Recent RS-918SSB - Page 17

Frequency Display Explained
The frequency display operates in two modes, normal mode and split mode.
Color Codes of the Main Display
Digit
Color
Meaning
White
Normal operation, device tuned to frequency
Yellow
Outside specifications of the local oscillator chip Si570, but still usable
frequency
Orange
Non-tunable frequency, transmit disabled, LO operates at last valid
frequency
Red
Communication to local oscillator not working, probably I2C issue or RF
/ Si570 board connection faulty