SD-147 120cm 4dBi CB Antenna 27MHz CB Radio Antenna for mobile radio Car Truck Communication Antenna

120cm Optimized Length, Balancing Gain and Vehicle Adaptability

120cm Optimized Length, Balancing Gain and Vehicle Adaptability
The total length of the antenna is designed to be 120cm, achieving a balance between signal transmission performance and vehicle compatibility:

• Multi-vehicle Installation Adaptability: The 120cm length is suitable for commercial vehicles with higher bodies such as trucks and freight cars (installed on the roof or the side of the cab without affecting the vehicle's passing height), and is also compatible with household vehicles such as sedans and SUVs (installed via adjustable brackets to avoid scratches caused by excessive length). There is no need to replace the antenna separately due to differences in vehicle models.
• Enhanced Signal Coverage Range: Compared with short-sized antennas, the 120cm long whip structure can better match the signal wavelength of the 27MHz frequency band, improving signal radiation efficiency. Combined with the 4dBi gain, it can significantly extend the communication distance on open roads (such as highways and national roads), achieving stable communication of 10-20 kilometers (depending on the environment).
• Wind Resistance and Stability Design: The main body of the antenna is made of high-strength fiberglass or metal alloy material. Even with a length of 120cm, it still has good wind resistance performance. It is not prone to severe shaking when the vehicle is driving at high speed, avoiding signal fluctuations or antenna damage caused by wind resistance.

Dual Assurance of Quality and Compatibility

As a standardized product with a clear model, the SD-147 strictly complies with industry standards in design and production to ensure product reliability and adaptability:

• Stable Performance Parameters: Each SD-147 antenna undergoes factory calibration for frequency accuracy (27MHz±0.5MHz), impedance matching (standard 50Ω), and gain value (4dBi±0.3dBi). The performance difference between products of different batches is small, so users do not need to worry about communication failures caused by inconsistent parameters.
• Universal Interface Adaptation: It is equipped with PL259 or BNC interfaces commonly used for vehicle-mounted CB antennas (depending on the actual product configuration), which can be directly connected to mainstream brand vehicle-mounted walkie-talkies on the market (such as Motorola, Kenwood, Baofeng, etc.). No additional adapters are required, enabling "plug-and-play" and reducing installation difficulty.
• Durable Material Selection: The outer layer of the antenna is made of weather-resistant PVC or rubber material, which can resist ultraviolet radiation, rain erosion, and high-low temperature changes (-30℃ to 60℃), and is not prone to aging or cracking after long-term use. The inner conductor is made of high-purity copper material, which reduces signal transmission loss and extends the service life of the antenna.

Transport

We can deliver the goods to your country for you. We will load the containers for you free of charge to ensure that the goods will not be damaged during transportation.

You can either use our freight forwarding service or arrange it yourself. It all depends on you.

Although the deployment process is relatively simple, we do not currently offer installation services. However, we can provide on-site technical support for you.