The PNI UF400 is a compact, high-performance mobile UHF antenna designed to provide stable and reliable signal propagation across the 430 to 470 MHz frequency band. Perfectly suited for commercial UHF networks, professional fleets, and amateur radio (70cm band) operators, this 47.5 cm (475 mm) antenna offers an excellent balance between high-gain performance and low-profile physical dimensions. It comes complete with a strong magnetic base, making it an ideal choice for temporary or non-invasive vehicle roof or trunk-lid installations.
Featuring a 1/4λ wave vertical whip architecture, the UF400 yields an impressive system gain of 6 dBi and a highly stable Standing Wave Ratio (SWR) of less than 1.5:1, ensuring maximum power transfer from your transceiver. Built to handle extreme operating loads, this robust antenna supports a maximum transmit power capability of up to 400 Watts. Its durable, weather-resistant construction ensures exceptional resilience against highway wind resistance, moisture, and road vibrations, guaranteeing long-lasting outdoor performance.
For immediate out-of-the-box deployment, the PNI UF400 is paired with a heavy-duty 120mm magnetic base that holds tightly to any flat, ferrous metal surface on your vehicle. The base is pre-terminated with a generous 4-meter low-loss RG-58 coaxial cable ending in a standard PL (PL-259) male connector, allowing for a quick, hassle-free connection directly to your mobile radio transceiver.
Key Features
- Dedicated UHF frequency band coverage (430–470 MHz) for commercial and amateur radio.
- 1/4λ wave vertical whip design yielding an efficient 6 dBi system gain.
- Sturdy 120mm magnetic base provides a reliable, scratch-free mount on vehicles.
- High power handling capacity supporting up to 400 Watts maximum.
- Pre-installed with a 4-meter RG-58 coaxial cable and a standard PL connector.
- Compact, lightweight structure (47.5 cm height) minimizes wind loading.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | PNI |
| Model Designation | UF400 |
| Antenna Type | 1/4λ Wave Mobile UHF Antenna |
| Operating Frequency | 430 – 470 MHz |
| Standing Wave Ratio (SWR) | < 1.5:1 |
| Maximum Supported Power | 400 Watts |
| Polarization / Impedance | Linear Vertical / 50 Ohms |
| System Gain | 6 dBi |
| Antenna Whip Length | 475 mm (approx. 47 cm) |
| Magnetic Base Diameter | 120 mm |
| Coaxial Cable Type & Length | 4 meters of RG-58 Coaxial |
| Cable Connector | PL (PL-259 Male) |
Package Content
- 1x PNI UF400 UHF Antenna Whip
- 1x 120mm Magnetic Base with Integrated 4m RG-58 Cable
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