Packet Operation; Packet Setup; (Including Subcarrier Frequency) - Yaesu FT-450D Operation Manual

Packet operation is easily accomplished on the FT-450D by connecting your TNC (Terminal Node Controller) to
the transceiver, per the illustration.
P
ACKET
Before operation can commence, change Menu Item
"D TYPE" setting to "USER-L" (for LSB-Based Packet
Operation) or "USER-U" (for USB-Based Packet Op-
1. Press the [ MODE ] / [ MODE ] buttons several
times to indicate both the "
(for LSB-Based Packet) or the "
icons (for USB-Based Packet) on the display. En-
gage the Packet operation.
2. When the "transmit" command is received from
the TNC, the transmitter of the FT-450D will au-
tomatically be engaged. Likewise, the command
to return to receive will cause the radio to revert
to the receive mode.
A :
There is no adjustment of the DATA input level
and DATA output level of the DATA jack on the
rear panel; please make any needed level ad-
justments at the TU side.
During Packet operation via the rear panel's DATA
jack, the front panel MIC jack is cut off, so you
won't have a "live microphone" problem during
data operation.
FT-450D O
PERATION
ANT
INPUT
DC 13.8V
2 2A
EXT
GND
SPKR
DATA TUNER LINEAR CAT
DATA JACK
DATA IN (Pin 1)
GND (Pin 2)
DATA PTT (Pin 3)
FSK IN (Pin 4)
DATA OUT (Pin 5)
)
SQL OUT( Pin 6
( I
S
ETUP NCLUDING
B
ASIC
" and " " icons
" and " "
M
ANUAL
P O
ACKET
DATA DATA
IN OUT
TNC
DATA OUT
GND
PACKET PTT
N.C.
DATA IN
(SQL Control).
S F
UBCARRIER REQUENCY
eration), to configure your radio for the data mode to
be used.
S
ETUP
N :
If you anticipate making data transmissions of longer
than a few minutes, we recommend that you reduce
the transmitter power to 1/2 ~ 1/3 of its normal maxi-
mum via Menu Item "RFPOWER".
Q P :
DATA Jack Specifications
DATA IN
Input Level: 60 mVp-p
Input Impedance: 600 Ohms
DATA OUT
Fixed level, does not respond to setting of
[ AF GAIN ] or [ SQL/RF GAIN ] knob.
Output Level: 500 mVp-p
Output Impedance: 600 Ohms
PERATION
PTT
)
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