‰  NOW 30 WPM  ‰
LIMIT THE TRANSMISSION TIME TO 3 MINUTES.  WE CHOSE TO BE CAUTIOUS AND
REDUCED OUTPUT TO 100 W.  A CONTEST ENVIRONMENT PRESENTS THE ULTIMATE
CHALLENGE TO A RECEIVER AND RTTY IS NO EXCEPTION.  PROPAGATION CONDITIONS
WERE DREADFUL DURING MUCH OF THE VOLTA CONTEST, SO STATIONS TENDED TO
CLUSTER ON 20 METERS.  PRESSING THE NAR NARROW SWITCH ENABLED THE 300 HZ
DSP IF FILTER, WHICH WAS EXACTLY WHAT THE DOCTOR ORDERED.  THE FTDX9000D
HAD NO PROBLEM SEPARATING INDIVIDUAL SIGNALS UNLESS THEY WERE RIGHT ON TOP
OF EACH OTHER.  USING WRITELOG SOFTWARE AND THE RIGEXPERT TINY INTERFACE,
WE WORKED ENOUGH STATIONS TO PROVE THAT THE FTDX9000D IS A SERIOUS
COMPETITION RADIO.  THE FRONT PANEL RTTY BUTTON IS STRICTLY FOR FSK.  FOR
THE UNINITIATED, FSK FREQUENCY SHIFT KEYING INVOLVES SENDING DATA, NOT
AUDIO, FROM THE COMPUTER TO THE TRANSCEIVER.  THE TRANSCEIVER, IN TURN,
GENERATES THE MARK SPACE RTTY SIGNAL DIRECTLY BY SHIFTING ITS OUTPUT
FREQUENCY.  TO TEST THE FSK FUNCTION WE USED A HOMEBREW FSK KEYING
‰  FROM PAGE 103  ‰
GIOTJJ/327 GM3PPE/333 HA5DA/340 HB9AFM/356 HB9MO/372 HK4CYR/331 I0JBL/336
I0SGF/336 I2VGW/326 I4ENO/326 I5EFO/336 IK2ECP/331 IK2WAL/326 IK4DRR/330
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ