=  NOW 25 WPM  =  TEXT IS FROM AUGUST 2021  QST  PAGE 33 =

A 1N4148 DIODE IN SERIES TO PROVIDE A CONNECTION POINT SEE FIGURE 2.  AGC
OUTPUT LEVEL TO THE RECEIVER IS ALSO ADJUSTABLE BY R10, SO YOU CAN SET THE
ATTENUATION REQUIRED.  THE CIRCUIT BOARD THE CIRCUIT BOARD IS CONFIGURED TO
CLOSELY MATCH THE LAYOUT OF THE SCHEMATIC DIAGRAM.  SEE THE BOARD LAYOUT
AND DETAILS AT ARRL. ORG/QST IN DEPTH.  SETUP START WITH THE RECEIVER RF
GAIN CONTROL SET TO MAXIMUM, AND THE AF GAIN CONTROL TO A COMFORTABLE
LEVEL.  THEN, ON THE AGC BOARD 1 SET R8, R9, AND R10 POTENTIOMETERS
APPROXIMATELY TO MIDPOINT.  2 IF YOU HAVE CONNECTED AN S METER, TUNE IN A
STRONG SIGNAL THAT YOU WOULD CONSIDER S 9 LEVEL, AND ADJUST R9 TO SHOW S 9
ON THE METER.  IF THE METER WILL NOT REACH THAT HIGH, ADJUST R8 UNTIL THE
LEVEL IS REACHED.  3 ADJUST THE AGC R10 FOR A COMFORTABLE AUDIO LEVEL FROM
THE RECEIVER.  4 NOW, TUNE IN A WEAK SIGNAL OF ABOUT S 5, AND ADJUST THE
THRESHOLD TO THE POINT WHERE THE AUDIO LEVEL FROM THE RECEIVER JUST STARTS
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