Yaesu FT-857D Operating Manual page 25

F P
RONT
MIC Jack
Connect the supplied MH-31
SP-PH Switch
If you use earphones with this transceiver, move this switch to the "PH" position before
inserting the earphone plug into the SP/PH Jack, to prevent injury your ears.
METER Jack
This 3.5-mm 2-pin jack is used for connection to an analog meter (not
produced by Vertex Standard). Please refer to the MENU, No-060 and
No-061.
SP/PH Jack
This 3.5-mm, 2-pin jack provides variable audio output for an external
speaker (4 W ~ 16 W impedance) or earphones. The audio level varies
according to the setting of the front panel's AF knob.
Important Note: When you insert an earphone plug into this jack, the SP-PH slide
switch (located on the back side of front panel) MUST BE set to the "PH" position, to
prevent the possibility of injury to your ears.
M
FT-857 Operating Manual
C
ANEL ONTROL
Hand Microphone to this jack.
A8J
( F
B
AIN ODY RONT
PH SP
F
RONT
& S
CONTROL Jack
)
( B
P
ANEL ACK
WITCHES
SIGNAL GND
SIGNAL GND
CONTROL Jack
)
23