Anybody else have problems with the picture dropping out occasionally? Switching away and back to 12 brings the picture back for awhile, but then it drops out again.
Just wondering.
Thanks.
Just wondering.
Thanks.
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channel 12 reception problems
- Thread starter oldtimeradio
- Start date
Mike said:
Where are you located and what mountains are you near, if any? Those factors will make a big difference. Being too close to South Mountain (as I am) may also result in overload/intermod on 8, 10, and 12 from the FM stations. I'm looking to buy an FM trap to test my theory.
I have occasional issues with 8 and 12, but 10 is far and away the worst in my area near 44th St. & Chandler Blvd. My suspicions about FM overload are based on the fact that the VHF-Hi band is the 2nd harmonic of the FM band (88-108 x 2 = 176-216 MHz), plus I can hear the audio from several FM stations (notably KJZZ) on my shortwave receiver, which is the result of overload.
KeithE4 said:
Same here. I have one internal antenna (UHF loop with VHF ears) and TV combo that can tune 10.1 with very little pixelation/freezing but the other two are normally so bad I have to use 10.2. I'm near McClintock & Warner.
All VHF's seem to have trouble when the setting sun is directly behind the S, Mountain towers.
landtuna said:
I've noticed the same thing with possible solar noise, including problems with Tucson UHFs - especially KVOA/4 (RF 23) on winter mornings in December and January, when the sun is closer (as viewed from my apartment, which faces southeast) to Tucson. I wonder if anyone has ever looked into it.
I've also had it affect Channels 15 and 45 (RF 26) - probably the other lower-UHF channels as well, but I don't watch them.
KeithE4 said:
I watch 45 virtually every evening between 6-7 (BBT reruns) and they don't seem to be affected very often except when someone in the house walks in "front" of the antenna. Sometimes even the dog can affect the signal and he is 3 feet below the antenna.
I don't watch 15 very often but do notice a fair amount of signal loss from time to time.
61 almost never has a problem and I've never noticed 44.4 having trouble either although my viewing of that station is very infrequent.
As I mentioned in another post I was having problems every Saturday morning on 3 for awhile but not last Saturday. Don't know if they were messing with equipment or just repaired whatever was causing a problem. 3 pours in here trouble free during their 9PM news.
landtuna said:
I'm between you two, between Chandler and Ray, a few hundred feet east of the RR tracks, and I don't experience at all what you each are reporting. I have an antenna similar to this design mounted in the attic, which feeds two HDTVs. The only signal I have trouble with is KFPH-CD on channel 35, but lately, that's been coming in well too, and it's simucast on 33.2 in SD if I really need Telefutura programming. I used to have problems with people passing in front of the signal, or with passing cars, but once I put the antenna in the attic, no more. VHF and UHF are equally reliable. What I did find to be a problem on a trip I recently took is that trees will destroy a DTV signal, especially if the foliage is dense.
dhett said:
I've got two pine trees between the antennas and the towers but they are not dense and my problems seem to be intermittent and more weather/sunshine related. I would think if it were the trees the problems would be frequent.
Unfortunately, they are on a neighbor's property so I can't thin them or cut them down.
If you'll remember I had much the same problem with my big outdoor combo antenna up on the roof. The indoor loops actually seem to work better.
landtuna said:
Sometimes, what's in front of you isn't the only problem. If what's behind or to the sides of you is reflecting signal, you may still experience multipath. I sometimes gather TV signals when I travel, and at times, I've actually had to point the antenna away from the signal source to get the best signal. The sunset issue you get is the weirdest thing I've ever heard of. Unfortunately, I'm seldom home by sunset to experience that problem. As for weather-related issues, if you experience more problems when it's windy, then my bet is trees.
Again, when DTV has optimal conditions, it's great, but if not, it can be frustrating beyond belief.
dhett said:
I had an electronics instructor in the Navy that once told the class that antenna propagation (and I assume he also meant reception although digital wasn't in the cards way back then) was more magic than science. I now believe him.
I have discovered many weird things since TV went digital including:
People walking to the side of the antenna will kill or pixelate the signal.
People walking on the 2nd floor of my house above the antenna can disrupt the signal.
People walking in back of the antenna can disrupt the signal.
It's almost deja vu all over again. I remember my father endlessly fiddling with an indoor antenna back in the 50's when any little adjustment would knock out one station and bring in another. Seems like we have regressed.
The only advantage to digital that I personally can see (other than PQ of course) is that airplanes flying overhead do not seem to affect the signal as they did in the old analog days.
Thanks for all the help. Much appreciated.
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