SB-818 TR-2400 Scratchy TX 3-20-80 Complaints of scratch audio, noise when flexing the antenna, or noisy audio when handling the unit during transmit may be remedied by tightening the Printed Circuit Board screws. To disassemble the unit remove the back cover and battery compartment screws. INspec t the VCO shield solder points along the edge and bottom of the PLL board. Resolder if you find a broken solder bond. Flex the metal frame several times to reseat the board, and retighten the board mounting screws. Be certain the flat metal spring has good tension when installed between the RX TX unit a fram (below the PTT switch). JEB/yn (c) 32080TKC