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

Packet operation is easily accomplished on the FT-450 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-450 will auto-
matically 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-450 O
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
P
ACKET
DATA
IN
TNC
DATA OUT
GND
PACKET PTT
N.C.
DATA IN
)
(SQL Control).
S
UBCARRIER
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
O
PERATION
DATA
OUT PTT
)
F
REQUENCY
Page 73