Section 4
Operation
26
4.7
Loudmouth
®
Options
Certain Loudmouth
®
options affect operation as follows:
Pre-Announce Tone
With this feature enabled the Loudmouth
®
will sound a short tone prior to each broadcast to notify listeners that a page is
forthcoming.
One Speaker / Two Speakers
Set the Loudmouth
®
for one or two speaker operation to set the correct audio output level from the audio amplifier.
NOTE: This feature is not required to drive 2 speakers on radios with firmware 23.05 or higher, or serial number
A100119000 or higher.
Relay Enable
For radios equipped with a relay, set this option for relay closure when the Loudmouth
®
receives a valid signal. The relay will
remain closed as long as a signal is received. If Record and Play is enabled, the relay will close as soon as a signal is
received and remain closed throughout any Record and Play Delay and Recorded Message Replay.
Record and Play Delay
The playback of a received, recorded message is delayed for the Record and Play Delay time whenever a valid incoming
message is received. If the recorded message is longer than the Record and Play Delay time the message plays back at the
conclusion of recording. For this feature to work Record and Play must be enabled.
Recorded Message Replay
Recorded messages are repeated concurrently for the number of times programmed. For this feature to work Record and
Play must be enabled.
Field Programming Enable
With this feature enabled the radio can be programmed via the display and buttons on the radio, without the need for the PC
programmer software. Disable this feature to prevent programming in the field and allow only PC programming.
4.8
How to Minimize Feedback
Feedback is the result of the Loudmouth
®
speaker audio getting back into the microphone of the radio being used to access the
Loudmouth
®
. This is a problem with the calling radio, not the Loudmouth
®
receiver. Although the Loudmouth
®
is not intended
to be used in the same area as the calling radio, steps can be taken to minimize the feedback effect.
Reduce Loudmouth
®
speaker volume
Do not set the Loudmouth
®
volume any high than is necessary to cover the intended area.
Use multiple speakers
The use of multiple speakers means you don’t have to cover as large an area with each speaker, consequently, speaker
volume can be reduced.
Maintain distance between the calling radio and the Loudmouth
®
speaker
In general, the calling radio should be at least 50 feet away from the speaker when the Loudmouth
®
is set for 50% volume.
The necessary distance increases if the volume is turned up and decreases if the volume is turned down.
Make sure the radio microphone is turned away from the speaker
You do not want the speaker pointing directly into the microphone. Using your hand to shield the microphone can also
reduce feedback.
Use a noise canceling microphone
Equip your calling radio with an optional noise-canceling microphone.
Record and Play feature eliminates feedback
The Record and Play feature completely eliminates feedback by recording your message and playing it back
after you have finished sending it to the Loudmouth
®
receiver. See page 18 to enable the Record and Play
operation.
The calling radio is not transmitting while the message is broadcast, so speaker audio cannot get into the
calling radio microphone.
