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Description of Key Functions and Parameters
Warble
This key causes a warble-like sound to be transmitted on the "selected" channel.
M25 Fast Warble
This key generates a fast warble sound to the "selected" channel. This warble is consistent
with the same function on the Model 25.
Volume and Mute Keys
Volume Adjust (Knob)
The volume adjust key allows the volume of a specific channel to be set or changed at the
console. Pressing the key will cause the current volume level (in percentage) to be
displayed. Turning the "channel volume" knob while holding the key down will cause the
volume level to be changed with the new value displayed on the console display.
Mute Adjust
This is a dual function key and is more correctly called the "mute/volume adjust".
Pressing and releasing the key causes the channel's received audio to be muted. The red
light by the key will remain on while the channel is muted. Pressing again will unmute the
channel. Pressing and holding this key will allow the channel volume to be set as
described in the preceding paragraph, "Volume Adjust".
Volume Up (Key)
This key is assigned to a specific channel to allow "one hand" volume adjusting. Pressing
this key will cause the current volume setting to be displayed. Holding the key will cause
the volume to be adjusted upwards. Releasing the key will cause the volume to be set to
the displayed level. The red key indicator will illuminate while the key is pressed.
Volume Down (Key)
This key is assigned to a specific channel to allow "one hand" volume adjusting. Pressing
this key will cause the current volume setting to be displayed. Releasing the key will cause
the volume to be set to the displayed level. Holding the key will cause the volume to be
adjusted downwards. The red key indicator will illuminate while the key is pressed.
Volume Mute
The Volume Mute key will cause the specific channel's volume to be "muted" to the mute
pre-set value. The red LED associated with the key will illuminate showing that the
channel is muted. If the channel volume option is not present, the mute level will be set to
zero.
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