TEXT IS FROM AUGUST 2008 QST PAGES 31, 32 AND 82 ‰ QST DE W1AW ƒ ‰ NOW 5 WPM ‰ SWITCH AS SHOWN IN FIGURE 5. TO ROUTE THE AIR CONTROL LINE INTO THE SEALED PNEUMATIC SWITCH, A PNEUMATIC BULKHEAD FEED THROUGH FITTING WAS FABRICATED FROM A SIZE 12 24 BRASS MACHINE SCREW BY CUTTING OFF THE HEAD, DRILLING A ƒ QST DE W1AW ‰ 1/16 INCH DIAMETER HOLE DOWN ITS LENGTH AND MACHINING OFF THE THREADS ON ‰ FROM PAGE 82 ‰ 369 JA7JM/357 K6AAW/356 NW7O/346 W1GL/357 ‰ END OF 5 WPM TEXT ‰ QST DE W1AW ƒ