APAMP-126 GPS Dome RF Antenna Equivalent & Substitute Parts

Part Overview

The APAMP-126 is a 1.575GHz GPS dome RF antenna with SMA male termination and magnetic mounting, designed for navigation applications in the UHF frequency band (1GHz ~ 2GHz). This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The APAMP-126 delivers 5dBic gain across the 1.574GHz ~ 1.576GHz frequency range with a VSWR of 1.5, meeting ROHS3 compliance requirements.

Substiute Parts

APAMP-126

Abracon LLCIn Stock: 1152APAMP-126 Datasheet

Current PartRFQ

APAMP-124

Abracon LLCIn Stock: 1189APAMP-124 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the APAMP-126 is determined by the following critical parameters:

• Frequency Specification: Center frequency of 1.575GHz with operating range 1.574GHz ~ 1.576GHz
• Antenna Configuration: Dome form factor with SMA male connector
• Electrical Performance: Gain of 5dBic and VSWR of 1.5
• Mechanical Interface: Magnetic mounting base
• Compliance: ROHS3 certification

The APAMP-124 meets all substitution criteria, maintaining identical electrical performance specifications and mechanical compatibility while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The APAMP-124 is the direct functional equivalent for APAMP-126 applications. Both parts maintain identical electrical specifications (1.575GHz center frequency, 5dBic gain, 1.5 VSWR) and mechanical compatibility (SMA male termination, magnetic mounting). The APAMP-124 offers the advantage of active product status with current manufacturing support and ROHS3 compliance certification. The height differential of 0.50mm (0.610" versus 0.591") falls within typical mechanical tolerance ranges for GPS antenna installations and does not affect electrical performance. Selection of APAMP-124 is appropriate for new designs and legacy system replacements where APAMP-126 availability is constrained.

Frequently Asked Questions (FAQ)

Q: Can APAMP-124 directly replace APAMP-126 in existing designs? A: Yes. Both parts share identical electrical specifications (frequency, gain, VSWR) and mechanical interfaces (SMA male connector, magnetic base). The 0.50mm height difference is within standard mechanical tolerances for GPS antenna applications.

Q: What is the primary reason for substitution? A: APAMP-126 is classified as obsolete. APAMP-124 provides equivalent functionality with active product status and ongoing manufacturer support.

Q: Are there compliance differences between these parts? A: Both parts are ROHS3 compliant. APAMP-124 carries REACH Affected status while APAMP-126 is REACH Unaffected; however, both meet applicable environmental regulations for GPS navigation applications.

Q: Does the packaging format affect electrical performance? A: No. APAMP-126 is supplied in standard packaging while APAMP-124 is supplied in bulk packaging. Packaging format does not impact antenna electrical characteristics or performance.

Q: Are there frequency band restrictions for either part? A: Both parts operate identically within the 1.574GHz ~ 1.576GHz range, covering standard GPS L1 frequency allocations. No frequency restrictions apply to either part.