‰  NOW 30 WPM  ‰  TEXT IS FROM JULY 2014 QST  PAGE 63‰

EXTRA HOLES IN THE PANEL.  CRYSTAL PHASING 2R0 I WAS SOMEWHAT SURPRISED YET
GRATIFIED AT THE OVERWHELMING RESPONSE I GOT TO MY APRIL 2014 QST ARTICLE
ON CRYSTAL PHASING.  AS I OFTEN SAY IN MY TECHNICAL WRITINGS, I DONT EXPECT
TO BE THE LAST WORD ON THE SUBJECT, BUT I AM MORE THAN HAPPY TO BE JUST THE
FIRST WORD ON A SUBJECT IF IT FOMENTS LIVELY DISCUSSION.  ITS OBVIOUSLY
BEEN A LONG TIME SINCE ANY MENTION OF THIS CLASSIC FILTER HAS BEEN MADE IN
QST OR ANY OTHER RECENT PUBLICATION.  I HAD MADE A SOMEWHAT PARENTHETICAL
COMMENT ABOUT THE FACT THAT MOST BOAT ANCHORS DIDNT HAVE THE INHERENT
STABILITY OR BANDSPREAD TUNING RATIO TO TAKE FULL ADVANTAGE OF THE
EXTREMELY NARROW BANDWIDTHS OF THE PHASED CRYSTAL.  I ACTUALLY PREFER TO
CALL IT THE NEUTRALIZED CRYSTAL, BECAUSE AT ITS CORE THE PHASING CAPACITOR
DOES NOTHING MORE THAN NEUTRALIZE THE HOLDER CAPACITANCE, ALLOWING THE
CRYSTAL TO OPERATE IN A PURE SERIES RESONANT AND VERY SHARP MODE.  AS IT
TURNS OUT, FROM THE FEEDBACK IVE RECEIVED, THE MISMATCH BETWEEN TUNING
RATIO AND SELECTIVITY IS FAR MORE DRAMATIC THAN I HAD GUESSED, FOR MOST
RIGS OF THAT VINTAGE.  UNLESS YOU HAVE A SAFECRACKERS TOUCH, YOURE MORE
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ