Catalogue › Interference-resistant GNSS antennas › Gamma-100 in a vessel data chain: antenna, receiver and user equipment
Gamma-100 in a vessel data chain: antenna, receiver and user equipment

A practical look at the NavCom Gamma-100 interference-resistant GNSS antenna and its integration requirements.
The application
When navigation data serves several instruments, describe the complete path from reception to each end device. Gamma-100 is an interference-resistant GNSS antenna, not a pre-approved data source for every marine instrument. A physical interface name alone does not guarantee the required message format.
Agree these details before ordering
List the retained instruments and the connection arrangement. The antenna is specified for 24 V, up to 8 W and up to three interference sources. The new SKU 21381 must be distinguished from the older Gamma-100 navigation receiver; the old instrument’s package and approvals do not establish specifications for the new antenna.
Reading the specifications
The model specifies 4 antenna elements, up to 3 simultaneous interference sources and 24 V power. Read resistance ratings together with the stated source count and agreed application conditions. These figures do not define antenna gain or a guaranteed operating radius.
Package and installation
The stated package comprises the antenna, a stabilized supply, a 10 m antenna cable, a 10 m power/data cable, mounting hardware and documentation. Series dimensions are 280 × 210 × 81 mm maximum. Agree mounting details, mating connectors and the data format for the actual equipment.
Model specifications at a glance
- Antenna elements
- 4
- Simultaneously suppressed interference sources
- 3 maximum
- Interference resistance
- 110 dB with 1 interference source; 95 dB with 3 interference sources
- Supply voltage
- 24 V
- Power consumption
- 8 W maximum
- Operating temperature
- −40…+85 °C
- Storage temperature
- −55…+85 °C
- Mass
- 2.0 kg maximum
Questions and answers
Does this equipment suppress UAVs?
No. This description concerns the GNSS receiving path. UAV detection or suppression is not stated.
Does an RS-232 or RS-422 interface establish compatibility?
No. Agree the protocol, line parameters and interfacing equipment. The source does not provide a full list of compatible instruments.