Kenwood TS-990S - Manual (Page 133)

5-55
ASSISTING YOUR SMOOTH QSO 5
Index Contents
SELECTING BPSK OR QPSK
PSK communication is made in either BPSK mode or
QPSK mode. The BPSK mode is usually used, but the
error correction capability available in QPSK mode
enables a higher readability than that for BPSK.
[F1] [F7]
[FSK/PSK/REV]
1 Press [FSK/ PSK/ REV] to enter PSK mode.
2 Press [DECODER] (F3) to open the PSK Encode/
Decode screen.
3 Press [B/QPSK] (F2).
• Toggles between BPSK and QPSK. Toggles the display
between "BPSK" and "QPSK" on the right of the status bar.
• If [B/QPSK] (F5) is unavailable in the function key guide,
press [MORE] (F1). An alternate key guide will appear.
Note:
◆ In PSK63 mode, the operation is fixed to BPSK.
SELECTING PSK31 OR PSK63
The transceiver can operate in PSK31 and BPSK modes
as well as in PSK63, which offers double the transfer rate.
Follow the procedure below to select one of them.
[F1] [F7]
[FSK/PSK/REV]
1 Press [FSK/ PSK/ REV] to enter PSK mode.
2 Press [DECODER] (F3) to open the PSK Encode/
Decode screen.
3 Press [31/63] (F3).
• Toggles between BPSK31 and BPSK63 or QPSK31 and
BPSK63. Toggles the display between "31" and "63" on the
right of the status bar.
• If [31/63] (F3) is unavailable in the function key guide,
press [MORE] (F1). An alternate key guide will appear.
Note:
◆ PSK63 offers you the high speed transmission ratio; however, there
is less tolerance of incorrect phase in the carrier wave. Hence, you
need to accurately tune.