Making A Voice Mayday Call; Setting The Volume; Setting The Squelch Level; Changing The Channel - Uniden UM415BK Owner's Manual

(see inside front cover)

Making a voice MaYDaY call

Turn the volume knob clockwise to increase the speaker volume; turn it counter-clockwise to

Setting the volume

decrease the volume.
The squelch feature reduces the level of static on the speaker by filtering out the background

Setting the squelch level

channel noise. At the lowest squelch level, the speaker plays all radio signals, including any
noise on the channel. Setting the squelch level higher filters out channel noise and lets only
actual radio transmissions through.
While listening to a channel, adjust the SQUELCH knob until the noise is filtered out and you
can only hear the transmission. If you switch to a channel with a lot of noise or with a weak
transmission, you may need to adjust the squelch level again.

nOte: setting the squelch level too high may prevent you from hearing weaker
transmissions. if you are having difficulty hearing a transmission, try setting the squelch
level lower.
Press and

Changing the channel

time. Press and hold
CHANNEL UP
To make a transmission, press and hold the microphone

Making a transmission

button when you're finished talking to let the other party respond.
To prevent stuck microphone problems or situations where
PUSH TO TALK
accidentally, the radio limits your talk time to 5 minutes in a single transmission. If you

talk for over 5 minutes continuously, the display shows RELEASE MIC BUTTON.
For the best sound quality, hold the microphone about two inches away from your mouth.
You cannot transmit while the radio is in weather mode or scan mode.

See the channel lists beginning on page 40 for a list of receive-only channels.


Strong signals Strong signals
Weak signals Weak signals
Noise Noise
No No
Squelch Squelch
briefly to scroll through the channels one channel at a
or
CHANNEL DOWN
CHANNEL UP CHANNEL DOWN
Medium Medium High High
Squelch Squelch Squelch Squelch
to quickly scroll through the channels.
PUSH TO TALK
button. Release the
is pushed
PUSH TO TALK
English
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