of the signal with an attic antenna.

But is also explains why the CM7777 works so well! I couldn't figure out how an overloaded amplifier could ever work for DTV. It turns out that there is a 20 to 25 dB attenuator in front of the antenna that keeps the 24 dB gain amplifier from overloading!

Call me at the station and lets take a peak in your attic. I'll bring my antennas and we will play mix & match.

Bob Chase
KHWB
713-435-2860

 

2004-12-11 testing attic antenna performance v03.pdf 129.5986328125k . file
post #435 of 6141
This will really put a hitch in your get-a-long.

This is all the same antenna at different places in the attic, referenced to the same antenna outside on the pole. Position 3 & 3A is the difference between the antenna lying on the floor boards of the attic and siting at exactly the same spot but up on a 24" roll of fiberglass insulation.

Again, just signal strength, no multipath considerations.

Enjoy,

Bob Chase

PS. If this and the preceding post are over your head, it OK. It's over the head of many broadcast engineers too. Just take away this one thought. Inside = Bad, Outside = good. Good night all.

 

attic position testing.pdf 31.2001953125k . file
post #436 of 6141
I stopped receiving KPRC DT sometime yesterday. Is channel 2 digital off the air? I never had a problem before. I'm getting all the other locals fine. I tried rescanning and rebooting (Samsung TS360) and that didn't help. So I am inclined to believe the problem is not at my end.
post #437 of 6141
Something changed on their end. The channels were showing up on 35-3 to 35-6, and not mapping to 2-x. I rescanned, and the remapping just showed up again.
post #438 of 6141
Yep, was going to ask the exact same thing. Tried to watch "Joey" at 7 tonight and no channel 2 stuff was anywhere to be found. Re-scanned for stuff while giving the kiddo her bath and when I returned downstairs 2-1 and all were back where they belonged.

In other, "what the?" news... I got my first lockup EVER using my TS160 while watching 11-1 CSI:Miami last week. Bob, any idea if you guys were monkeying around with PSIP stuff that day? Monday, I believe. It died about 15-20 mins into the program. Had to unplug the sucker and let it rescan all the sat stuff. Fun. Oh well.. the price of technology.
post #439 of 6141
Quote:


Hello. Wondering if anybody can tell me how the OTA reception is up by The Woodlands area?

I see that the towers are about 30-35 miles south - east, but cant tell what he needs. Indoor, or Outdoor.

Im from Chicago and am trying to help get my brother up and running.

I live in Montgomery (West of Conroe, North of the Woodlands). I'm in the middle of tall pine trees and am able to get all the major channels. NBC, ABC, Fox, UPN, PBS, CBS. Ch. 39 is pixelated most of the time, but luckily I don't watch much on it.
post #440 of 6141
From other threads on the forum, KPRC is probably making changes to their PSIP to comply with regulations due 2/1/05. I noticed my HD-TiVo showing KRPC at 35-1 yesterday, and I had the same thing as Iceblade today. A rescan of all channels put everything back to normal...

Jeff
post #441 of 6141
"I tried rescanning and rebooting (Samsung TS360) and that didn't help. So I am inclined to believe the problem is not at my end."

Same here and noticed the switch to 35-1 yesterday, it's some sort of PSIP thing. Will check the other receivers to see but the 360 is stuck on 35-1 right now. It will resolve sooner or later.
post #442 of 6141
Quote:


Originally posted by mikey p
"I tried rescanning and rebooting (Samsung TS360) and that didn't help. So I am inclined to believe the problem is not at my end."

Same here and noticed the switch to 35-1 yesterday, it's some sort of PSIP thing. Will check the other receivers to see but the 360 is stuck on 35-1 right now. It will resolve sooner or later.

Interesting that other receivers have resolved the PSIP change but not tthe 360. Wonder why that is. Oh well, I'll check again tonight. Nothing lost in any event.
post #443 of 6141
I had the same problem, had to unplug the 360 as it was locked solid. I had noticed it was slowing down in response times, then the big lock.
post #444 of 6141
FWIW,

After I posted last night, I went surfing through the channels and actually had all the 2-1, 2-2 and 2-3 channels reappear of a rescan AS WELL AS the 35-whatever channels. Very freaky. The 35-X channels actually had the programming info in the guide while the 2-X channels just said "DTV Program".

I'll check on what's what tonight when I get home.

Thanks,
Jeff
post #445 of 6141
After I posted yesterday. I rescanned, rebooted, unplugged in a combination of sequences but only got the 35-1, 2 and 3. Nothing on 2-1, 2 and 3. I'll see what I get tonight when I get home and let you all know. I sent KPRC an e-mail also. So far no response.
post #446 of 6141
Well, once upon a blue moon, the KPRC engineer used to hang around AVS. "kprcdt" was his moniker. Can't recall what his name was, but his initials were "EZ". He hasn't posted here in ages... maybe he's still lurking. Perhaps we could try PM-ing him as well?

Regs,
Jeff
post #447 of 6141
"Interesting that other receivers have resolved the PSIP change but not the 360. Wonder why that is."

Well if you think that's funny, wait for this....... Of the four receivers I have only the 360 in the bedroom has this issue, the others a 360, 165, and a MyHD card all are A-OK like there was no issue at all, riddle me that one.
;-0

None the less it will work out, this stuff comes and goes with no sense? Likewise I wonder where the fellow from Ch 2 went, he was always helpful and interesting like the guy from Ch 39.
post #448 of 6141
Well I spoke too soon... A re-scan found 2-1, etc. but there's no programming data available in the guide for 2-1 (I checked again this morning, too). The data is still associated with 35-1, as are my TiVo Season Passes. But manually tuning to 35-1 gets no video (searching for signal)... At least for tonight, I set up some manual recordings on 2-1, so hopefully I'll still get NBC shows recorded.

Sounds like a call to DirecTV - I'm not sure why the guide data didn't follow. I wonder if they changed their station ID text (or whatever) when they upgraded their PSIP, and now D*'s data doesn't match up???
post #449 of 6141
Well I came home still no remapped KPRC. Fine on 35-1, 2, 3 but no 2-1, 2, 3. Rebooted, rescanned and still nothing. I wouldn't think D* would have anything to do with the local channel remapping since we're talking OTA and not satellite;, but I really don't know much about it. Looks like I'll just get used to watching 35-1 when I watch NBC until the problem gets sorted out.

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post #450 of 6141
I think I see the problem now. 2-1 used to be called "KPRCDT", and that's what's showing up on 35-1 in the guide. But 2-1 is now called "KPRC-HD". I wonder if that's what DirecTV's guide data is using to associate? I hesitate to call D*, maybe a call to KPRC is in order, too...

Jeff
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