144/430MHz VHF UHF Dual Band Base Station Antenna 4.5/7.2dBi Omni – SD-X50
The SD-X50 is a dual-band VHF/UHF base station antenna designed for reliable operation in the 144 MHz and 430 MHz frequency bands. With a gain of 4.5 dBi at 144 MHz and 7.2 dBi at 430 MHz, it provides stable omni-directional coverage for fixed communication systems.
Featuring a low VSWR of less than 1.5 and a standard 50 Ohm impedance, the SD-X50 ensures efficient power transmission and reduced signal reflection. The 1700 mm fiberglass construction offers durability, weather resistance, and long-term outdoor performance while maintaining a compact and lightweight structure.
Equipped with an SO239 connector, the SD-X50 is suitable for amateur radio base stations, small repeater installations, and residential or industrial communication setups.
- Model No.
- X50
- Type
- Base station Antenna
- Place of Origin
- China
- Frequency Range
- 144/430MHz
- Gain
- 4.5/7.2dBi
- Connector
- SO239
- V.S.W.R
- Less than 1.5
- Impedance
- 50ohm
- Accept OEM
- yes
- Length
- 1700mm
- Material
- Fiberglass, Copper
Electrical Specifications
Frequency Range: 144 / 430 MHz
Gain:
-
4.5 dBi @ 144 MHz
-
7.2 dBi @ 430 MHz
Provides enhanced signal strength compared to standard low-profile antennas while maintaining stable performance.
Impedance: 50 Ohm
Ensures proper matching with common coaxial cable systems.
VSWR: < 1.5
Low standing wave ratio minimizes signal reflection and improves transmission efficiency.
Radiation Pattern: Omni-directional
Uniform 360° horizontal coverage for base station applications.
Mechanical Specifications
Length: 1700 mm
Compact size reduces wind load and simplifies installation.
Material: Fiber Glass
Weather-resistant fiberglass radome protects internal radiating elements from UV exposure, moisture, and corrosion.
Connector: SO239
Compatible with standard PL-259 connectors.
Performance Characteristics
The SD-X50 utilizes a vertical collinear structure to deliver:
-
Stable VHF/UHF dual-band operation
-
Consistent omni-directional coverage
-
Efficient power transmission
-
Reliable long-term outdoor performance
- part of antenna is individual packed in PE/PVC Bag.
- Each antenna will be tuned to best performance before delivery.
- We will provide customized packaging services based on the size of your antenna products (such as length, diameter, interface type, etc.) to ensure zero damage during transportation.
- All packages have passed the 1.2m drop test
During the installation process, avoid any collisions.
It is strictly prohibited to disassemble the antenna components; otherwise, it may lead to poor antenna performance.
The installation position of the antenna should be free of any obstructions.
When used outdoors, it is necessary to equip with lightning protection facilities.
may contain electronic components. Do not discard them randomly.
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