Adaptation Of Data Communication; Adaptation Of Rtty Communication; Adaptation Of Vox Operation; Procedural Uses - Yaesu FT-450 User Manual

YAESU HF/50 mHz Transceiver FT-450 User's Manual
7.8

Adaptation of Data communication

D DISP – default 0 Hz out of
DATA mode operation display offset for USER-L or USER-U.
D TYPE – default RTTY out of
Define DATA mode.
DIG VOX – default OFF out of OFF and 1 ~ 100
Set the VOX input level for DATA mode.
7.9

Adaptation of RTTY communication

RTY SFT – default 170 Hz out of
Set the frequency shift for FSK RTTY operation.
RTY TON – default 2125 Hz out of 1275 Hz and 2125 Hz
Set the mark tone for RTTY operation.
RTYRPOL – default NOR out of NOR and REV
Set the mark or space polarity for RTTY reception. NOR = normal and REV = reverse.
RTYTPOL – default NOR out of NOR and REV
Set the mark or space polarity for RTTY transmission.

7.10 Adaptation of VOX Operation

VOX DLY – default 500 milliseconds out of
Set the "hang time" for the VOX circuitry.
VOXGAIN – default 50 out of 1 ~ 100
Set the gain of the VOX circuit. This may be done while transmitting.
8

Procedural Uses

I have included some operational notes to show how I currently use the system. It is best to start
with the shift centered, ATT off, IPO off, the RF gain full on (unless you are doing scanning)
and the AF gain so the noise is not to high.
8.1

CW Setup

No, I am not going to repeat the whole manual here. There are too many permutations and
combinations. I am assuming you have adapted the CW parameters the way you want them. The
first time, for straightforward communication:
-3000 ~ +3000 Hz
RTTY, USER-L, or USER-U
170, 200, 425, 850 Hz
100 ~ 3000 milliseconds in 100 msec increments
- 25 -
NOR = normal and REV = reverse.