‰  NOW 30 WPM  ‰   TEXT IS FROM JANUARY 2015 QST  PAGE 56‰

IS A UNIQUE FEATURE OF THE MFJ 223.  WHEN THE DDS SIGNAL SOURCE IS ON
MEASUREMENTS ARE BEING MADE, THIS TYPICALLY SHOWS AN S6 TO S8 LEVEL.
HOWEVER, WHEN THE DDS SOURCE IS OFF, THIS ALSO GIVES AN INDICATION OF
EXTERNAL RF SIGNALS THAT CAN DISTORT ACCURACY GREATER THAN S2 OR EVEN
DAMAGE THE MFJ 223 GREATER THAN S20.  THE SCAN MODE IS CONVENIENT FOR
LOOKING AT INDIVIDUAL BAND SWR CENTERING, AND EVEN PERMITS MULTIBAND
ANTENNA RESONANCE CHECKS.  YOU CAN SELECT ONLY FIXED SWEPT BANDWIDTHS OF
300 HZ, 600 KHZ, 1R2 MHZ, 2R4 MHZ, 6 MHZ, 12 MHZ, 24 MHZ, AND 48 MHZ.  THE
DIGITALLY DISPLAYED DATA CORRESPONDS TO THE CENTER FREQUENCY OF THE DISPLAY
AS SELECTED BY THE ROTARY ENCODER.  FIGURE 4 SHOWS A 300 KHZ SWEEP OF THE
20 METER BAND WHERE I ADJUSTED MY TRIBAND DIPOLE FOR LOWEST SWR AT 14R07
MHZ.  THIS GAVE ME A REASONABLY LOW SWR IN THE CW MY PREFERRED MODE PORTION
OF THE BAND, AS WELL AS IN THE LOWER PART OF THE PHONE BAND.  FIGURE 5
SHOWS A BROADER 24 MHZ SCAN INDICATING THE ANTENNA RESONANCES ON THE 20,
15, AND 10 METER BANDS.  ONE NICE FEATURE OF THE SWEPT DISPLAY IS THAT THE
LAST DISPLAY IS SAVED IN MEMORY WHEN YOU TURN OFF THE MFJ 223.  THIS
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ