‰  NOW 13 WPM  ‰  TEXT IS FROM DECEMBER 2008 QST  PAGES 62 AND 78  ‰

IDEAL COMPONENTS.  FOR EXAMPLE, THE INTERTURN CAPACITANCE OF L1 CREATES
CW1, TYPICALLY A FEW PF FOR AN AIRWOUND COIL OF THE SIZE YOULL WIND.  THE
LEAD INDUCTANCE OF C1 APPEARS AS LS1 AND IS ABOUT 12 NH/INCH FOR 20 GAUGE
WIRE.  MORE PARASITIC CAPACITANCE APPEARS AS CIO, THE CAPACITANCE BETWEEN
THE INPUT AND OUTPUT CONNECTIONS.  THE SIZE AND PLACEMENT OF THE COMPONENTS
AFFECTS EACH OF THESE PARASITIC VALUES.  SANS SOLDER THE FIRST VERSION OF
THE CIRCUIT IS BUILT ON A SOLDERLESS BREADBOARD, AS SEEN IN FIGURE 2.  TO
ƒ  QST DE W1AW  ‰
WIND THE INDUCTORS, START WITH 16 INCHES OF SOLID 20 GAUGE WIRE.  SCRAPE
THE ENAMEL COATING OFF THE ENDS OF THE WIRE WITH A KNIFE OR FILE.  ON A 1/2
INCH FORM SUCH AS A DRILL BIT OR DOWEL, WIND NINE TURNS OVER A LENGTH OF
ABOUT 7/8 INCH.  LEAVE ABOUT 3/4 INCH OF WIRE ON EACH END TO MAKE LEADS.
‰  FROM PAGE 78  ‰
EPA KI3G 64 2 1 178 EPA WA3SWJ 32 2 1 178 MDC VE3RCN 47 2 1 174 ON K7MY
121 1 1 171 AZ WB5EXI 5 2 1 170 STX KL7GLL 48 2 1 168 VA KH6GMP 29 2 1 166
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ