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Old 14-Nov-2019, 11:27 PM   #3
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,569
Quote:
Originally Posted by tuktuk View Post
Every fall I get frustrated as my Fox reception goes choppy or pretty much freezing... it seems ok during spring/summer. Here's the map info:

http://www.tvfool.com/?option=com_wr...9038c33482528a
Hello, tuktuk

Thank you for the signal report.

That's unusual. We usually hear about reception improving in the winter when the trees lose their leaves, unless they are evergreen trees.
Quote:
Trees that lose all of their leaves for part of the year are known as deciduous trees. Those that don't are called evergreen trees. Common deciduous trees in the Northern Hemisphere include several species of ash, aspen, beech, birch, cherry, elm, hickory, hornbeam, maple, oak, poplar and willow.
How many TVs are connected to the antenna?

Are you using a preamp? If you are using a preamp with your strong signals, there is a possibility of overload. Even without a preamp there is a possibility of overload with some tuners. Try inserting an attenuator to make the signals a little weaker. There is such a thing as too much signal.

Quote:
I currently have clearstream 2, I am now thinking of an omni directional since towers are in San Francisco in north, and San jose in south, also to the east. Searching on google, I get two coming up repeatedly:

o lava omnipro hd-8008
o antop dual omni 415b
Omni antennas receive poorly in all directions, but you are welcome to try one to satisfy your curiosity.
https://www.channelmaster.com/OMNI_O.../cm-3011hd.htm

Thank you for the additional information by PM so that I could look at satellite and ground photos of your location.



This is an image of your TVFool report:



For comparison, this is a signal report from rabbitearsinfo for your location:
https://www.rabbitears.info/searchma...study_id=27891

This is an extract from that report:



Quote:
Any recommendation on one of the above, or for that matter best antenna for me? I all be installing on the edge of the roof, which is about 17 ft or so, I can add a pole for extra 2-3 ft, so close to 20-22 feet.
I think you should stick with just the channels from San Francisco which has Fox.

Your channels are strong enough so that you should be receiving it OK. Perhaps the trees are in the signal path from San Francisco. Try moving the antenna to slightly different locations before making any permanent mounting.

If your present antenna doesn't have enough gain on VHF-High for KNTV NBC on 12 and KGO ABC on 7, try a Winegard HD7694P antenna.

If you look at your rabbitears.info report in the link, you will see a column on the right called Repack Info; I cut it off the image above. It shows you the Repack Phases when the channels will be changing in the near future, which will require you to rescan.
Phase 8 1/18/2020 to 3/13/2020
Phase 9 3/14/2020 to 5/1/2020

At times before and during the phases, the signals might be weaker because antenna work for the new channels is being done.

This is the Repack Plan for San Francisco:
https://www.rabbitears.info/repackch...=&lss=&status=
Attached Images
File Type: jpg tuktukTVFreport11-13-2019.JPG (103.4 KB, 843 views)
File Type: jpg tuktukTVFreportRE2.jpg (249.8 KB, 840 views)
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Last edited by rabbit73; 16-Nov-2019 at 7:14 PM.
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