T.G. said:
Try this. Take a piece of television twin-lead (the 300 ohm stuff), attach a piece about 10 feet long to the FM antenna terminals of the Super Radio. Leave the 2 wires at the other end unconnected.
Tune in your strongest interfering station- then as you stretch out the twin-lead take a razor blade and pierce the insulation of the twin-lead effectively shorting the two wires together.
Start at the end of the twin-lead and slowly work your way toward the radio (an inch at a time) shorting the leads with the razor blade until the interfering signal drops way down. Mark this point on the twin-lead for a permanent short of the two wires, which you can do once you've found the right point on the twin-lead.
Voila! ....you've filtered out the interfering station. (You've also reduced the signal a little on all the stations, that's why you need to focus on removing the strongest interferer the most.)