Icom IC-7700 - Manual (Page 75)

4-23
D D Functions for the PSK decoder indication
q Push a band key to select the desired band.
w Push to select PSK.
• After PSK mode is selected, push and hold
for 1 sec. to toggle between PSK and PSK-R modes.
• “PSK” or “PSK-R” appears.
e Push [F-3•DECODE] to display the decode screen.
• When tuned into a PSK signal, decoded characters are
displayed in the RX contents screen.
r Push [F-2•HOLD/CLR] to freeze the current screen.
• “ ” appears while the function is in use.
• Push [F-2•HOLD/CLR] again to release the function.
t Push and hold [F-2•HOLD/CLR] for 1 sec. to clear
the displayed characters.
•
“ ” indicator disappears at the same time when the
hold function is in use.
y Push [F-3•AFC/NET] to turn the AFC function ON.
• “ ” appears.
• If a PSK signal is received within the AFC tuning range,
the decoder automatically tunes into the signal and the
offset frequency is displayed.
• The AFC tuning range is set to ±15 Hz as the default.
Optional ±8 Hz setting is available in PSK decode set
mode. (p. 4-26)
u Push [F-3•AFC/NET] again to turn the NET function
ON.
• “ ” appears additionally.
i Push and hold [F-3•AFC/NET] for 1 sec. to add the
offset frequency to the displayed frequency.
o Push [F-7•WIDE] to toggle the PSK decode screen
size from normal and wide.
• S/RF meter type during wide screen indication can be
selected in display set mode. (pgs. 3-11, 12-10)
!0 Push to close the PSK decode screen.
D D Setting the decoder threshold level
Adjust the PSK decoder threshold level if some char-
acters are displayed when no signal is received.
q Call up the PSK decode screen as described
above.
w Push [F-5•ADJ] to select the threshold level setting
condition.
e Rotate the main dial to adjust the PSK decoder
threshold level.
• Push and hold [F-6•DEF] for 1 sec. to select the default
setting.
r Push [F-5•ADJ] to exit from the threshold level set-
ting condition.
EXIT/SET
NET
NOTE: The AFC function may not tune the signal
properly when a weak PSK signal is received.
AFC
HOLD
HOLD
RTTY/PSK
RTTY/PSK
• AFC/NET indications
“AFC” and “NET” indicators Offset frequency
RTTY/PSK EXIT/SET
F-7
WIDE
F-3
AFC/NET
F-2
HOLD/CLR
4
RECEIVE AND TRANSMIT