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4
2 INSTALLATION
ACCESSORY CONNECTIONS
FRONT PANEL
■ Headphones (PHONES)
Use headphones having 4 to 32 Ω impedance. You
can also use stereo headphones. When
headphones are used, no sound is heard from the
internal (or optional external) speaker. Use a 6.0 mm
(1/4") diameter, 2-conductor (mono) or 3-conductor
(stereo) plug.
■ Microphone (MIC)
To communicate in the voice modes, connect to the
MIC connector a microphone having an impedance
between 250 Ω and 600 Ω. Insert the connector
from your microphone fully, then screw the retaining
ring clockwise until snug. Compatible microphones
include the MC-43S, MC-60A, MC-80, MC-85, and
MC-90. Do not use the MC-44, MC-44DM, MC-45,
MC-45E, MC-45DM, or MC-45DME microphone.
REAR PANEL
■ External Speaker (EXT SP)
Ensure any external speaker used has an
impedance of 8 Ω. Use a 3.5 mm (1/8") diameter,
2-conductor (mono) plug. When an external speaker
is used, no sound is heard from the internal speaker.
WARNING!
Do not connect headphones to this jack. The high
audio output at this jack could damage your hearing.
■ Keys and Keyboards for CW Operation
(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 keyed output from
a Multimode Communications Processor (MCP) to
the KEY jack. The jacks mate with a 6.0 mm (1/4")
3-conductor plug and a 3.5 mm (1/8") 2-conductor
plug respectively. External electronic keyers or
MCPs must use positive keying to be compatible
with this transceiver. Use a shielded cable between
the key and the transceiver.
Note:
Due to the full-featured functionality of the internal
electronic keyer, you may decide it’s unnecessary to connect
both a paddle and another type of key unless you specifically
want to use a keyboard for CW. It’s recommended that you
become familiar with the internal keyer by reading
“ELECTRONIC KEYER” {page 32} before making your decision.
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SHIFT
TS-870S
Headphones
Microphone
iGND(STBY)
MICq
uGND(MIC)
yNC
t8 V(10 mA max)
PTTw
DOWNe
UPr
MIC connector (Front view)
External speaker
TS-870S
PaddleStraight key
Bug
Electronic keyer
MCP CW output
Ground +
Ground Dash Dot