apartment install

Hello all, I am in the Metro Boston area and am in need of opinions/advice regarding scanner antenna solutions for an apartment dweller. The Set Up - I am on the third floor of a 4-story brick and steel apartment building and face east. The "listening post" is in a livingroom that has a 10'x7'...

This is my home shack with my 2 radio shack pro 2096 top one is scanning the Colorado DTRS and the bottom scans Air, UHF&VHF. The top uses the 800mhz rubber antenna from radio shack and the bottom uses the stock antenna that works for the limits of what I can get in my apartment( no window or...