‰  NOW 40 WPM  ‰  

WITH YOUR RASPBERRY PI MODEL B OR B TO MAKE A BASIC TRANSMITTER.  THE
TRANSMITTER IS ON THE LEFT, AND THE RASPBERRY PI ON THE RIGHT IN THE
ACCOMPANYING PHOTO.  THE SKYPIS FUNCTION IS MAINLY TO PROVIDE POWER
AMPLIFICATION AND HARMONIC FILTERING.  AFTER BUILDING THE KIT, WE FOUND THE
CW KEYING WAVEFORM HAD A VERY SHORT RISE AND FALL TIME, PRODUCING EXCESSIVE
KEY CLICKS.  RADWAV SUPPLIED A REPLACEMENT BOARD THAT SHOWED GOOD RISE AND
FALL TIMES, AND THE CLICKS ARE GONE FIGU

16R7 TO 150.  LETS SAY AN SWR OF UP TO 3 1.  THIS IS OFTEN USEFUL FOR
TUNING A RESONANT ANTENNA AT THE BAND EDGES, FOR EXAMPLE.  IN CONTRAST,
SOME EXTERNAL WIDE RANGE TUNERS CAN HANDLE AN SWR OF 10 1 OR HIGHER, MAKING
THEM USEFUL FOR ANTENNAS WITH TUNED FEEDERS OR RANDOM SINGLE WIRES.
KENWOOD SUPPORTS LONG SINGLE WIRES WITH THE OPTIONAL AT 300 ANTENNA TUNER,
WHICH PLUGS INTO A DEDICATED REARPANEL CONNECTOR ON THE TRANSCEIVER.  IN
USE, I FOUND THAT THE TUNER RATINGS WERE CONSERVATIVE.  I FOUND SOME
ANTENNA CONFIGURATIONS WITH SWRS OF 4 1 OR 5 1 USABLE WITH THE INTERNAL
TUNER, BUT IT DEPENDS ON THE ACTUAL IMPEDANCE ENCOUNTERED.  UNLIKE SOME
TUNERS THAT TRY TO FIND A MATCH AND THEN JUST GIVE UP IF THE ANTENNA LOAD
IS OUT OF RANGE, THE 590SGS TUNER CHECKS FIRST, AND THEN SENDS SWR IN MORSE
IF IT CANT FIND A MATCH.  VGS 1 VOICE GUIDE WE PURCHASED THE OPTIONAL VGS 1
VOICE GUIDE AND STORAGE UNIT.  THIS INTERNAL OPTION PROVIDES TWO FUNCTIONS.
THE VOICE GUIDE, WHICH CAN BE DISABLED FOR THOSE WHO DONT NEED IT,
ANNUNCIATES ALL SWITCH ACTIONS AND FREQUENCY CHANGES A REAL PLUS FOR THOSE
WITH VISION DIFFICULTIES.  THE STORAGE UNIT FUNCTION THINK VOICE KEYER

DIGITAL MODES THE TS 590SG SUPPORTS DIGITAL MODES SUCH AS RTTY FSK OR AFSK,
PSK31, OR JT65.  EXCEPT FOR FSK RTTY, MOST OPERATORS USE AUDIO TONES
GENERATED BY A PC PROGRAM AND SOUND CARD TO DRIVE THE TRANSCEIVER IN SSB
MODE ON HF OR FM ON VHF.  THE TS 590SGS USB PC TO RADIO INTERFACE CAN
SIMULTANEOUSLY HANDLE AUDIO AND OTHER PC TO 590SG CONTROL FUNCTIONS, SO NO
ADDITIONAL CABLES ARE NECESSARY.  YOU CAN USE THE USB INTERFACE FOR FSK
DATA AND ALSO TO SEND AND RECEIVE AUDIO.  USING THE USB INTERFACE FOR
DIGITAL MODES REQUIRES THE INSTALLATION OF THE VIRTUAL COM PORT DRIVER
DESCRIBED EARLIER AND THE ARUA 10 USB AUDIO CONTROLLER SOFTWARE, BOTH
AVAILABLE FOR DOWNLOAD FROM KENWOOD.  ALTERNATELY, YOU CAN DO DIGITAL MODES
THE TRADITIONAL WAY BY CONNECTING AUDIO IN AND OUT FROM A SOUND CARD
DIRECTLY TO THE ACC2 CONNECTOR.  THE ACC2 CONNECTOR AUDIO LEVELS ARE
INDEPENDENT OF THE FRONT PANEL CONTROLS.  THOSE RTTY OPERATORS WHO PREFER
TRADITIONAL DIRECT FSK CAN USE A RTTY KEY INPUT CONNECTION ON THE ACC2
CONNECTOR.  THE ACC2 CONNECTOR INCLUDES A PTT CONNECTION THAT ALSO MUTES
THE MIC IF ENABLED, AVOIDING THE INADVERTENT TRANSMISSION OF YOUR VOICE OR
A BARKING DOG WHILE SENDING DATA.  A DEDICATED SQUELCH OPEN/CLOSE FUNCTION
IS ALSO PROVIDED.  ANTENNA TUNER THE TS 590SGS STANDARD INTERNAL ANTENNA
TUNER IS WHAT I CALL A TRIMMING TUNER, WITH A MATCHING RANGE SPECIFIED AT
‰  END OF 40 WPM TEXT  ‰  QST DE W1AW  ƒ