ATT/IF Key
Attenuator:
Press the ATT/IF key briefly to turn the receiver attenuator (ATT) on or off. The “S” in
the display will change to “A” when the attenuator is ON.
QSK Setup:
To change the QSK mode, press and hold ATT/IF for two seconds. Pressing ATT/IF
briefly will then cycle through Full (QSK), 250 ms, 500 ms, and 800ms. (The last three
are semi-QSK modes.) Press and hold ATT/IF again for two seconds to exit. Exit will
automatically occur if no operations happen for 8 seconds.
Changing the Frequency Tuning Steps
Pressing the Tuning knob will change the tuning step. In the amateur bands, the steps are 10
Hz, 100 Hz, 1 kHz. Outside the amateur bands, the steps are 10 Hz, 100 Hz, and 5 kHz. In
the RIT mode, steps of 10 Hz and 100 Hz may be selected.
Press and hold the Tuning knob for two seconds to set the tuning step to 100 kHz.
IF Filter Bandwidth Adjustment
Rotate IF FILT to change the IF filter bandwidth. Fully counter-clockwise selects the 400 Hz
bandwidth.
