> do not know who Receiver Front-End RF Amplifier should be active > for optimal performance for 160 m. I have a choice of flat > or Tuned for low band. When you receive on normal (TX) antenna, use: PREAMP=NONE (IPO green LED ON), ATTN=18 dB (max). Whenever the background noise make the S meter move, there is too much gain. 73, Sinisa YT1NT, VE3EA