7
1 INSTALLATION
PADDLE KEY
EXT.SP DATA REMOTE
COM
MIC PANEL
+GND
GND dash dot
1234
Paddle Straight key
Bug key
Electric keyer
MCP CW output
Headphones
MJ-88
(Opt.)
External speaker (Opt.)
Microphone
w/ 8-pin metal plug
(Opt.)
ACCESSORY CONNECTIONS

TX/ RX UNIT

■Microphone (MIC)
Connect a microphone having an impedance
between 250 and 600 Ω. As for the supplied
microphone, fully insert the modular connector into
the MIC jack until the locking tab clicks. You can
still utilize 8-pin metal type plug microphones,
such as MC-43S, MC-47, and MC-60A with the
optional MJ-88 adaptor (optional) if necessary.
However, do not use the MC-44, MC-44DM,
MC-45, MC-45E, MC-45DM, MC-45DME, or
MC-53DM condensor-type microphones.
■External Speaker (EXT.SP)
On the front panel of the TX/ RX unit, there is an
external speaker jack. If an external speaker is
connected to EXT.SP jack, the built-in speaker on
the back of the Remote Control panel will mute.
Use only external speakers with an impedance of
4 to 8 Ω (8 Ω nominal). The jacks accept only
3.5 mm (1/8") diameter, 2-conductor (mono) plugs.
•The “ ” projection indicates the external
speaker jack.
Note:
Do not connect headphones to this jack. The high audio
output of this jack could damage your hearing.
■Keys for CW (PADDLE and KEY)
For CW operation using the internal electronic
keyer, connect a keyer paddle to the PADDLE
jack. For CW operation without using the internal
electronic keyer, connect a straight key,
semi-automatic key (bug), electronic keyer, or the
CW keying output from a Multi-mode
Communications Processor (MCP) to the KEY
jack. The PADDLE and KEY jacks mate with a
3.5 mm (1/8") 3-conductor plug and a 3.5 mm
(1/8") 2-conductor plug respectively. External
electronic keyers or MCPs must have a positive
keying output to be compatible with this
transceiver. Use a shielded cable between the
key and the transceiver.
•The “•” projection indicates the key jack and
the “••” projection indicates the paddle jack.
Note:
Due to the functionality of the internal electronic keyer, you
may find it unnecessary to connect both a paddle and another
type of keyer unless you want to use a PC-based keyer for CW.
Refer to the “ELECTRONIC KEYER” section {page 39} to
become familiar with the internal keyer.

REMOTE CONTROL PANEL

■Headphones (PHONES)
Connect monaural or stereo headphones having a
4 to 32 Ω impedance. This jack accepts a
3.5 mm (1/8") diameter, 2-conductor (mono) or
3-conductor (stereo) plug. After connecting the
headphones, you will hear no sound from the
internal (or optional external) speaker.