S8243B RF Antenna 860MHz Whip Bracket Mount Equivalent & Substitute Parts

Part Overview

The S8243B is an 860MHz WiMax™ whip antenna manufactured by TE Connectivity Laird, designed for UHF band applications (824MHz ~ 896MHz). This component features an N Type Female termination with bracket mounting capability and delivers 5dBi gain at 5W maximum power handling. The product is currently classified as Obsolete, making identification of functionally equivalent alternatives essential for system redesign, maintenance, and procurement planning. Substitute parts must maintain compatibility across frequency range, termination type, mounting configuration, and mechanical envelope constraints.

Key Parameters

Parameter	S8243B
Frequency Range	824MHz ~ 896MHz
Center Frequency	860MHz
Antenna Type	Whip, Straight
Gain	5dBi
VSWR	1.5
Termination	N Type Female
Mounting Type	Bracket Mount
Height (Max)	780.00mm (30.709")
Power - Max	5W
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the S8243B is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Frequency Range: Must cover or fully contain 824MHz ~ 896MHz band
Termination Type: Must be N Type Female
Mounting Type: Must support Bracket Mount configuration
Antenna Type: Must be Whip, Straight configuration
Frequency Group: UHF (300MHz ~ 1GHz)

Performance Parameters (Allowable Variance):

Gain: 5dBi (substitute may vary based on application requirements)
VSWR: 1.5 (substitute performance acceptable if within standard RF specifications)
Power Handling: 5W minimum (substitute may exceed this rating)
Height: 780.00mm maximum (substitute must not exceed mechanical envelope constraints)

The FG8243 qualifies as a substitute based on matching all mandatory criteria while operating within the same frequency band and maintaining identical termination and mounting specifications.

Parameter Comparison

Parameter	S8243B (Main Part)	FG8243 (Substitute)	Compatibility Status
Frequency Range	824MHz ~ 896MHz	824MHz ~ 896MHz	Identical
Center Frequency	860MHz	860MHz	Identical
Antenna Type	Whip, Straight	Whip, Straight	Identical
Termination	N Type Female	N Type Female	Identical
Mounting Type	Bracket Mount	Bracket Mount	Identical
Gain	5dBi	4.5dBi	0.5dBi Variance
VSWR	1.5	2	Within Tolerance
Power - Max	5W	100W	Exceeds Requirement
Height (Max)	780.00mm	588.70mm	Within Envelope
Product Status	Obsolete	Active	Active Supply Available

Engineering Selection Recommendations

S8243B (Obsolete Status): The S8243B is no longer in active production. Procurement of new inventory is limited to existing stock channels. This part is suitable only for direct replacement in existing systems where exact specifications are required and stock availability can be confirmed.

FG8243 (Active Substitute): The FG8243 is classified as Active and maintains continuous manufacturing availability. This part satisfies all mandatory electrical and mechanical compatibility requirements for the S8243B application. The FG8243 provides superior power handling (100W vs. 5W), operates within the identical frequency band, and maintains the same termination and mounting interface. The mechanical height reduction (588.70mm vs. 780.00mm) provides installation flexibility within existing bracket mount systems. ROHS3 compliance of the FG8243 supports modern procurement and environmental standards.

Selection Basis:

Frequency band coverage: Identical (824MHz ~ 896MHz)
Electrical interface: Identical (N Type Female)
Mechanical interface: Identical (Bracket Mount)
Supply status: FG8243 offers active production vs. obsolete status of S8243B
Regulatory compliance: FG8243 provides ROHS3 certification

Frequently Asked Questions (FAQ)

Q: Can the FG8243 directly replace the S8243B in existing installations?

A: Yes. The FG8243 maintains identical frequency range (824MHz ~ 896MHz), N Type Female termination, and bracket mount configuration. The mechanical height is reduced (588.70mm vs. 780.00mm), which is compatible with existing mounting systems. Electrical performance differences (4.5dBi vs. 5dBi gain, VSWR 2 vs. 1.5) are within acceptable RF engineering tolerances for UHF band applications.

Q: What is the gain difference between S8243B and FG8243?

A: The S8243B provides 5dBi gain while the FG8243 provides 4.5dBi gain, representing a 0.5dBi variance. This difference is within standard RF antenna performance specifications and does not prevent functional substitution in most applications.

Q: Does the FG8243 support the same power levels as the S8243B?

A: The FG8243 exceeds the S8243B power specification. The S8243B is rated for 5W maximum power, while the FG8243 is rated for 100W maximum power. This makes the FG8243 suitable for applications requiring higher power handling.

Q: Are there packaging differences between these parts?

A: The S8243B is specified with "-" packaging notation, while the FG8243 is supplied in Bulk packaging. Both parts maintain identical electrical termination (N Type Female) and mechanical mounting (Bracket Mount), ensuring interface compatibility regardless of packaging configuration.

Q: What is the significance of the product status difference?

A: The S8243B is Obsolete, indicating discontinued production and limited stock availability. The FG8243 is Active, ensuring continuous manufacturing and reliable procurement for new designs and system replacements.

Q: Does the FG8243 meet current environmental compliance standards?

A: Yes. The FG8243 is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The S8243B compliance status is not specified in the provided data.

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