OEM Components & Technology MG-A8

MG-A8

Compact, robust multi-purpose
GNSS antenna

Dual-constellation, double-frequency
with L-Band DGPS corrections

Dual-constellation, double-frequency with L-Band DGPS corrections

Product Info

Dual-constellation, double-frequency GNSS antenna for high accuracy in everyday work

The Topcon MG-A8 antenna is designed for navigation and precise positioning in marine applications. It provides exemplary GNSS signal tracking while not being susceptible to signal jamming from other sources, such as Inmarsat communications.

The MG-A8 can be used in DGPS mode for meter level navigation purposes but can also be used for RTK centimeter-level positioning in areas where there is a network of reference stations available to support this level of precision. With its RTK capabilities, L1 and L2 signal reception, L- band corrections and INMARSAT rejection, the MG-A8 is perfectly suited for applications such as dredging in inland river channels and waterways.

  • Ideal for Marine Applications
  • Tuned for mitigating in-band interference
  • Compact Dual Frequency package that supports L-band and RTK
  • INMARSAT signal rejection

MG-A8 is perfect for:

FIND A DEALER
Compare to Similar Products:
Specifications

MG-A8 Specifications

Print  
Physical and Environmental
Operating Temperature
-40°C to +70°C
Differential Propagation Delay (typical)*
L1, L2 7ns
Size
Diameter: 89 mm
Height**
102.5mm
Weight***
250g
Storage Temperature
-40°C to +70°C
*Maximum
**Without adapter
***Antenna without adapters
Certifications and Standards
Dust/Water Protection
IP6x IEC 60529
IPx7 IEC 60529
Vibration Rating*
1 hours per axis
2 hours per axis
Shock Rating**
Multiple shocks, 25g / 6µc,1000 bumps per axis
Humidity***
Aggravated cycle
Salt Fog****
5% salt solution concentration, 96 hours
RoHS Compliant
Yes
*MIL-STD-810G Common/Watercraft-marine
**IEC 60068-2-29, Test Eb
***MIL-STD-810G, Method 507.5 Procedure II, item 2.4.2. Table 507.5-IX
****MIL-STD-810G, Method 509.5
Performance
Operating Frequency Range
Upper 1520-1590 MHz
Lower 1215-1260 MHz
Noise Figure
1.5 dB (typical)
LNA Gain
35 dB (typical)
VSWR
≤2.0: 1
Out-of-Band Rejection
GPS L1 ±100 MHz: -40 dBc (typical)
GPS L2 ±200 MHz: -50 dBc (typical)
(1625 -1660) MHz: -30 dBc (typical)
Power and Electrical
Input Voltage Range
+3 to +18 VDC
Power Consumption
60 ± 5 mA (typical)
Mounting
Mount Type*
M24 x 1.5 external thread
5/8-11 internal thread
*Without/With adapter
Connectors
Connector
TNC female
Physical and Environmental
Operating Temperature
-40°C to +70°C
Differential Propagation Delay (typical)*
L1, L2 7ns
Size
Diameter: 89 mm
Height**
102.5mm
Weight***
250g
Storage Temperature
-40°C to +70°C
*Maximum
**Without adapter
***Antenna without adapters
Certifications and Standards
Dust/Water Protection
IP6x IEC 60529 IPx7 IEC 60529
Vibration Rating*
1 hours per axis 2 hours per axis
Shock Rating**
Multiple shocks, 25g / 6µc,1000 bumps per axis
Humidity***
Aggravated cycle
Salt Fog****
5% salt solution concentration, 96 hours
RoHS Compliant
Yes
*MIL-STD-810G Common/Watercraft-marine
**IEC 60068-2-29, Test Eb
***MIL-STD-810G, Method 507.5 Procedure II, item 2.4.2. Table 507.5-IX
****MIL-STD-810G, Method 509.5
Performance
Operating Frequency Range
Upper 1520-1590 MHz Lower 1215-1260 MHz
Noise Figure
1.5 dB (typical)
LNA Gain
35 dB (typical)
VSWR
≤2.0: 1
Out-of-Band Rejection
GPS L1 ±100 MHz: -40 dBc (typical) GPS L2 ±200 MHz: -50 dBc (typical) (1625 -1660) MHz: -30 dBc (typical)
Power and Electrical
Input Voltage Range
+3 to +18 VDC
Power Consumption
60 ± 5 mA (typical)
Mounting
Mount Type*
M24 x 1.5 external thread 5/8-11 internal thread
*Without/With adapter
Connectors
Connector
TNC female

Get support where & when you need it-
for all your Topcon products.

Online Support

A simple, free login entitles you to the following benefits:

  • Downloadable product manuals
  • Video tutorials and quick guides
  • Comprehensive training and documentation
  • Dealer assistance with any tech issues
Create a free myTopcon account
Extend Your Benefits

Register your product now to receive additional support including: 

  • Automatic firmware updates
  • One free Support case per registration
  • Access to Topcon Professional Support 
Register your Product

We've got you covered

Need more info?

We can email you additional product information. Your contact information will never be shared.

Reach out

Reach out to one of our partners for more information or a price quote. Use the link below to find an expert in your area ready to help your business software needs.

View the event calendar

Topcon Agriculture America's
W5527 Hwy 106
Fort Atkinson, WI United States
For more information, and to locate a dealer closest to you, visit:
https://www.topconpositioning.com/#dealerModal
©2025, Topcon Positioning Systems, Inc.