HOMEPRODUCTSRF ANTENNAS SW240-ZB144:225-260MHZ STRAIGHT ROD ANTENNA
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna
SW240-ZB144:225-260MHz Straight Rod Antenna

SW240-ZB144:225-260MHz Straight Rod Antenna

The SW240-ZB144 is a VHF omnidirectional straight rod antenna operating in the 225–260 MHz frequency band, with a gain of 2.15 dBi and an SMA connector, suitable for wireless communication and telemetry systems.

Technical Parameter

  • Frequency Range: 225-260 MHz

  • VSWR: ≤1.5

  • Gain: 2.15 dBi

  • Input impedance: 50 Ω

  • Interface: SMA-J 

  • Working Temperature: -40~+65°C

  • Antenna Color: Black

  • Polarization: Vertical

  • Radiation Pattern: Omnidirectional

  • Max power: 5W


This engineering drawing provides detailed annotations of all key dimensions of the SW240-ZB144 antenna (unit: mm), including a total length of 144mm and a base diameter of 14mm, offering precise reference data for engineers during structural design and installation.

Antennas have been tested using a network analyzer in a simulated wireless transmission environment.

This chart displays the measured Voltage Standing Wave Ratio (VSWR) of the SW240-ZB144 antenna across the frequency range from 150 MHz to 300 MHz. The graph shows that within its specified operating band of 225–260 MHz, the antenna's VSWR remains below 1.5, meeting the product specification. Marker 1 indicates the optimal matching point at 243 MHz, where the VSWR reaches its minimum value of approximately 1.2153, demonstrating peak performance at this frequency.

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