LH3000 Loud Hailer Operations and Information Quick Guide GP Page 2 11/18/2004
Adjusting Output Level
Turn the [HAIL VOL] control clockwise to increase output volume from the horn speakers or intercom speakers.
Adjusting Listening Volume
Turn the [LISTEN VOL] control clockwise to increase the volume of the internal speaker and external speaker (if
connected).
Calling All Intercom Stations (To call all intercom stations while sounding warning signals, see page 17)
1. In the “standby mode”, hold the microphone 2-3 cm from your mouth and press the PTT switch on microphone.
Speak into the microphone. All intercom stations and both horn speakers will hear you.
2. Release the PTT switch to return the equipment to the standby mode.
Calling a Specific Intercom Station (To call an intercom station while sounding warning, see page 17)
1. Press the [Intercom Select] key until the indicator lights on the desired intercom station.
• After a one-second delay, a short tone sounds from the selected intercom station.
2. Press the PTT switch on the microphone and speak into the microphone.
3. Release the PTT switch to listen for a reply from the selected intercom station.
• If necessary, adjust listening volume with the [LISTEN VOL] control.
4. After completing your conversation, press the [Hail Select] key to return to the standby mode.
Receiving a Call from an Intercom Station
When an intercom station is calling the main station, the indicator for the calling station flashes on the main
station’s indicator and a tone sounds while the intercom station operator is pressing the station’s calling switch.
Automatically selecting a single calling station
1. In the standby mode, press the PTT switch on the microphone to answer the call.
• The LH-3000 automatically switches to the calling station and the flashing indicator then lights steadily.
• If necessary, adjust listening volume with [LISTEN VOL] control.
2. After you have finished your conversation, press the [Hail Select] key to return to the standby mode.
Automatically selecting multiple calling stations
When receiving a call from more than one station, appropriate intercom station indicators flash and tone sounds.
1. In the standby mode, press the PTT switch on the microphone.
• When calls are received simultaneously, the low-number station will be selected first.
2. After you have completed your conversation, press the [Hail Select] key to return to the standby mode.
3. Press the PTT switch on the microphone again and the next low-number station will automatically be selected.
4. After finished all conversations, press [Hail Select] key to return to standby mode (“ALL” indicator lights).
Calling all intercom stations while an intercom voice is selected
1. Press and hold the [Hail Select] key.
2. Press the PTT switch on the microphone and speak into the microphone. All station indicators flash.
Manually selecting a calling station
1. Press the [Intercom Select] key until the indicator lights for the desired station.
2. Press the PTT switch on the microphone and answer the call.
3. Release the PTT switch to listen to the intercom station.
• Adjust listening volume with the [LISTEN VOL] control if necessary.
4. To call another station, select the next station with the [Intercom Select] key.
5. After you have finished all conversations, press the [Hail Select] key to return to the standby mode.
Hailing by Voice
1. Press the [Hail Select] key until the indicator lights for the desired horn speaker(s).
2. Press the PTT switch on microphone and speak. If required, adjust output power to the speaker(s) with the
[HAIL VOL] control; release the PTT switch and the Loud Hailer will switch to the listening mode, using the
speaker(s) as microphone(s). If necessary, adjust listening volume with the [LISTEN VOL] control.
3. Press the [Hail Select] key to return to the standby mode.