Ritron j-u410 Mode D'Emploi

Page de 32
21 Section 
4 
Operation 
 
 Operation 
 
 
 
Once installed, operating the Loudmouth
 radio receiver requires no human 
contact.  Portable, base station or mobile 2-way radios can deliver voice messages 
directly to a PA speaker with a simple press of the PTT button for either live or 
recorded playback.  This section describes the subtle differences in operation for 
various Loudmouth
™ 
options and installations.  
 
 
4.1 
Basic Operation 
Basic operation is defined as a Loudmouth
 receiver programmed on a dedicated radio frequency with a QC or 
DQC code.  The receiver is also programmed for 50% volume and a pre-announce tone. 
1.  Move to an area that is away from the Loudmouth
 speaker to prevent feedback.   
2.  Be sure the microphone on the calling radio is pointed away from the Loudmouth
 speaker. 
3.  Set the portable, base station, or mobile radio to the Loudmouth
 channel. 
4.  Monitor the channel before transmitting to be sure there are no other radio users on the Loudmouth
 
frequency. 
5.  Press and hold the PTT button and pause for about 1 second, allowing the pre-announce tone to be heard. 
6.  Speak into the radio microphone to broadcast your message over the Loudmouth
 speaker.  If other radios 
are operating on the Loudmouth
 channel they will also hear your message. 
7.  Release the PTT button when your message is complete. 
8.  Return the portable, base station, or mobile radio to the normal operating channel. 
 
 
4.2 
Selcall Paging 
To access the Loudmouth
 the 2-way radio must be programmed to send the correct Selcall code every time the 
PTT is pressed.  The user simply presses the 2-way radio’s PTT and speaks while on the Loudmouth
 channel.  
Only 2-way radios programmed to send the correct Selcall code on the Loudmouth
 channel can access the 
Loudmouth
 wireless PA speaker.  
1.  Move to an area that is away from the Loudmouth
 speaker to prevent feedback.   
2.  Be sure the microphone on the calling radio is pointed away from the Loudmouth
 speaker. 
3.  Set the portable, base station, or mobile radio to the Loudmouth
 channel. 
4.  Monitor the channel before transmitting to be sure there are no other radio users on the Loudmouth
 
frequency. 
5.  Press and hold the PTT button. 
6.  Wait until the entire Selcall code has been sent, and then an additional 1 second for the pre-announce tone. 
7.  Speak into the radio microphone to broadcast your message over the Loudmouth
 speaker.  If other radios 
are operating on the Loudmouth
 channel they will also hear your message. 
8.  Release the PTT button when your message is complete. 
9.  Return the portable, base station, or mobile radio to the normal operating channel. 
 
With Selcall Paging operation: 
• 
Selcall paging can be used in conjunction with QC or DQC for added security.  The 2-way radio and the 
Loudmouth
 receiver must be programmed for the same QC or DQC code.