PK232.14 6.) With the P.C. board positioned foil side up very carefully install a bypass capacitor across pins 11 and 4. In all cases pin 11, toward the rear of the board, is the minus side. Pin 4, toward the front of the board, is the plus side. Ideally a ceramic .1 UF @ 25 V or higher, and an electrolytic 1.0 UF @ 25 V or higher should be paralleled across the pins. The two different types of capacitors tend to provide alternate paths and avoid strange resonances that can occur when only one unit is used, providing more effective bypassing action. A fair amount of dexterity and attention to detail must be utilized by the technician. If you aren't fully confident of your abilities in this area, it is suggested that just one capacitor in the .1 UF to 1.0 UF range be installed. Also ceramic types are the most effective types, tantalums are not so effective. 7.) After carefully inspecting your work especially for shorts to neighboring pins, re-assemble the unit and properly re-connect all cables. I think, that like all others that have implemented this modification, you will be amazed at the enhanced weak signal receive capabilities. Brian W5VBO @ N7GLL