=  NOW 10 WPM  =  TEXT IS FROM DECEMBER 2020 QST  PAGE 34  =

SIGNAL, EVEN WHEN THE TRANSMITTER IS NOT KEYED.  THIS CAN MASK WEAKER
SIGNALS IF NOT PROPERLY BLANKED.  TO REMEDY THIS SITUATION, CONNECT A DPDT
TRANSMIT/RECEIVE T/R SWITCH SEE FIGURE 7, WITH ONE PORTION OF THE SWITCH
USED TO SIGNAL THE ARDUINO THAT THE SYNTHESIZER OUTPUT SHOULD BE BLANKED ON
RECEIVE.  PIN 26 D8 OF THE ARDUINO IS USED TO TOGGLE THE SI5351 OUTPUT
=  END OF 10 WPM TEXT  =  QST DE W1AW  <