Basic Setup; Psk Operation - Yaesu FT-450D Operation Manual

PSK O
PERATION
PSK operation is easily accomplished on the FT-450D by connecting your TNC (Terminal Node Controller) to the trans-
ceiver, as in the illustration.
1. Press the [ V/M/MW ] button once, if necessary,
to enter the "Memory" mode.
2. Memory channels "US5-001" through "US5-005"
are pre-programmed at the factory. The permit-
ted frequencies in the 5 MHz band.
3. Press the [ MODE ] or [ MODE ] button to se-
lect the SSB mode.
4. When the "transmit" command is received from
the TNC, the FT-450D transmitter will be en-
gaged. The microphone input is disabled auto-
matically when transmitting the PSK signal.
Likewise, the TNC "receive" command 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 PSK operation via the rear panel DATA
jack, the front panel MIC jack is cut off, so you
won't have a "live microphone" problem during
data operation.
Set the PSK sub carrier frequency of the TNC to
1.5 kHz.
Page 76
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 )
B
ASIC
DATA DATA
OUT
IN
TNC
DATA OUT
GND
PACKET PTT
N.C.
DATA IN
(SQL Control).
S
ETUP
N :
If you anticipate making data transmissions of longer than
a few minutes, we recommend that you reduce the trans-
mitter power to 1/2 ~ 1/3 of its normal maximum via Menu
Item " ".
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
FT-450D O
PTT
M
PERATION ANUAL