‰  NOW 5 WPM  ‰  TEXT IS FROM OCTOBER 2018 QST PAGE 32  ‰

IN AN EFFORT TO KEEP EVERYTHING BALANCED AND MINIMIZE PICKUP OF UNWANTED
SIGNALS AND NOISE, DC POWER IS SUPPLIED BY ONE OF THE PAIRS IN THE CAT5
CABLE WITH NO GROUND RETURN.  A SIMPLE RAIL SPLITTER TO ESTABLISH LOCAL DC
ƒ  QST DE W1AW  ‰
GROUND IS PROVIDED BY R109 AND R110.  THE SECOND HALF OF THE
INSTRUMENTATION AMPLIFIER IS A DIFFERENTIAL SUMMING AMPLIFIER USING U201,
‰  END OF 5 WPM TEXT  ‰  QST DE W1AW  ƒ