The CHA BV (Basic Vertical) BNC from Chameleon Antenna™ redefines versatility in portable antennas, offering an efficient and highly adaptable setup for single-band resonance from 40 to 6 meters. This antenna is specifically engineered to meet the needs of field operators, emergency responders, and amateur radio enthusiasts who require reliable communication in varied environments. Here’s an in-depth look at what makes the CHA BV exceptional:

• Sturdy Ground Mounting with CHA SPIKE MOUNT
  The CHA SPIKE MOUNT allows easy installation by driving securely into the ground, providing a stable base for the antenna. This rugged mount is designed to withstand challenging conditions and keep the antenna in position, making it ideal for temporary field setups or areas with uneven ground.

• Efficient Resonant Design with Adjustable Band Coverage
  The CHA BV operates as a single-band, resonant vertical antenna for frequencies from 40 to 6 meters. Out of the box, it provides seamless operation from 20 to 6 meters, while the included Medium Loading Coil extends its reach to the 30 and 40-meter bands, adding flexibility for operators needing lower HF band access. Additionally, an optional 60 ft. Lazy Sloper kit can be added to expand coverage further, allowing operation on 60, 75, and even 80 meters.

• High-Performance Telescopic Radiator: CHA SS17 Whip
  The CHA BV uses the SS17 Whip, a durable, 17-foot telescopic whip antenna crafted from stainless steel. When fully extended, the whip resonates over a broad frequency range (up to 117 MHz) and folds down to 24 inches for easy transport. This telescopic design lets operators fine-tune the whip length to optimise resonance for specific bands, ensuring minimal SWR for improved efficiency.

• Radial System for Efficient Grounding
  A critical element for unbalanced vertical antennas, the CHA BV includes four 12'6" radial wires on line winders. These radials are connected to the CHA PUCK HUB, a robust machined aluminum hub designed to anchor multiple radials. Operators can adjust the radial length as needed, coiling excess wire for higher bands, or extending them fully to support efficient 40-meter operation. This radial system enhances grounding, which is essential for stable signal propagation and minimal interference.

• Modular and Expandable within the MPAS Ecosystem
  As a member of the MPAS family, the CHA BV is compatible with various Chameleon Antenna™ components, enabling easy upgrades. By integrating other MPAS accessories like the CHA Hybrid Mini or CHA Hybrid Micro transformers, users can transform the CHA BV into a broadband vertical (MPAS Lite) that operates continuously from 1.8 to 54 MHz, providing more comprehensive frequency access without needing to replace the core antenna setup. This modular approach allows users to expand and customise their equipment over time, ensuring the CHA BV remains adaptable and future-proof.

• High-Quality Coaxial Cable with Integrated RFI Choke
  A 12-foot RG-58 coaxial cable with an integrated RFI choke is included, designed to reduce radio frequency interference, improving signal clarity and stability. This addition is especially beneficial for field operators where environmental factors may introduce unwanted interference.

Setting up the CHA BV is a quick process, often completed in less than 10 minutes by one operator. The steps involve selecting a clear area (ideally about 26 feet in diameter), driving the SPIKE MOUNT into the ground, and assembling the antenna components as per the desired band. Adjusting the telescopic whip to the correct length, fine-tuning radial lengths, and connecting to a transceiver are all straightforward tasks.

The CHA BV also supports quick band changes with a telescoping whip, which can be lengthened or shortened to achieve optimal resonance within a band. This flexibility is complemented by the antenna’s low SWR (<2.0:1) across supported bands, which can be adjusted further using the whip’s length and radial configuration.

• Frequency Range: 6.9 to 117 MHz (40 - 6m amateur bands)
• Power Capacity: 300W SSB Phone, 200W CW/Digital Modes
• Height: Fully extended 17 ft., expandable to 25 ft. with optional SS25 Whip
• Weight: Approximately 4 lbs
• Connector Options: BNC
• Water Resistance: Designed for outdoor durability

The CHA BV’s modular build allows it to be converted into an Inverted Lazy "L" antenna for extended low-frequency coverage. Using the optional CHA LZ SLOPER (60 ft.), the antenna can operate on 60, 75, and 80 meters. This configuration provides HF communication over longer distances, which is invaluable for emergency communications or low-frequency ham operations in remote areas.

The CHA BV’s robust design, coupled with its lightweight, modular build, makes it suitable for a range of portable operations, including:

• Field Day Operations: Lightweight yet durable for easy transport and setup in outdoor environments.
• Emergency Communications (EMCOMM): Quickly deployable, the CHA BV provides reliable communication channels for first responders and emergency personnel.
• Amateur Radio Activities: Ideal for portable amateur radio operations (e.g., Parks on the Air or Summits on the Air), providing dependable HF communications in various locations.

The CHA BV from Chameleon Antenna™ BNC is more than a portable antenna; it’s a fully adaptable communication solution designed for those who require performance, resilience, and versatility in the field. Built with the operator in mind, this resonant antenna delivers on both simplicity and depth of performance, making it an essential tool in any operator's equipment lineup.