Model: IC-R7000 Bulletin: B1905 Subject: To improve audio quality in SSB operation 1. Remove the top and bottom cover from the radio. 2. Remove the PLL board from the radio. 3. Change IC-1 from a MA78M08A to a MA78M08 (ICOM P/N 900- 00191) on the PLL board. 4. De-Solder and remove the VCO from the PLL board. 5. Change C6 (33 mf 10V electrolytic) to a 220 mf 10V electrolytic (ICOM P/N 918-01477). Install shrink tubing on then capacitor leads. 6. Change C17 (33 mf 10V electrolytic) to a 220 mf 10V electrolytic (ICOM P/N 918-01477). Install shrink tubing on the capacitor leads. 7. Reinstall the VCO unit on the PLL board. 8. Install the PLL board in the radio. 9. Replace the top and bottom cover.