GNSS4GDPSM-1M Equivalent & Substitute Parts

Part Overview

The GNSS4GDPSM-1M is a multi-band dome RF antenna manufactured by PCTEL, Inc., designed for GNSS, GPS, GLONASS, and LTE applications. This antenna features a 1-meter cable with SMA Male connector termination and operates across three frequency bands: 698MHz–960MHz, 1.575GHz–1.61GHz, and 1.71GHz–2.7GHz. The product is currently listed as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new deployments requiring similar performance characteristics.

Key Parameters

Parameter	GNSS4GDPSM-1M
Manufacturer	PCTEL, Inc.
Series	4GDPSM
Antenna Type	Dome
Frequency Range	698MHz–960MHz, 1.575GHz–1.61GHz, 1.71GHz–2.7GHz
Number of Bands	3
Gain	-8.85dBi, -10.97dBi
VSWR	2
Termination	SMA Male
Cable Length	1 meter
Ingress Protection	IP67
Height (Max)	1.575" (40.00mm)
Applications	GLONASS, GNSS, GPS, LTE
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the GNSS4GDPSM-1M is determined by the following critical parameters:

Primary Substitution Criteria:

Frequency coverage overlap across the three operating bands (698MHz–960MHz, 1.575GHz–1.61GHz, 1.71GHz–2.7GHz)
SMA Male connector termination compatibility
Dome antenna form factor
IP67 ingress protection rating
ROHS3 compliance
Gain performance within acceptable range (-8.85dBi to -10.97dBi)
VSWR specification of 2 or better

Secondary Considerations:

Cable length variations (1 meter baseline)
Mounting type (Connector Mount vs. Stud)
Product status (Active vs. Obsolete)
Series designation (4GDPSM family)

Parameter Comparison

Parameter	GNSS4GDPSM-1M	710641	GLLPDLTE-B
Manufacturer	PCTEL, Inc.	PCTEL, Inc.	PCTEL, Inc.
Antenna Type	Dome	Dome	Module
Frequency Range (Lower)	698MHz–960MHz	698MHz–960MHz	617MHz–698MHz, 698MHz–790MHz, 790MHz–960MHz
Frequency Range (Mid)	1.575GHz–1.61GHz	Not specified	1.71GHz–2.17GHz
Frequency Range (Upper)	1.71GHz–2.7GHz	1.71GHz–2.7GHz	2.3GHz–2.69GHz, 3.3GHz–4.2GHz, 4.4GHz–5GHz, 4.9GHz–5.95GHz
Number of Bands	3	2	12
Gain	-8.85dBi, -10.97dBi	-8.85dBi, -10.97dBi	3dBi
VSWR	2	2	2:1
Termination	SMA Male	SMA Male	SMA
Cable Length	1 meter	5 meters	Not specified
Mounting Type	Connector Mount	Stud	Stud
Ingress Protection	IP67	IP67	IP67
Height (Max)	1.575" (40.00mm)	1.575" (40.00mm)	1.339" (34.00mm)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

710641 (Primary Substitute): The 710641 is the closest functional equivalent to the GNSS4GDPSM-1M within the 4GDPSM series. Both antennas share identical dome form factor, gain specifications (-8.85dBi, -10.97dBi), VSWR (2), and height (40mm). Frequency coverage is substantially aligned across the 698MHz–960MHz and 1.71GHz–2.7GHz bands. The primary difference is cable length (5 meters vs. 1 meter) and mounting type (Stud vs. Connector Mount). The 710641 holds Active product status, ensuring continued availability and support. This substitute is suitable for applications where extended cable runs are acceptable or beneficial.

GLLPDLTE-B (Extended-Capability Substitute): The GLLPDLTE-B (Medallion II Permanent Antenna) represents a multi-band module antenna with significantly expanded frequency coverage (12 bands) and higher gain (3dBi). While it maintains IP67 ingress protection, ROHS3 compliance, and SMA termination, the antenna type differs (Module vs. Dome) and mounting is Stud-based. The GLLPDLTE-B is suitable for applications requiring broader frequency support across 2G, 3G, 5G, Bluetooth, Wi-Fi, and navigation standards. This substitute accommodates systems with more comprehensive RF requirements beyond the original GNSS4GDPSM-1M specification.

Frequently Asked Questions (FAQ)

Q: Can the 710641 directly replace the GNSS4GDPSM-1M in existing installations?

A: The 710641 provides functional equivalence for GNSS, GPS, GLONASS, and LTE applications with matching gain and VSWR specifications. However, the 5-meter cable length and Stud mounting differ from the 1-meter Connector Mount configuration of the GNSS4GDPSM-1M. Physical installation modifications may be required.

Q: What is the primary difference between the 710641 and GLLPDLTE-B substitutes?

A: The 710641 maintains the same antenna type (Dome), form factor, and gain as the original GNSS4GDPSM-1M, with the same series designation (4GDPSM). The GLLPDLTE-B is a Module antenna with expanded frequency coverage (12 bands) and higher gain (3dBi), suitable for multi-standard applications beyond GNSS/LTE.

Q: Is the GLLPDLTE-B suitable for GNSS-only applications?

A: Yes. The GLLPDLTE-B covers the required GNSS frequency bands (1.575GHz–1.61GHz equivalent coverage within 1.71GHz–2.17GHz range) and maintains IP67 protection and ROHS3 compliance. However, the expanded band coverage and higher gain may introduce unnecessary complexity for GNSS-only deployments.

Q: What are the mounting compatibility considerations?

A: The GNSS4GDPSM-1M uses Connector Mount termination with a 1-meter cable. The 710641 uses Stud mounting with a 5-meter cable. The GLLPDLTE-B also uses Stud mounting. Installation hardware and cable routing must be evaluated for each substitute based on the target system architecture.

Q: Are all three parts ROHS3 compliant?

A: The GNSS4GDPSM-1M and GLLPDLTE-B are explicitly ROHS3 compliant. The 710641 RoHS status is not specified in the provided data.

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