Filter
Top Products
31Uniden MHS550 Radio Owner’s Manual
Channels 75 and 76.
Transmitting
To transmit, follow the steps below.
Press ▲ or ▼ to select a channel. The selected
channel number appears on the display along with
the country label, and the selected power setting.
Press the PTT switch. TRANSMITTING appears at
the bottom of the screen and remains displayed as
long as you hold down the PTT switch.
Notes:
You cannot transmit on the weather frequencies. They
are designated ‘receive’ only. An error tones sounds when
you press PTT and a weather channel is selected. The
displayed weather channel number ashes, and RELEASE
PTT KEY is displayed to remind you that you cannot
transmit on the selected channel.
You cannot transmit on Channel 70, and 15 in the USA.
Channel 70 is reserved for digital data only while channel
15 is reserved for receive only. If you attempt to transmit,
RELEASE PTT KEY appears in the LCD message line.
Do not hold down PTT while turning on the radio. An error
tone sounds and the same message appears.
Pressing PTT halts Scanning. For Scanning and the
settings for Dual and TripleWatch, see Page 51. If the
channel has no carrier, the rst press of PTT takes the
radio out of scan mode. Press PTT to activate transmitting.
Continuous transmitting is limited to 5 minutes by
regulations. After this time, an error tone sounds and
RELEASE PTT KEY displays. After you release PTT,
pressing PTT again restarts the 5-minute time interval.
1.
2.
•
•
•
•