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You are in a multipath hell, between you and Baltimore are so many hills and there are hills all around you so that is working against you. But all hope is not lost.
For football you need:
Any NBC station
WPMT Fox Real 47
WHP CBS Real 21
WJZ CBS Real 13
WBFF Fox Real 46
There is something really sucky about needing Real 46 for Fox from Baltimore; you are practically next to real 47, so selectivity of your receiver becomes important. It also means combining signals from WMPT and WBFF passively is going to be very difficult.
VHF should take care of itself with a VHF antenna pointed at Baltimore to get WJZ. WGAL has a STA to run way more power than TV fool is predicting them using so a paper clip in the back of your TV would probably get WGAL. A VHF antenna pointed at Baltimore will be very likely to get WGAL just from the large amount of signal you have.
UHF either needs 2 separate antennas, one to get WPMT and one to get WBFF, or it needs 1 antenna that can be rotated to get either. You cannot combine the two antenna leads, with WBFF and WPMT being adjacent channels and WPMT being nearly 50dB stronger anything you do to combine them will result in WBFF being lost. Whatever antenna you use to get WBFF ideally will null out WPMT. I don’t know what to tell you about WHP, it is on the other side of your building. Last season when I checked WHP and WJZ had the same games.
If you use a rotor, you need a way to control the rotor. Or,
You can use a UVSJ to combine the VHF antenna pointed at WJZ with one of your UHF antennas. If you use 2 UHF antennas, you could even split your VHF antenna and feed 2 UVSJ’s, one for the WPMT antenna and one for the WBFF antenna. At your TV you will either need an AB switch or a 2nd tuner connected to one of the TV’s inputs.
I focused on the football stations above. Antennas from one system or the other will pick up most other networks. The one place you may have problems is WHTM Real 10, your local ABC. My gut feel is it will be easier for you to get WMAR than to get WHTM.
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