I have a BC-455 here, 6-9.1Mc dial .. but .. the IFTs and BFO are for 1415kc (the correct IF for the 3-6Mc receiver). The coil cover says 6-9.1Mc but I don't know what's inside. Haven't located part numbers for the RF coils .. is there something to identify what's actually in this RX? 73, ian K3IMW