FG821-18503

Antennas RF Overview

The TE Connectivity FG821-18503 is a dual-band cellular whip antenna designed for UHF frequency groups. It operates within the 821MHz to 896MHz and 1.85GHz to 1.99GHz ranges, with center frequencies at 858MHz and 1.9GHz. The antenna features a straight whip type with NMO connector termination and bracket mounting. It provides 3dBi gain and supports up to 100W maximum power. Key electrical specifications include a VSWR of 2 and return loss of -10dB. The unit has a maximum height of 2.700 inches (68.58 mm) and is classified under Laird Phantom Elite series technology.

Antennas RF Feature Summary

• Dual-band operation supporting Cellular and PCS bands simultaneously
• True Field Diversity design for uninterrupted transmissions in urban canyons
• Vertical and horizontal polarization capabilities
• Durable construction suitable for outdoor and indoor applications

Antennas RF Applications

• Base station or micro base station deployments
• Public safety agency communications
• Commercial organization networks
• Military communication systems

Antennas RF Procurement Notes

Verify part number accuracy as TE Connectivity may use varying suffix formats such as FG821/18503 or FG821-18503. Confirm NMO base compatibility with existing mounts. Check current availability status as some listings indicate end-of-life or discontinuation timelines. Ensure environmental ratings match installation site requirements. Validate RoHS compliance if required by project specifications.

Antennas RF Selection Notes

Select this model when dual-band cellular coverage is required without separate antennas. The NMO mount offers standard compatibility with various Laird mounting solutions. Consider the 2.7-inch height for low-profile installation needs. Evaluate the 100W power handling against transmitter output levels. Verify that the 3dBi gain meets link budget requirements for the specific deployment environment.

Antennas RF Part Context

This component belongs to the Laird Phantom Elite series, known for patented diversity designs. It replaces older single-band whip antennas by combining two frequency ranges into one compact unit. The product line targets mobile and fixed wireless infrastructure where space and visibility are constraints. TE Connectivity acquired Laird's RF division, integrating these products into their portfolio.

Antennas RF Replacement Considerations

No direct public substitute part numbers are confirmed for immediate replacement. Users may consider other models within the Laird Phantom Elite family or TE Connectivity cellular antenna lines. Verify mechanical dimensions and connector types before substituting. Consult manufacturer documentation for updated equivalents if this specific variant is discontinued.