‰ NOW 10 WPM ‰ TEXT IS FROM JANUARY 2016 QST PAGE 43 ‰ OF COMPONENTS IS NOT CRITICAL. YOU CAN BUILD THE CIRCUIT ON A PIECE PERFBOARD OR ON A PCB LIKE I DID FIGURE 2. THERE IS LIMITED SPACE INSIDE THE SM 20 MICROPHONE. MY PCB MEASURES 1.2 BY 0R73 INCHES AND FITS NICELY INTO A CORNER RIGHT SIDE OF FIGURE 3 OF THE MICROPHONE BASE. LED PREPARATION THE LEDS ARE CONNECTED TO THE PCB WITH FLEXIBLE 24 OR 26 AWG ‰ END OF 10 WPM TEXT ‰ QST DE W1AW ƒ