Yaesu FT DX 9000D - COMPUTER AIDED TRANSCEIVER, Руководство по эксплуатации

Страница: 102 / 156

Page 100 FT
DX
9000D O
PERATION
M
ANUAL
The powerful CW operating capabilities of the FT
DX
9000D include operation using both an electronic keyer paddle and
a “straight key” or emulation thereof, as is provided by a computer-based keying device.
S
ETUP FOR
S
TRAIGHT
K
EY
(
AND
S
TRAIGHT
K
EY EMULATION
)
O
PERATION
Before starting, connect your key line to the front and/or rear panel KEY jack, and be sure the KEYER switch on the
left side of the front panel is turned off for now.
CW M
ODE
O
PERATION
1. Press the CW mode switch
(#
) to engage CW operation.
H
The operating mode is selected us-
ing the MODE switches to the left
of the Main Tuning Dial (# ),
and the VFO (A or B) to which the
selection is applied is selected by
pressing the A or B switch
above the Mode keys. Please be sure
you are engaging CW on the right
VFO.
H
The LED associated with your VFO
and (CW) Mode selection will light up.
H
If you press the CW key once more, after initially selecting
CW, you will engage the “CW Reverse” mode (see page 104),
whereby the “opposite” sideband injection is used, compared
to the “normal” sideband. The CW LED will blink for three
seconds if you select CW Reverse.
2. Rotate the Main Tuning Dial (# )to select the de-
sired operating frequency.
3. Press the BK-IN/SPOT key
(#
) momentarily to engage au-
tomatic activation of the transmit-
ter when you close the CW key.
The LED imbedded in the BK-
IN/SPOT switch will light up.
H
When you close your CW key, the transmitter will automati-
cally be activated, and the CW carrier will be transmitted.
When you release the key, transmission will cease after a brief
delay; the delay time is user-programmable, per the discus-
sion on page 105.
H
As shipped from the factory, the FT
DX
9000D TX/RX system
for CW is configured for “Semi-break-in” operation. How-
ever, using Menu item “MODE-CW 047 CW BK-IN,” you
may change this setup for full break-in (QSK) operation,
whereby the switching is quick enough to hear incoming sig-
nals in the spaces between the dots and dashes of your trans-
mission. This may prove very useful during contest and traf-
fic-handling operations.
4. Operation using your CW key may now proceed.
Terminology
Semi-break-in
This is a pseudo- “VOX” mode used on CW, whereby the closure of the CW key will engage the transmitter, and
release of the key will allow the receiver to receive after a short delay. No signals will be heard between the spaces
between dots and dashes (unless the sending speed is extremely slow).
Full break-in
Full break-in (Also known as “Full QSK”) involves very fast switching between transmit and receive, such that incom-
ing signals may be heard between the dots and dashes as you send them. This allows you to hear a station that suddenly
starts transmitting on your frequency, while you are in the midst of a transmission.
CW switch
Main Tuning Dial BK-IN switch
Advice
You can monitor your sending by pressing the
MONI key (# ), and adjust the MONI control
(# ) for a comfortable listening level on the CW
sidetone.
If you set the VOX (# ) and BK-IN switches
(# ) to Off, you may practice your sending without
having the signal go out over the air (sidetone only).