as a last resort, you may need to consider cable or internet radio. there are some unfortunate locations for which even the best of antennae will not suffice.
FM Reception
Currently I am using a Terk with my tuner upstairs and a dipole downstairs. My reception is awful to the point that all FM must listened to in mono. I live in Benicia near the Carquinez strait (by San Francisco) so I am surrounded by hills and may not have a clear shot at an FM transmitter. The signals appear to be strong so I suspect multipath interference. I live in a condo so an external antennae is not feasible. Any suggestions?