Chameleon Antenna CHA-BV-SO239 HF Basic Vertical Antennas

The Chameleon Antenna CHA-BV-SO239 HF Basic Vertical Antenna system redefines versatility in portable antennas, offering an efficient and highly adaptable setup for single-band resonance from 40 - 6M. This antenna system is specifically engineered to meet the needs of field operators, emergency responders, and amateur radio enthusiasts who require reliable communication in varied environments.

Key Features:

High-Performance Telescopic Radiator: CHA SS17 Whip

The CHA-BV-SO239 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 117MHz) and folds down to 24in. for easy transport. This telescopic design lets operators fine-tune the whip length to optimize resonance for specific bands, ensuring minimal SWR for improved efficiency.

Radials System for Efficient Grounding

A critical element for unbalanced vertical antennas, the CHA-BV-SO239 includes four 12.6ft. radial wires housed 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-SO239 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-SO239 into a broadband vertical (MPAS Lite) that operates continuously from 1.8 to 54MHz, providing more comprehensive frequency access without needing to replace the core antenna setup. This modular approach allows users to expand and customize their equipment over time, ensuring the CHA-BV-SO239 remains adaptable and future-proof.

High-Quality Coaxial Cable with Integrated RFI Choke

A 12ft. 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.

Assembly and Tuning for Optimal Performance

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-SO239 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.

Ideal for a Wide Range of Applications

The CHA-BV-SO239’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-SO239 provides reliable communication channels for first responders and emergency personnel.

Amateur Radio Activities: Ideal for portable amateur radio operations (e.g., POTA or SOTA), providing dependable HF communications in various locations.

The CHA-BV-SO239 Antenna System Includes:

• (1) CHA Blank Adapter with a SO-239 connector

• (1) CHA Medium Loading Coil

• (1) CHA SS17 17ft. Telescopic whip

• (1) CHA Spike Mount

• (4) 12.6ft. Radial Wires with banana plug and isolation rings.

• (1) CHA Puck Hub

• (4) Wire Winders

• (1) 12ft. RG-58 Coaxial Cable with an integrated RFI Choke and PL-259 Connectors

• (4) Tent Stakes

Additional Feature and Specifications:

• Frequency Range: 6.9 to 30 MHz

• Band Coverage: 40 – 10M

• Power Capacity: 300W SSB Phone, 200W CW/Digital Modes

• Height: Fully extended 17ft., expandable to 25ft. with optional SS25 Whip (sold Separately)

• Weight: Approximately 4lbs.

• Coaxial Connector: SO-239

• Water Resistance: Designed for outdoor durability

• Extended Coverage and Additional Configurations

The modular characteristics CHA-BV-SO239 allows it to be converted into an Inverted Lazy "L" antenna for extended low-frequency coverage. Using the optional 60ft. long CHA LZ SLOPER (sold separately), the antenna can operate on the 60, 75, and 80-meter bands. This configuration provides HF communication over longer distances, which is invaluable for emergency communications or low-frequency ham operations in remote areas.