The Jeffrika7b TV Antenna

The Jeffrika7b antenna is highly regarded among DIY enthusiasts because it is specifically optimized for modern digital broadcasting standards across both the VHF and UHF bands. Unlike simpler designs that struggle with VHF, this model is engineered to capture high-definition signals from a variety of directions without needing expensive equipment.

The key reasons for its reputation include:

• Dual-Band Optimization: It is precisely tuned for VHF channels 7–13 (174–216 MHz) and UHF channels 14–36 (470–608 MHz), covering all of modern ATSC 1.0 and 3.0 (NextGen TV) broadcast frequencies.
• Bi-Directional Wide Beam: It features a bi-directional, horizontally polarized reception pattern. This allows it to pick up signals from two opposite directions simultaneously with a wide beam, making it ideal for users located between two different broadcast cities.
• Affordability & Versatility: It can be built from common home store materials for approximately $40. Its flat profile allows for flexible mounting on a wall, in an attic, or outdoors on a roof or chimney.
• Extensive RF Modeling and VNA Testing: Computer modeling and real world testing has shown that it can outperform commercial 4-bay bowtie and Gray-Hoverman design anennas in core UHF performance, while providing VHF coverage that flat panel antenna designs typically leave out.
• Ease of Assembly: It has only four simple wire segments to assemble, leading to a robust and durable build, proven to last outdoors for years in harsh winter and summer climates.

Even if you've never built an antenna before, you can use our step-by-step instructions to build your own Jeffrika7b, and start getting great TV reception.

1. Cut the Cable!
2. Antenna Design and Simulation.
3. Construction Bill of Materials.
4. The Build (step by step).
5. Streaming DVR.
6. Downloads and Resources.