![background image](http://html.mh-extra.com/html/icom/ic-m421/ic-m421_instruction-manual_612795054.webp)
48
8
CONNECTIONS AND MAINTENANCE
New2001
■
Connections
q
DC POWER CONNECTOR
Connects the supplied DC power cable from this connector
to an external 12 V battery.
w
EXTERNAL SPEAKER JACK
Connects to an external speaker.
e
GPS RECEIVER JACK
Connects to a GPS receiver for position indication.
• A NMEA0183 ver. 2.0 or 3.01 (sentence formatters RMC, GGA,
GNS, GLL) compatible GPS receiver is required. Ask your dealer
about suitable GPS receivers.
r
ANTENNA CONNECTOR
Connects a marine VHF antenna with a PL-259 connector
to the transceiver.
CAUTION:
Transmitting without an antenna may dam-
age the transceiver.
CAUTION:
After connecting the DC power cable, GPS re-
ceiver jack and external speaker jack, cover the connector
and jacks with an adhesive tape as shown below, to pre-
vent water seeping into the transceiver.
Rubber vulcanizing tape
NMEA (+)
RCA
NMEA (–)
e
q
w
r
!IC-M421-3.qxd 06.5.26 1:44 PM Page 48 (1,1)
Summary of Contents for IC-M421
Page 1: ......
Page 42: ...re ush call or r Push ENT to transmit the polling request call to the se lected station ...
Page 61: ...55 12 TEMPLATE 11 12 Unit mm 164 78 149 61 6 ...
Page 62: ......
Page 63: ...57 28 3 14 2 111 2 60 6 Unit mm ...
Page 64: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan ...