‰  NOW 15 WPM  ‰  TEXT IS FROM AUGUST 2008 QST  PAGES 33, 35 AND 82  ‰

THE CW SIDETONE IS FED INTO PIN 3 OF U3, WHICH PROVIDES A VOLUME CONTROL
INDEPENDENT SIDE TONE LEVEL TO THE SPEAKER.  AUDIO MUTING DURING TRANSMIT
IS PERFORMED BY A 2N7000 FET, WHICH SIMPLY SHUNTS THE INPUT OF THE AUDIO
AMPLIFIER TO GROUND.  AN R C DELAY ON THE GATE SLOWS DOWN THE TURN OFF
TIME.  THIS ALLOWS THE TRANSMITTER TIME TO FULLY DECAY TO ZERO OUTPUT AND
GIVES SWITCHING TRANSITS TIME TO SETTLE DOWN, WHICH WOULD OTHERWISE RESULT
‰  FROM PAGE 82  ‰
KU0A/341 W4PZV/362 DJ4TZ/374 G4OBK/341 JA1EOD/362 JH1IED/342 EA8AKN/343 JA4
‰  END OF 15 WPM TEXT  ‚