Section 4
Operation
30
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.
Relay Enable
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 Delay Message Playback and Repeat Message Playback. The relay can also be enabled whenever a NOAA
Weather Alert is received.
Delay Message Playback
The playback of a received, recorded message is delayed for the Delay Message Playback time whenever a valid incoming
message is received. Loudmouth
®
can also be set to start playback as soon as the received incoming message is complete
by setting Record and Play.
Repeat Message Playback
Recorded messages are repeated concurrently for the number of times programmed with 3 seconds between each playback.
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 higher 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 Section 3.6 Field Program Advanced
Feature Codes 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.
