■Operating PSK

[TX] indicator [RX] indicator

Band keys

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[AF]

RTTY/PSK

DECODE

Main dial

F-3

Appears

TX buffer screen

FFT scope

RX contents screen

Water-fall

Vector tuning indicator

• Vector tuning indicator indication example

Tuned BPSK signal

Tuned QPSK signal

BPSK/QPSK idle signal Unmodulated signal

RECEIVE AND TRANSMIT

4

A high-quality DSP-based PSK31 encoder/decoder is built-in to the IC-7700. When connecting a PC keyboard (p. 2-6), PSK31 operation can be performed without PSK software installed on your PC.

If desired, you can also use your PSK software; consult the manual that comes with the software.

qPush a band key to select the desired band. w Push RTTY/PSK to select PSK.

•After PSK mode is selected, push and hold RTTY/PSK for 1 sec. to toggle between PSK and PSK-R modes.

•“PSK” or “PSK-R” appears.

ePush [F-3•DECODE] to display the decode screen.

• The IC-7700 has a built-in PSK31 decoder.

rTune to the desired signal with the main dial.

•The signal is properly tuned when the radiated lines in the vector tuning indicator narrow, as show in the exam- ple below.

•The radiated lines in the vector tuning indicator may be displayed sporadically.

•When a PSK signal is received, the water-fall display is activated.

•The water-fall display shows the signal condition within the passband and a vertical line appears when a PSK signal is received.

tPress [F12] of the connected keyboard to transmit.

• [TX] indicator lights red.

yType from the connected keyboard to enter the message that you want to transmit.

•The typewritten contents are indicated in the TX buffer screen and transmitted immediately.

•The text color will be changed when transmitted.

•Press one of [F1]–[F8] to transmit the TX memory con- tents.

uPress [F12] of the keyboard to return to receive.

✔For your convenience

The transmission contents can be typed before being transmitted.

qPerform the steps q to r above.

wType from the connected keyboard to enter the

message that you want to transmit.

• The message is shown in the TX buffer screen.

ePress [F12] of the connected keyboard to transmit the message.

•The color of displayed text, in the TX buffer screen, will be changed when transmitted.

•To cancel the transmission, press [F12] twice.

rPress [F12] of the keyboard to return to receive.

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