Originally Posted by avs12fan
Yesterday I decided to finally drop my comcast tv as soon as I can reliably pull in all the networks. I have an unboosted RCA 70 mile range yagi antenna in the attic (about 25 ft above ground) aimed directly at the towers. I live in Marietta - East Cobb. I get a terrific signal from everything I want to see except CBS. The CBS signal is not stable and seems especially bad on Sundays. The picture pixelates and audio drops out frequently on overcast days On a clear day I don't have the problem but on an overcast day CBS is unwatchable.
So here's my question. What can I do that will actually fix this? I don't want to spend a lot of money or make a lot of effort (or both) only to find out that CBS just isn't doable at my location. Putting the antenna on the roof will be a real effort but I can do it if it will solve my issue. A booster might help but amplifying a crappy signal doesn't seem like the solution.
I've read through this thread and see that the CBS signal problem goes way back but didn't see anything that will help me. I would think that they would have fixed it by now.
Can you post a link to your rabbitears.info signal report for your address so we can see what your signal levels look like? It would be very helpful for this discussion. https://www.rabbitears.info/searchmap.php
WGCL (CBS) broadcasts from the same tower as WUVG, WPCH, WUPA and WATL. Are you getting good signals from those stations???
The first thing I think about when you say East Cobb is trees--lots of trees. Trees can interfere with UHF TV reception. I am a few more miles away (Acworth) and get some occasional glitches due to tree foliage.
An LTE filter is not expensive and certainly worth a try. The ChannelMaster LTE filter is about $20 on Amazon. Try to stick with major brands, some of the less expensive filters may be for the European bands which are a bit different than here.
You will always get stronger signals with your antenna mounted on the roof than you will with it mounted in the attic. Also, with it mounted in the attic, other metallic objects, wires, metal or foil heating ducts, etc can interfere with reception. If your signal is on the borderline, moving the antenna to the roof may be just what is needed.
Also, I have seen instances of other electrical equipment interfering with TV reception, sometimes just on 1 or 2 channels. Things such as LED floodlights, power supplies for LED undercabinet lighting, power supplies for laptop computers, etc.
Another good place to ask for advice is the Help With Reception forum on TVFool.com http://forum.tvfool.com/forumdisplay.php?f=7
There are some gurus on that forum who are real pros when it comes down to identifying and correcting reception problems. If you post on that forum, be sure to link you RabbitEars signal report and a good description of your antenna system (make/model of antenna, lengths of coax,
splitters, number of TVs, etc.)
You are right on target about the amplifier. If you don't have good signals to begin with, you will just be amplifying garbage. Amplifiers are good when you need to overcome long lengths of coax between your antenna and TV set(s)