B4503-L

Antennas RF Overview

The B4503-L is a vehicular UHF whip antenna manufactured by TE Connectivity. It operates within the 450-470 MHz frequency band, providing a gain of 3 dBi. The antenna features a base-loaded design with a 5/8 wave element and an integrated load coil. It utilizes an NMO mount interface for secure installation on vehicles. The unit is constructed with chrome plating and elastomeric spray finishes to ensure durability in harsh environments.

Antennas RF Feature Summary

• Base-loaded 5/8 wave design for enhanced low-band performance
• Chrome and elastomeric spray finish for environmental resistance
• NMO base mount configuration for standardized vehicular integration

Antennas RF Applications

• Vehicular communications systems
• UHF radio installations
• Mobile data terminal antennas

Antennas RF Procurement Notes

Verify the specific datasheet version before procurement, as TE Connectivity may update mechanical drawings or material specifications without changing the part number suffix. Confirm that the NMO mount interface matches the vehicle's existing mounting hardware. Ensure the 450-470 MHz operational range aligns with the intended radio system frequencies to avoid impedance mismatch issues during deployment.

Antennas RF Selection Notes

Select this model when a high-gain 5/8 wave solution is required for UHF mobile applications. The base-loaded architecture offers superior performance compared to quarter-wave alternatives in space-constrained vehicular environments. Consider the chrome finish for aesthetic consistency with other external vehicle components. Verify compatibility with the target radio's power handling capabilities prior to final selection.

Antennas RF Part Context

This component belongs to TE Connectivity's Mobile Coil Antennas series, which specializes in robust RF solutions for transportation sectors. The B4503-L variant specifically addresses UHF band requirements, distinguishing it from VHF or dual-band models within the same product family. It serves as a dedicated single-band solution for operators requiring optimized signal reception in the 450-470 MHz spectrum.

Antennas RF Replacement Considerations

The B4503R is a documented substitute offering identical electrical characteristics but featuring a different physical finish.