Adjusting the PA unit to ensure stable 100W output across all HF bands and 6 meters. FT-891 - Yaesu
Micro-soldering equipment suitable for multi-layer PCBs and ultra-small surface-mount components. Safety and Precautions During Service yaesu ft-891 service manual
Some users have experienced problems with the FC-40 tuner, specifically that the transceiver would stop the tuning process if the SWR was too high. Understanding the signal protocol between the transceiver and tuner (details of which may be in the service manual) is useful for advanced diagnostics. Adjusting the PA unit to ensure stable 100W