Download USER`S MANUAL

Page 58
CAL TX IF SHIFT (Moves Tx IF up or down for best audio response) Set: CUxxx; xxx = 0‐255 (USB) (Default = 125; higher == shift up xx Hz) Set: CLxxx; xxx = 0‐255 (LSB) (Default = 190; higher == shift up xx Hz) Read: CU; or CL; Response: CUxxx; or CLxxx; ——————————————————————————————————————————————————————————————————— Cal Mic Gain (Adjust gain of mic preamp) Set: CMxxx; x = 0‐255 (Default 255 = max gain) Note: Mic gain is set by a digitally controlled 2.8K ohm potentiometer that is in series with a 4.7 ohm resistor in each lead. The wiper re‐
sistance is about 50 ohms. Thus the resistance can vary from approx 60 ohms (CM = 255, approx. 55dB gain) to 2860 ohms (CM = 000, approx. 15dB gain). Gain of the preamp is given by: Resistance Voltage gain Gain (dB) 4700 3.2 10 1100 10 20 330 31.3 30 100 100 40 32 314 50 10 1000 60 Read: CM; Response: CMxxx; ——————————————————————————————————————————————————————————————————— CAL RF GAIN (Adjust S‐meter for 0 with no signal) Set: CRxxxyyy; xxx = AGC Fast = 0‐255 (default value = 22) yyy = AGC Slow = 0‐255 (default value = 12) Read: CR; Response: CRxxxyyy; ——————————————————————————————————————————————————————————————————— Cal S‐Meter (Adjust S‐meter for S9 signal) Set: CSxxx; x = 0‐255 Read: CS; Response: CSxxx; ———————————————————————————————————————————————————————————————————