13) ALL Key:
Connects the input/output circuitry to all speaker stations for use simultaneously during
fog-horn, hailer or public address operations.
14) Microphone PTT (Push-To-Talk) Switch
The PTT switch located on the side of the RAY 430 microphone is used to activate the
microphone, etc.
3.2.2 LCD Display
The custom LCD display on the RAY 430 is used to show the operation status of the
loudhailer in bright bold characters. The display is illuminated in a blue-green color
with adjustable intensity for best viewing in twilight or nighttime use. The lighting can
also be turned off by use of the On/Off & Dimmer control knob.
The Ray 430 has 4 operating modes. The selected mode is indicated by the message on
the left side of the display. The modes messages are:
HAILER — for Hailing or public address mode
INTERCOM — for Intercom operation on up to 4 different stations
SEE TABLE — for Fog horn Signal mode. The RAY 430 generates any one of 9
automatic or manual fog horn signals.
AUX — for Auxiliary audio inputs.
Figure 3-2 LCD Display
3—3
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