Line In Gain = 40 seems too high to me. I have from 80m. 20m Line IN Gain = 2 and at 15m = 20. ALC always shows 3. 4 bars. TRX = K3s with power 2 ... 4 watts for the PA SPE Expert. PA output line 400 ... 500 watts depending on the band. 73 Lutz DL7UGO