     ------------ OH2GI-HAM system -------------

     PSK31 Mode for SCS PTC-II

     SCS PTC-II Firmware Version 2.7

     Select text-buffer in QSO-screen by Alt-F5 and S for CW.S file

     Online-help updated for PSK31 mode (Alt-H + page J)


     Hot-keys in MAIN or QSO screens:
     ===============================

     Alt-P.....Command to activate the PSK31 mode   (PSKTerm)
               The alpha-numeric display shows "PSK31 1300", where the number
               1300 is the receive carrier frequency used. (the center
               frequency of the audio signal). The audio carrier frequency for
               receive and transmit are calculated using the settings for
               MARK-frequency+SPACE-frequency/2. If one has MARK=1400 Hz and
               SPACE=1200 Hz, then the carrier frequency is 1300 Hz. A special
               command for the PSK31 AF-carrier frequency is thus not required.
               The transceiver connected to the PTC-II can operate with the
               same settings as for PACTOR or AMTOR etc. The PSK31 carrier,
               when correctly tuned, lies exactly in the middle of the IF
               filter passband.


     F1........Erases the Transmit (or type-ahead) buffer.

     F10.......Cycles between the operating modes  DBPSK, DQPSK and inverted
               DQPSK (only in QSO-screen)

     Alt-F8....Switches the Squelch between normal operation and continuously
               open.

     Alt-F9....The Receive-carrier frequency is increased by 1 Hz.
                 (Also Ctrl-L in QSO-screen)

     Alt-F10...The Receive-carrier frequency is decreased by 1 Hz.
                 (Also Ctrl-K in QSO-screen)

     Ctrl-N....Switches the "NET" operation off or on again.
                 (only in QSO-screen)

     Ctrl-F....Sets the receive and transmit carrier frequency to the default
               value (MARK+SPACE/2).  (only in QSO-screen)


     Refer to PSK PTC-II manual for more information.


     -------------------COMMANDS FOR RTTY -----------------------

     SERBaud 9600 (auto)

     TOnes   0 Low tones (1200/1400 Hz) (default)
             1 High tones (2300/2100 Hz)
             2 Freely adjustable tones - definable with Mark - Space commands

     MARk    default 1400  (note TOnes 2)

     SPAce   Default 1200  (note TOnes 2)

     TR      0 TX and RX shift normal (default)
             1 Only RX shift reverse
             2 Only TX shift reverse
             3 TX and RX shift reverse


     PSKAmpl Set the AF output (Pactor-II ARQ and unproto)
             (default = 140 millivolt p-p) (see FSKamp)

     FSKAmp  Set the AF output (RTTY, PACTOR, AMPTOR etc.)
             (default 60 millivolt p-p)

     SQuelch Default 45 (0 - 100 for the RTTY)

     Term    0 Simple terminal mode

     USOs    0 Disabled (default)
             1 Enabled                                                    
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