‰  NOW 30 WPM  ‰  TEXT IS FROM OCTOBER 2012 QST  PAGE 42‰

THE FIVE BYTE COMMAND WOULD BE 0X43 0X53 0X45 0X00 0X01.  THE DECIMAL
VALUES OF THE FIVE BYTE SEQUENCE WOULD BE 67 83 69 00 01.  THE OTHER
RELEVANT COMMANDS NEEDED TO CONTROL THE FT 817 FOR THIS PROJECT ARE TOGGLE
VFO, PTT ON AND PTT OFF.  LETS NOW TAKE A LOOK AT THE COMMAND SET THAT IS
CONVEYED TO THE FT 817 FROM SATPC32.  TABLE 3 IS A SAMPLE.  NOTICE THAT THE
PROGRAM COMMANDS THE TRANSCEIVER TO TOGGLE THE VFO AND THEN SENDS THE
FREQUENCY.  THERE ARE OTHER COMMANDS THAT SET THE OPERATING MODE.  THIS IS
WHY SATPC32 DOESNT PERFORM WELL WITH A SINGLE FT 817.  ALL OF THESE
COMMANDS ALSO COMPLICATE THE SOFTWARE FOR THE INTERFACE.  THE COMMAND SET
FOR AN OLDER YAESU RADIO, SUCH AS AN FT 736, IS SIMILAR TO THE COMMAND SET
FOR THE FT 817, BUT IT IS ALSO SIMPLER.  TABLE 4 IS A SAMPLE OF THE COMMAND
SET FOR THE FT 736.  IN THIS CASE, THE SATPC32 SOFTWARE ONLY SENDS THE
ALTERNATING TRANSMIT AND RECEIVE FREQUENCIES AND DOES NOT SEND COMMANDS TO
TOGGLE THE VFO THIS IS BECAUSE THE OLDER FT 736, AN EARLY SATELLITE CAPABLE
TRANSCEIVER, WAS FULL DUPLEX CAPABLE WITH TWO INDEPENDENT VFOS AND
THEREFORE DID NOT NEED TO BE TOGGLED.  YOU CAN SAMPLE THE COMMANDS COMING
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ