Specifications
This document outlines the detailed electrical and mechanical specifications of the antenna, with clear differentiation between two variants (5-element and 3-element) for easy reference.
1. Electrical Specifications
| Parameter | Specification |
|---|---|
| Frequency Range | 350-500 MHz (Tuning module pre-configured to 430-450 MHz before shipment) |
| Impedance | 50 Ω |
| VSWR (Voltage Standing Wave Ratio) | < 1.5 (typical value: 1.2:1, see Mechanical Specifications for variant details) |
| Gain | 11 dBi / 9 dBi (corresponds to 11 dBd / 9 dBd, matching element variants) |
| Polarization | Vertical |
| Horizontal 3dB Beam Width | 45° |
| Vertical 3dB Beam Width | 40° |
| Front-to-Back Ratio | > 9 dB |
| Lightning Protection | Direct grounding design |
| Connector Type | U Female (SO239) |
| Maximum Power Input | 150 W |
2. Mechanical Specifications
The antenna is available in two variants with different element counts, as detailed below:
2.1 5-Element Variant
- Number of Elements: 5
- Forward Gain: 11 dBd (equivalent to 11 dBi in electrical specs)
- SWR (Typical): 1.2:1
- Typical Bandwidth: 2.1 MHz
- Boom Length: 395 mm + 300 mm
-
Antenna Dimensions:
- Length of Main Pole: 70 cm
- Length of Maximum Elements: 38 cm
- Net Weight: 0.315 kg
2.2 3-Element Variant
- Number of Elements: 3
- Forward Gain: 9 dBd (equivalent to 9 dBi in electrical specs)
- SWR (Typical): 1.2:1
- Typical Bandwidth: 2.1 MHz
- Boom Length: 395 mm
-
Antenna Dimensions:
- Length of Main Pole: 70 cm
- Length of Maximum Elements: 38 cm
- Net Weight: 0.275 kg
