FG3600 RF Antenna 370MHz Whip Straight N Female Equivalent & Substitute Parts

Part Overview

The FG3600 is a 370MHz whip straight RF antenna manufactured by TE Connectivity Laird with N Type Female termination and bracket mount configuration. This component is designed for UHF frequency applications within the 360MHz to 380MHz band. The part is currently classified as obsolete, making identification of equivalent and substitute components necessary for system maintenance, repair, and redesign applications where continued sourcing of the original part is not feasible.

Substiute Parts

FG3600

TE Connectivity LairdIn Stock: 1019FG3600 Datasheet

Current PartRFQ

FG3803

TE Connectivity LairdIn Stock: 986FG3803 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FG3600 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Frequency Group: UHF (300MHz ~ 1GHz)
• Antenna Type: Whip, Straight configuration
• Termination: N Type Female connector
• Mounting Type: Bracket Mount
• Number of Bands: Single band operation

Substitution Logic: The FG3803 qualifies as a substitute part because it maintains identical antenna topology (whip, straight), identical termination type (N Type Female), identical mounting method (bracket mount), and operates within the adjacent UHF frequency band. Both parts are single-band antennas manufactured by TE Connectivity Laird with unrestricted moisture sensitivity ratings. The frequency separation between the FG3600 (370MHz center) and FG3803 (385MHz center) represents a 15MHz offset within the contiguous UHF spectrum, permitting functional substitution in applications where the specific frequency band can accommodate this variance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FG3803

The FG3803 is the designated substitute for the obsolete FG3600. Selection of the FG3803 is supported by the following engineering factors:

Mechanical Compatibility: Both parts employ identical bracket mount configurations and whip straight antenna topology, ensuring direct mechanical integration into existing mounting structures without modification.

Electrical Interface: Both parts feature N Type Female termination, providing direct connector compatibility with existing RF transmission line interfaces.

Frequency Band Adjacency: The FG3803 operates at 385MHz center frequency within the 380MHz to 390MHz band, positioned immediately adjacent to the FG3600 operating band. This frequency proximity within the UHF spectrum permits functional substitution in applications where the system design accommodates operation across the combined frequency range of 360MHz to 390MHz.

Product Status and Compliance: The FG3803 maintains active production status, ensuring continued availability and supply chain reliability. Both parts carry identical ECCN classification (5A991G) and MSL rating (1 - Unlimited), confirming equivalent regulatory and environmental compliance profiles.

Performance Specifications: The FG3803 provides documented performance parameters (VSWR: 2, Gain: 3dBd, Power: 100W) that were not specified for the obsolete FG3600, offering enhanced technical transparency for system design validation.

Frequently Asked Questions (FAQ)

Q: Can the FG3803 be used as a direct replacement for the FG3600 in all applications?

A: The FG3803 functions as a substitute where the system design permits operation within the 380MHz to 390MHz frequency band. Applications requiring operation strictly within the 360MHz to 370MHz range may require frequency tuning or system recalibration. The mechanical and electrical interfaces are identical, enabling direct physical substitution.

Q: What is the frequency overlap between FG3600 and FG3803?

A: Both parts operate within the 380MHz frequency point, which represents the upper limit of the FG3600 band and the lower limit of the FG3803 band. This 10MHz overlap zone permits functional operation for applications centered near this frequency boundary.

Q: Are there any differences in connector compatibility?

A: Both the FG3600 and FG3803 feature N Type Female termination. No connector adapter or modification is required for substitution.

Q: What mounting considerations apply to the FG3803?

A: The FG3803 employs bracket mount configuration identical to the FG3600. Existing mounting hardware and bracket structures are compatible without modification.

Q: Does the FG3803 provide better performance specifications than the FG3600?

A: The FG3803 provides documented performance parameters (VSWR: 2, Gain: 3dBd, Power: 100W) that enable quantified system design. The FG3600 specifications for these parameters were not provided in available documentation.

Q: What is the moisture sensitivity rating for the FG3803?

A: The FG3803 carries MSL rating 1 (Unlimited), identical to the FG3600, indicating no moisture sensitivity restrictions for storage, handling, or deployment.

Q: Are export control classifications identical between these parts?

A: Both the FG3600 and FG3803 carry ECCN classification 5A991G, confirming identical export control status and regulatory treatment.