Duo-Spiral Hetro-Loop Antenna Radio Units Inc.; Maywood, IL, build

MAGNETIC LOOP 40M - 10M Built by 2E0ERO

PDF) Gaped Two-Loop Antenna-Based Magnetic Transceiver With an Empirical Model for Wireless Underground Communication

Spiral loop

Spiral loop

Detailed dimensions of the dual-loop antenna unbent into a planar

Antenna

Build an Active AM Broadcast Ferrite Antenna /w Phase Loop

MAGNETIC LOOP 40M - 10M Built by 2E0ERO

Antenna

Hyphenation

MAGNETIC LOOP 40M - 10M Built by 2E0ERO

Implantable Rx loop antenna (a) Geometry, dimensions: LR=WR=12mm

Spiral loop

Implantable Rx loop antenna (a) Geometry, dimensions: LR=WR=12mm