The Current Broadcast Tv stations/channels that are transmitted and received in the , USA , Canada , Mexico , are.
VHF low band channels 2 thru 6.
VHF high band channels 7 thru 13.
UHF band channels 14 thru 51.
Your location has receivable Broadcast Tv stations/channels , All 3 Tv bands.
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Install a Antenna Craft HD850 All channel antenna Above The Peak of the roof in such a manner that the reception is not impeded and blocked by the roof and house in the directions of , north west , north , north east , east.
Aim the Antenna Craft HD850 antenna at about 325 degree magnetic compass direction. San Francisco.
Here is how to aim the HD850 antenna ,
http://www.kyes.com/antenna/pointing/pointing.html.
The groups of Tv stations to the ~ east ~ , are Strong Signal Strength are LOS=Line Of Sight and as such , will be received at back angle and front angle to the HD850 All channel antenna.
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html.
Use the 5 foot tripod antenna mount , ronard (911) .
http://www.ronard.com/34424560.html , Use the , ronard (4560) , eave antenna mount.
http://www.ronard.com/ychim.html.
Measure the chimney , and use a , ronard (2212) or ronard (2218) or ronard (2224) .
Buy the ronard antenna mounts at solidsignal by typing , ronard (x) , inthe solidsignal search box or buy from ronard.
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Here are some places to buy antennas and etc. .
http://www.solidsignal.com.
http://www.amazon.com.
http://www.antennacraft.net.
http://www.ronard.com.
http://www.winegardirect.com.
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It is Ok to Test reception first With a Winegard LNA-100 'Boost' antenna system amplifier.
And then without the LNA-100.
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For 1 Tv connected use No splitter.
For 2 Tv's connected use a simple common 2 way splitter.
For 3 Tv's connected use a simple common 3 way splitter.
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As always , trees and tree leaves , plants and plant leaves , have a Negative effect on Broadcast Tv reception and so do hills and mountains and buildings including you own roof and house and other obstructions.
The Best Practice is to install the HD850 antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and house.
Digital Tv Tuners can develop - Digital Glitches - that are not cleared out with simple channels scans.
Do a Double Rescan ,
http://www.dtv.gov/rescan.html.
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Here is the Federal Antenna Law that says Yes you can install a Broadcast Tv Receive Antenna of Any Size above the roof so as to have reliable reception.
http://www.fcc.gov/mb/facts/otard.html.