‰  NOW 25 WPM  ‰  TEXT IS FROM AUGUST 2005 QST  PAGES 54, 55 AND 103  ‰
CLOSER IN IMD DYNAMIC RANGE RESULTS PROVIDED IN THE WEB BASED EXPANDED
REPORT.  YAESU HAS ATTACKED EACH OF THE ABOVE PARAMETERS IN AN AGGRESSIVE
MANNER.  THE MDS IS OFTEN NOT A MAJOR CONCERN, SINCE AT HF RECEIVED NOISE
IS OFTEN MUCH STRONGER THAN THE RECEIVER NOISE FLOOR.  BY HAVING AN MDS
WELL BELOW THE EXTERNAL NOISE LEVEL TOO SENSITIVE A RECEIVER, THE FULL BDR
AND IMD DYNAMIC RANGE ARE EFFECTIVELY REDUCED, SINCE THEY ARE MEASURED FROM
THE MDS AND THE RANGE BETWEEN THE MDS AND THE EXTERNAL NOISE FLOOR IS NOT
GENERALLY USEFUL.  YAESU HAS PROVIDED A SINGLE BUTTON IPO INTERCEPT POINT
OPTIMIZATION CONTROL THAT ELIMINATES THE RF AMPLIFIER IN FRONT OF THE FIRST
MIXER.  THIS EFFECTIVELY SHIFTS THE DYNAMIC RANGE TO THE REGION AT WHICH IT
CAN BE MOST USEFUL.  IN ADDITION, ATTENUATORS OF 3, 6, 12 OR 18 DB CAN BE
APPLIED TO FURTHER REDUCE THE INPUT LEVEL.  IF RECEIVED NOISE IS LOW, OFTEN
‰  FROM PAGE 103  ‰
JG1SFX/335 JG1WRT/328 JG6MQI/333 JH1UUT/332 JH1VHU/333 JH3KEA/333
‰  END OF 25 WPM TEXT  ‰  QST DE W1AW  ƒ