Front Panel Controls & Switches; Key Jack - Yaesu FT dx 1200 Operating Manual

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ront anel
[ POWER ] Switch
Press and hold in this switch for one second to turn
the transceiver on. Similarly, press and hold in this
switch for one second to turn the transceiver off.
[ TUNE ] Switch
This is the on/off switch for the FT
matic Antenna Tuner.
Pressing this button momentarily places the antenna
tuner in line between the transmitter final amplifier
and the antenna jack (The "TUNER" icon will ap-
pear in the display). Reception is not affected.
Pressing and holding in this button for two seconds,
while receiving in an amateur band, activates the
transmitter for a few seconds while the automatic
antenna tuner rematches the antenna system imped-
ance for minimum SWR. The resulting setting is au-
tomatically stored in one of the antenna tuner's 100
memories for instant automatic recall later when the
receiver is tuned near the same frequency.
Pressing this button momentarily, while the Tuner is
engaged, will take the Automatic Antenna tuner out
of the transmit line.
Page 16
c
ontrols
1200's Auto-
DX
& s
witches
n :
ote
When the Automatic Antenna Tuner is tuning itself,
a signal is being transmitted. Therefore, be certain
that an antenna or dummy load is connected to the
selected antenna jack before pressing and holding in
the [ TUNE ] switch to start antenna tuning.

KEY Jack

This 1/4-inch, 3-contact jack accepts a CW key or
keyer paddles (for the built-in electronic keyer),
or output from an external electronic keyer. Pinout
is shown on page 15. Key
DC, and key down current is 4 mA. This jack may
be configured for keyer, "Bug",
computer keying interface operation via Menu item
"019 F CW KEYER" (see page 113). There is anoth-
er jack with the same name on the
may be configured independently for Internal Keyer
or pseudo-straight-key operation.
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ote
You cannot use a 2-contact plug in this jack (to do so
produces a constant "key down" condition).
F T 12 00 O
DX
up voltage is +3.3 V
"straight key", or
rear panel, and it
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peraTing anual