Uniden UM-525 manual Basic Operation, Turning the Radio On and Off, Selecting a Channel

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:

Uniden

UM525 DSC 16 Your MMSI is 123456789.

Uniden

UM525 16 Your MMSI is

not set.

•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:

TX

appears on the display. Release PTT to

•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, TX and the channel number blink 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.

TX

•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 19