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NB Level: setting of NB suppression level.
NB Width: setting of NB suppression width
■ Adjust the Level and Width while listening to the noise you want to suppress
for best effect.
■ Improper settings of the NB parameters will severely degrade reception.
Do not turn the NB on unless you need to suppress pulse noise.
Voice Compression CMP
Voice compression can increase the average TX power output during phone
communication so that communications are possible under poor conditions.
1. Press the [CMP] button at the bottom of the screen in momentarily and the
voice compression indicator (a microphone) will appear at the top of the screen.
2. Press the [CMP] button again to disable voice compression.
Use voice compression only when you need it, as all compression degrades
transmitted audio quality slightly. When conditions are good, leave it off.
CW (Morse Code) Communication
You may use a CW key or an external keying unit. Insert the connector into the
KEY port on the rear of the radio. (See Page 10 for the definition of the required
plug wiring)
1. Insert CW Key/Keyer into the KEY socket on the rear of the main unit;
2. Press the [MODE] button to switch to CW (or CWR) mode;
3. Enable the QSK function by pressing the [KEY] button until the function
appears, also set the appropriate QSK time;
4. The radio will key into transmit when the Morse code key is pressed.
Practice mode
You can use the G90/S as a CW code trainer using the following method:
■ Disable the QSK function for the [KEY] function. Only the CW sidetone of the
transceiver will be heard when using the CW key. Signals will not be transmitted.