- Could you help me with the following, "you can probably soup up your walkman just by removing that wideband filter, and running a separate wire directly to the tuning capacitor side of the ceramic filter. The connections should be very obvious (?)"

It appears from the service manual that this model does not use a wideband ceramic filter on the antenna. You should connect the center conductor of the 75 ohm coax to TP6, and the shield to TP7. Please note there will be no lightning protection and you could fry your radio if the antenna is hit.