C-Nav Hardware Reference Guide
52
IALA Whip Antenna Dimensions
This antenna, referred to as an E-field whip antenna, is sensitive to the
electrical field of contained in the base of the MBA-3, which together
amplify signals in the 283.5 to 325.0 kHz frequency band.
The MBA-3 is compatible with standard marine threaded mounts (1-14-
UNS), and must be grounded for optimum performance. The MBA-3
antenna is constructed with a nylon base and a fiberglass whip antenna.
Operational Specifications
Item Specification
Frequency Range 283.5 - 325 kHz
Gain 20 dB
Pre-Amplifier Integral Low Noise Amplifier
Power Specifications
Item Specification
Input Voltage 10-14 VDC supplied by receiver
Input Current 10 mA
Mechanical Characteristics
Item Specification
Enclosure Fiberglass and threaded nylon
Mounting Thread 1-14-UNS-2B
Length 371 mm (14.6”)
Diameter 39 mm (1.5”)
Weight 176 g (0.39 lb)
Ground Wire Length 1.3 m (51.0”)
Antenna Cable Pig Tail 297 mm (11.0"), or 3.0 m (10')
Antenna Connector BNC-S
Antenna Extension Cable RG-58U, < 150 m (450 ft) in Length
Environmental Specifications
Item Specification
Storage Temperature -40°C to 80°C
Operating Temperature -30°C to 70°C
Humidity 100% Condensing
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