‰ NOW 30 WPM ‰ TEXT IS FROM OCTOBER 2018 QST PAGE 42‰ DRIVER CONNECTED TO THE RELAY INTERRUPTS THE RELAY COIL CURRENT. THIS IS ESPECIALLY TRUE WHEN THE RELAY COIL HAS A LARGE INDUCTANCE. I CHOSE TO USE A DB 9 CONNECTOR FOR THE RADIO I/O INTERFACE AND A 3R5 MILLIMETER TRS JACK FOR THE EXTERNAL SPEAKER. SETUP FIRST, CONNECT THE INTERFACE TO YOUR COMPUTER AND ENSURE THAT YOUR COMPUTER RECOGNIZES THE USB SOUND DONGLE. THEN, ENSURE THAT THE AUDIO LEVEL SETTINGS WITHIN YOUR COMPUTER FOR THE DONGLE, BOTH MICROPHONE AND SPEAKER OUTPUT, ARE AT OR NEAR MAXIMUM. HOW YOU SET UP THE LEVELS DEPENDS ON YOUR COMPUTER, BUT SOME QUICK INTERNET SEARCHING SHOULD PROVIDE GUIDANCE. ON YOUR RADIO, ENSURE THAT YOUR TRANSMIT DRIVE CONTROL IS SET TO MINIMUM, SO IF YOUR TRANSMITTER IS ACTIVE IT WILL PUT OUT MINIMUM POWER. NEXT, CONNECT A CABLE FROM THE OUTPUT OF J2 PIN 1 TO THE MICROPHONE INPUT OF YOUR TRANSMITTER. THEN CONNECT A CABLE FROM THE OUTPUT OF J2 PIN 3 TO THE PTT INPUT OF YOUR TRANSMITTER. DONT FORGET THE GROUNDS ON J2 PIN 6. ON THE INTERFACE, ADJUST SW3 TO SELECT RIGHT CHANNEL AND SW4 TO SELECT FAST PTT OPERATION. START YOUR FAVORITE SOUND CARD DATA COMMUNICATION PROGRAM AND SELECT ANY MODE THAT SHOWS A ‰ END OF 30 WPM TEXT ‰ QST DE W1AW ƒ