‰ NOW 13 WPM ‰ TEXT IS FROM MAY 2019 QST PAGE 33 ‰ AFTER THAT, A BRIEF TRANSMISSION PREFERABLY AM, FM, OR CW IS NEEDED TO TUNE THE CAPACITOR FOR A MINIMUM SWR. ACCORDING TO AA5TBS CALCULATOR, MY LOOP HAS A 3 DB BANDWIDTH OF ABOUT 14 KHZ ON 40 METERS, 27 KHZ ON 20 METERS, AND 200 KHZ ON 10 METERS. TUNING AT FIRST MIGHT SEEM CHALLENGING BUT WILL BECOME NATURAL AFTER A VERY SHORT PERIOD. WITH SOME EXPERIENCE, THE ANTENNA CAN BE TUNED IN JUST A FEW SECONDS. RF SAFETY SMALL LOOPS DEVELOP A VERY HIGH RF VOLTAGE AND E FIELD NEAR AND AT THE CAPACITOR. FOR THIS ƒ QST DE W1AW ‰ REASON, THE MAXIMUM USABLE POWER IS 10 15 W. IF YOU EXCEED THAT POWER, THE CAPACITOR WILL ARC, EVENTUALLY RESULTING IN PERMANENT DAMAGE. IF YOU ACCIDENTALLY KEY 100 W, THE CAPACITOR VOLTAGE WILL EXCEED A PEAK OF 4 KV AND WELDING MACHINE LIKE SPARKS WILL FLY. THE ENCLOSURE MIGHT EVEN CATCH FIRE. REVIEW THE RF EXPOSURE AND SAFETY MATERIALS FOR THIS KIND OF ANTENNA. TOUCHING THE RADIATOR WHEN TRANSMITTING RF POWER CAN RESULT IN ‰ END OF 13 WPM TEXT ‰ QST DE W1AW ƒ