Chameleon Antenna CHA Square SO-239 Blank Adapters are a compact, heavy‑duty inline adapter featuring dual SO‑239 (UHF female) connectors and a 3/8-24in. bottom male stud. This design allows seamless connection between SO‑239‑equipped antennas or accessories while mounting directly to any 3/8-24in. female antenna support, such as tripods, masts, magnetic mounts, or vehicle brackets. Precision‑machined from high‑grade materials, the adapter delivers excellent RF conductivity, rugged mechanical strength, and long‑term reliability across HF, VHF, and UHF bands. Ideal for portable, mobile, base, and test configurations requiring fast, modular equipment integration.

Features

• Dual SO‑239 Connectors: Inline connection between antennas, couplers, or matching units using SO‑239 (UHF male) interfaces.

• 3/8-24in. Threaded Base: Fits any standard 3/8"-24 female mount.

• Wide Frequency Compatibility: Supports HF/VHF/UHF antennas and accessories.

• Rugged Construction: Machined aluminum body for strength, stability, and corrosion resistance.

• Modular Flexibility: Enables quick reconfiguration in portable, mobile, or field‑test setups.

Compatible Antennas (Examples): Works with any antenna using a SO‑239 (UHF male) base connector, including:

• Yaesu ATAS‑120A

• Diamond SD330

• Comet HFJ‑350 Series

• Chelegance M‑104 HF

• Moonraker MD‑3500

• HD‑330 (3.5–50 MHz)

Specifications

• Connector configuration: Dual SO‑239 + 3/8-24in. bottom male stud

• Mount compatibility: Any 3/8-24in. female threaded support

• Applications: Base stations, mobile installations, tactical and field deployments, and test environments