CWB1503 RF Antenna Equivalent & Substitute Parts

Part Overview

The CWB1503 is a 156MHz whip straight RF antenna manufactured by TE Connectivity Laird, designed for VHF applications in the 150MHz to 162MHz frequency band. This component features an NMO base mount termination and delivers 3dB gain with a maximum power handling of 200W. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing in legacy applications.

Substiute Parts

CWB1503

TE Connectivity LairdIn Stock: 846CWB1503 Datasheet

Current PartRFQ

EM-MX5152-MP

Nearson Inc.In Stock: 1075EM-MX5152-MP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWB1503 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Frequency Group: VHF (f < 300MHz)
• Frequency Range Overlap: Must cover or substantially overlap 150MHz – 162MHz band
• Antenna Type: Whip, Straight configuration
• Termination: NMO connector type
• Mounting Type: Base Mount

Performance Parameters:

• Gain specification (3dB baseline)
• VSWR performance (2 baseline)
• Power handling capacity (200W baseline)

The substitute part EM-MX5152-MP meets all mandatory compatibility criteria. Its frequency range of 152MHz – 162MHz encompasses the operational band of the CWB1503, and it maintains identical antenna type, termination, and mounting specifications. The substitute operates at a center frequency of 157MHz with 2dBi gain and supports 100W maximum power.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: EM-MX5152-MP

The EM-MX5152-MP from Nearson Inc. is the designated substitute for the obsolete CWB1503. This component maintains full mechanical and electrical compatibility through identical NMO termination, base mount configuration, and whip antenna geometry. Both parts operate within the VHF frequency band with overlapping operational ranges.

Status Considerations: The CWB1503 is classified as obsolete, while the EM-MX5152-MP maintains active product status with current manufacturing support. The substitute carries RoHS Compliance certification, meeting modern environmental and regulatory standards applicable to electronic component procurement.

Performance Differential: The EM-MX5152-MP operates at 157MHz center frequency versus the CWB1503's 156MHz, representing a 1MHz offset within the shared 150MHz – 162MHz operational band. Gain specification differs at 2dBi versus 3dB, and maximum power handling is rated at 100W compared to 200W. These differences reflect design variations between manufacturers but do not preclude functional substitution in applications where the frequency band and connector type are primary selection criteria.

Compliance and Sourcing: Current inventory availability for the EM-MX5152-MP (975 Pcs) supports immediate procurement, whereas the CWB1503 (785 Pcs) represents legacy stock. The substitute's active status ensures long-term availability and technical support.

Frequently Asked Questions (FAQ)

Q: Can the EM-MX5152-MP directly replace the CWB1503 in existing installations?

A: Yes, for applications requiring NMO base-mount whip antennas in the VHF band. Both components share identical termination type, mounting configuration, and antenna geometry. Frequency band overlap (150MHz – 162MHz for CWB1503; 152MHz – 162MHz for EM-MX5152-MP) ensures operational compatibility across the shared range.

Q: What are the differences in gain and power handling between these parts?

A: The CWB1503 specifies 3dB gain and 200W maximum power, while the EM-MX5152-MP specifies 2dBi gain and 100W maximum power. These represent design variations between manufacturers. Selection should be based on system power budget and gain requirements at the operating frequency.

Q: Is the EM-MX5152-MP RoHS compliant?

A: Yes. The EM-MX5152-MP carries RoHS Compliance certification. The CWB1503 RoHS status is not specified in available documentation.

Q: What is the frequency band overlap between these antennas?

A: Both components operate across 152MHz – 162MHz. The CWB1503 extends to 150MHz, while the EM-MX5152-MP begins at 152MHz. Applications requiring operation below 152MHz must use the CWB1503 or identify alternative substitutes.

Q: Are there packaging differences between the main part and substitute?

A: The CWB1503 is packaged as individual units (packaging not specified), while the EM-MX5152-MP is supplied in bulk packaging. Both are available as new original stock.

Q: What is the VSWR specification for the EM-MX5152-MP?

A: VSWR is not specified for the EM-MX5152-MP in available documentation. The CWB1503 specifies VSWR of 2. This parameter should be confirmed with the manufacturer if critical to system design.