Another essential thing (it is something control by the wiring on the passenger side, I have lost track of what went out, this is the 5th repair in my 9 years of ownership) went out before the end of summer. So rather than fixing potentially more broken wires in the cold, I fixed them before fall/winter hits. Since I am there already, I opened up the driver side and discovered the antenna itself was fine (which i have fixed before), but there are two+ ground wires that were broken. As soon as the ground wires were fixed, receptions to AM and FM are back to normal.
Side note: my colleague was having problem with their recently acquired 2008 wagon. Car starts but could not shift out from P. It turns out the wire for top mount brake light was broken and prevent it from shifting out of P. I have experience with broken brake light that prevent Subaru from starting/shifting out of auto transmission. So, as soon as i told them to check the wiring, their mechanic fixed their problem in 15mins.