30m/40m Dual-Band Delta Loop Antenna Design

This resource provides a detailed guide for constructing a Dual-Band Delta Loop antenna designed for the 30m and 40m amateur radio bands. The antenna is configured as a full-wave loop with a total wire length of approximately 141 feet for the 40m band, utilizing a specific formula of 1005/F for circumference calculations. The design features a Ceramic Knife Switch that allows operators to switch between resonant states, optimizing performance for both bands. The antenna's low angle of radiation enhances long-distance communication capabilities, making it suitable for both daytime regional nets and nighttime DX operations. The physical setup requires a height of around 12 feet and can be supported by a single mast or tree limb, making it practical for suburban installations.