‰  NOW 30 WPM  ‰  TEXT IS FROM DECEMBER 2008 QST  PAGES 43, 44 AND 74  ‰

EFFECT ON A RAPIDLY CHANGING SSB SIGNAL.  YOU CAN SELECT FROM 10, 20 AND 30
DB ATTENUATION LEVELS, WHICH IS USEFUL WHEN YOURE TUNING PARTICULARLY
STRONG SIGNALS.  YOU CAN ALSO ACTIVATE A FRONT END PRESELECTOR, AS WELL AS
A RECEIVE PREAMPLIFIER.  THE PREAMP ONLY HAS ABOUT 2 DB GAIN, SO ITS
CONTRIBUTION ISNT VERY NOTICEABLE.  YOU CERTAINLY HEAR THE EFFECTS OF THE
ATTENUATORS AS YOU SWITCH THEM IN AND OUT, BUT YOU DONT SEE THE EFFECTS
REFLECTED IN THE S METER, WHICH DISPLAYS THE ACTUAL RECEIVED SIGNAL LEVEL
REGARDLESS OF ATTENUATOR OR PREAMPLIFIER SELECTION.  THE RECEIVER CAN ALSO
BE SET TO DISPLAY THE RECEIVED SIGNAL LEVEL IN DBM, AND READINGS WERE
WITHIN 1 DB OF THE ARRL LABS CALIBRATED SIGNAL GENERATOR.  I USED THE
SPECTRAL SIGNAL DISPLAY DURING MOST OF MY TESTS.  HOWEVER, A COLORFUL
WATERFALL DISPLAY IS ALSO AVAILABLE FIGURE 5.  WHILE TUNING THROUGH A WIDE
SWATH OF SIGNALS WITH EITHER DISPLAY, IT WAS HANDY TO USE THE SOFTWARE
MARKER FUNCTION TO LABEL THE AMPLITUDES AND FREQUENCIES OF INTERESTING
‰  FROM PAGE 74  ‰
CT Orange Co ARC W2HO 945 2 65 3,300 ENY Orange Park ARC K4BT 872 2 53
3,238 NFL Alcorn Co ARES W4TX 631 2 40 3,236 MS Nixa AR N0A 731 2 28 3,210
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ