The Icom AL-705 40-10M Magnetic Loop Antenna is manufactured by Alpha Antenna. The 3-foot-wide base Alpha Loop that covers 10 to 40 Meters is remotely tuned and rated at 20 watts SSB and 10 watts CW/Digital, which are each based on duty cycles.This magnetic loop antenna is a complete circuit, so there is no need for radials or counterpoise. It also includes a direct wire
CORRECTION MADE - (Thank you, Ken!)
The Icom AL-705 40-10M Magnetic Loop Antenna is manufactured by Alpha Antenna. The 3-foot-wide base Alpha Loop, which covers 10 to 40 Meters, is remotely tuned and rated at 20 watts SSB and 10 watts CW/Digital, each based on duty cycles. This magnetic loop antenna is a complete circuit, so there is no need for radials or counterpoise. It also includes a direct wire remote control.
(It is a coupler or matching box. Its job is to match the impedance to obtain a low SWR. That’s what makes it a self-resonant antenna. No need for an external tuner)