Product Overview
Experience unmatched signal clarity with the DIAMOND VHF UHF Dual Band Antenna SM-502. Designed for mobile and car use, this high‑gain antenna delivers reliable reception on both the 144 MHz VHF and 430 MHz UHF bands. Whether you’re a ham radio enthusiast, a field technician, or a vehicle communication specialist, the SM-502 offers superior performance for KT‑8900D, KT‑7900D, BJ‑318 and other compatible radios.
Key Features
- Dual‑band design: 144 MHz VHF & 430 MHz UHF
- High dBi gain for extended range and clear reception
- Compact, lightweight construction ideal for mobile and car installations
- Durable, weather‑resistant housing protects against harsh environments
- Easy installation with standard SMA connectors and mounting brackets
- Broadband frequency response ensures compatibility with a wide range of radio models
Specifications
- Model: SM‑502
- Frequency Range: 144 MHz (VHF) – 430 MHz (UHF)
- Gain: 12 dBi (VHF) / 10 dBi (UHF)
- Impedance: 50 Ω
- Connector: SMA
- Dimensions: 120 mm × 45 mm × 35 mm
- Weight: 0.45 kg
- Operating Temperature: –20 °C to +60 °C
Compatible Devices
The SM-502 is engineered to work seamlessly with a range of mobile radios, including the KT‑8900D, KT‑7900D, BJ‑318 and other 144/430 MHz transceivers. Its versatile design ensures optimal performance across different platforms, from handheld units to vehicle-mounted systems.
Why Choose DIAMOND SM‑502?
With its combination of high dBi gain, rugged construction, and dual‑band capability, the DIAMOND SM‑502 is the go‑to choice for professionals who demand reliable communication. Whether you’re navigating remote terrains, operating in urban environments, or simply need a dependable antenna for your vehicle, the SM‑502 delivers consistent, crystal‑clear signal quality.
Price: Original price was: $ 54.62.$ 32.77Current price is: $ 32.77.

