SY42XR-135-CR Yagi Antenna
The SY42XR-135-CR is a corrosion-resistant dual Yagi screen reflector antenna (132–138 MHz) designed for long-range VHF communication with high gain and interference rejection in coastal and harsh industrial environments.
Description
The SY42XR-135-CR Yagi Antenna is designed for long-range, point-to-point VHF communication in harsh and demanding environments. Operating within the 132-138 MHz frequency range, its stacked Yagi design with a screen reflector enhances directional gain, minimizes interference, and ensures superior signal clarity, making it ideal for long-distance transmission in coastal, industrial, and high-exposure applications.
Built for extreme durability, the SY42XR-135-CR features corrosion-resistant materials, ensuring long-term reliability in salt-laden and high-humidity environments. Its robust construction and high-gain performance make it a trusted solution for air traffic control, remote monitoring, and critical communication networks that require consistent, interference-free connectivity in challenging conditions.
| General Specifications | |
|---|---|
| Model Name | SY42XR-135-CR |
| Part Number | 99870501 |
| Antenna Type | Yagi Antenna |
| Radiation Pattern | Directional |
| Compliances | RoHS, REACH |
| Markets | Military & Defence, Aviation & Air Traffic |
| Electrical Specifications | |
| Frequency (MHz) | 132-138 |
| Gain - (dBi) | 14.5 |
| Polarization | Vertical or Horizontal |
| VSWR (Max) | 1.8:1 |
| Impedance (Ω) | 50 |
| Max Input Power (W) | 1000 |
| HPBW E-Plane (°) | 40 |
| HPBW H-Plane (°) | 40 |
| Mechanical Specifications | |
| Weight - lbs (kg) | 32 (14.5) |
| Ground Plane Diameter - in (mm) | 86 (2184) x 80 (2032) |
| Connector Type | N-Type (Female) |
| Number of Connectors | 1 |
| Environmental & Structural Specifications | |
| Thrust (ice lbs) | 210 |
| Thrust with ½" Ice (ice lbs) | 480 |
| Mounting Specifications | |
| Mount Type | Tower leg mount (SY-M kit) |
Model Variants
- SY42XR-129 Yagi Antenna – Frequency-Shifted Model (126-132 MHz)
- SY42XR-135 Yagi Antenna – Uncoated, no corrosion‑resistant treatment applied
- SY42XR-310 Yagi Antenna – Frequency-Shifted Model (300-318 MHz)
- SY42XR-123 Yagi Antenna – Frequency-Shifted Model (120-126 MHz)


