Parts Of The Radio; Table 2 - Rear Panel Connector Functions - Uniden UM425 Owner's Manual

Getting Started

Parts of the radio

Antenna
connector
(SO238)
ANTENNA

Table 2 - Rear panel connector functions

Connector
Antenna connector
Power connector
Accessory connector GPS receiver, GPS
Heat sink
Connects to
External VHF antenna with
a male PL259 (SO238)
connector and 50 Ω
impedance.
Minimum 4 ft, 3dB rated
antenna for sailboats, 8 ft, 6
dB rated for power boats.
Nominal 13.8 VDC power
supply with negative ground
(11.7 VDC to 14.3 VDC)
(Red wire +, black wire -).
chartplotter, external speaker,
external PA speaker.
E-7
Accessory
connector
13.8V DC
For details, see
Connecting the radio,
page 44.
Connecting the radio,
page 44.
Connecting accessories,
page 46.
Power
connector