Basic Operation; Turning The Radio On And Off; Selecting A Channel; Transmitting And Receiving - Uniden UM-525 Owner's Manual

Basic Operation

Turning the Radio On and Off

Press PWR to turn on the radio. The radio sounds a tone and a screen
similar to the following appears on the display if you have already set a
user MMSI.
Otherwise, if you have not set a user MMSI, a screen similar to the follow-
ing appears on the display. See "Setting Up a User MMSI" on Page 38.
Notes:
• If the radio is turned on for at least 3 seconds after you select a channel, it remembers the
last channel you tuned when you turn it off.
• If you hold down MENU while turning on the radio, the radio initializes the contrast control
(see "Adjusting the Contrast" on Page 39).
Press PWR again to turn off the radio.

Selecting a Channel

Rotate PUSH/SELECT to select a channel. Rotating PUSH/SELECT clockwise tunes
forward through the channels, while rotating PUSH/SELECT counterclockwise tunes
backward through the channels. The currently-tuned channel appears on the display.
Note: If A appears next to a channel number, this indicates the channel is in the simplex
mode on the ship station transmit side of an international duplex channel.

Transmitting and Receiving

To transmit, hold down PTT on the microphone.
receive. TX disappears.
Notes:
• If the radio is set to transmit at low power, you can change it so it transmits at high power
by pressing HI/LO/SCRAMBLER while transmitting.
• If you transmit continuously for longer than 5 minutes,
and the radio stops transmitting. This warns you that PTT might be stuck. To resume
transmitting, release PTT then press it again.
• The radio cannot transmit on Channel 15 (USA).
• If you hold down PTT while turning on the radio, the radio sounds an error tone and
and the channel number blink. No key except HI/LO/SCRAMBLER works.
• You cannot transmit while the radio is set to WX mode or Scan mode. If you press PTT
while the radio is set to Scan mode, the radio cancels that mode but does not transmit.
• The radio cannot transmit voice data on Channel 70. Only DSC data such as Distress
Call can be transmitted on Channel 70.
Basic Operation
Basic Operation
TX appears on the display. Release PTT to
Uniden
16
UM525 DSC
Your MMSI is
123456789.
Uniden
UM525
Your MMSI is
not set.
TX and the channel number blink
16
TX
19