CHA B3D – Broadband Base Dipole HF Antenna

VERSATILE – DEPENDABLE – STEALTH – BUILT TO LAST

The One Antenna Solution for Real-World HF

The CHA B3D (Broadband Base Dipole) is designed for operators who need maximum performance with minimal complexity—especially in environments where space, visibility, or installation options are limited.

Whether you’re operating from an HOA, an urban lot, or a portable setup, the CHA B3D delivers reliable HF coverage across multiple bands with a simple, rugged, and stealthy design.

Built From Experience — Not Theory

The CHA B3D was developed from years of real-world use in restricted environments, where antennas must be:

• Discreet
• Flexible
• Easy to deploy
• Highly effective despite limitations

This is not a “lab antenna.” It’s a proven field solution that has supported NVIS, regional, and long-distance (DX) communications over years of continuous use.

Broadband Performance Made Simple

Forget complicated multi-band antennas.

The CHA B3D is a true broadband HF antenna designed to work seamlessly with your radio’s internal tuner:

• 60 ft version: Covers 80M – 6M (3.5–54 MHz)
• 120 ft & 146 ft versions: Covers 160M – 6M (1.8–54 MHz) 

This makes it ideal for:

• Beginners entering HF
• Operators who want a single antenna solution
• Emergency communications (EMCOMM)
• ALE and NVIS operations

Extreme Installation Flexibility

The CHA B3D adapts to your environment—not the other way around.

Deploy it as:

• Inverted V (single support)
• Horizontal dipole
• Low-profile stealth configuration
• Portable field antenna

It requires only a single center support in many setups and can be easily elevated using masts like the CHA CFM series.

Its forgiving design allows you to install it almost anywhere—even in challenging or compromised locations.

Stealth by Design

The CHA B3D is engineered to stay under the radar:

• Low-visibility wire design
• HOA-friendly installation options
• Blends naturally into surroundings

Perfect for operators who need performance without drawing attention.

Rugged & Reliable Construction

Built to survive real-world conditions:

• 16-gauge Tinned Copper Kevlar PTFE wire (-70°C to 150°C)
• High-strength, weather-resistant materials
• Matching transformer for efficient impedance handling
• Designed for long-term outdoor use

This antenna is virtually indestructible and built for years of dependable service.

Key Features

• Broadband HF coverage with tuner
• Multi-band operation from 160M to 6M (model dependent)
• NVIS, regional, and DX capability
• Extremely flexible installation options
• HOA and urban environment friendly
• Lightweight and portable
• Built for durability and long-term deployment

Specifications (60’ Model)

• Frequency: 3.5 – 54 MHz (60' Model)
• Frequency: 1.8 – 54 MHz (120' & 146' Model)
• Power:
  • 100W SSB
  • 50W CW
  • 25W digital modes
• SWR: Typically ≤ 4:1 (tuner required)
• Connection: SO-239 (UHF)
• Length: 60 ft total (2 x 30 ft legs)
• Length: 120 ft total (2 x 60 ft legs)
• Length: 146 ft total (2 x 73 ft legs)

Who Is This Antenna For?

• New HF operators looking for a simple, reliable start
• HOA / restricted environment users
• Portable / field operators (POTA, SOTA, EMCOMM)
• Operators who want one antenna that does it all
• Anyone tired of complicated, finicky multi-band systems

Simple. Stealthy. Effective.

The CHA B3D removes the complexity from HF.

No gimmicks. No compromises. Just a proven broadband antenna that works—where others don’t.