VHF MARINE SAR AIS Preamplifier with BandPass Filter

This VHF MARINE SAR AIS Preamplifier is designed to enhance weak VHF Marine SAR and AIS signals in the range 155–163 MHz and extend their reception range.

 

Where to use VHF Marine AIS Preamplifier:

• Search and Rescue Frequency 155.160 MHz (National SAR common)
• Marine VHF radio
• VHF maritime mobile band in the frequency range 156.0 MHz to 162.050 MHz

 

VHF MARINE SAR AIS Preamplifier Appearance:

VHF marine SAR (Search and Rescue) AIS preamplifier is specialized, LNA-designed to boost weak signals from AIS-SART (Search and Rescue Transmitters) or AIS-equipped MOB (Man Overboard) devices, operating specifically on AIS channels 1 & 2 (161.975 MHz and 162.025 MHz)

VHF MARINE SAR AIS Preamplifier is crucial for increasing the detection range of distress signals, particularly when MOB devices are close to the water surface, limiting their range.

Key Aspects of VHF MARINE SAR AIS Preamplifier:

• Optimal Reception: LNA is designed for the 155–162 MHz marine band ensures high sensitivity.
• SAR Application: Enhances the reception of AIS-SART signals, enabling faster, more accurate SAR locating.
• Range Enhancement: By reducing the noise figure at the receiver end VHF MARINE SAR AIS Preamplifier will improve the reliability and range of AIS data in marine environments.
• For hobbyists, this VHF MARINE SAR AIS Preamplifier is alongside SDR dongles for increased range in receiving SAR AIS signals.

It features a low-loss input bandpass filter to protect against interference from out-of-band stations, preventing overload. For optimal performance, the preamplifier should be installed as close as possible to the AIS -SAR antenna. The length of the cable connecting the Marine SAR and AIS preamplifier to the receiver or SDR dongle is not critical, as the preamplifier compensates for cable loss and improves sensitivity, often enhancing performance by up to 150%

 

155 – 162.05MHz MARINE SAR AIS Preamplifier Gain:

HF 1 – 30MHz <-57 dB
50 MHz -51 dB
70 MHz -37 dB
155 MHz +24.7 dB, NF=0.8 dB, Input RL -15 dB, IP3out > 37 dBm
162 MHz +24.7 dB, NF=0.8 dB, Input RL -15 dB, IP3out > 37 dBm
288 MHz -33 dB
432 MHz -11 dB
Power consumption +12 V, 120 mA
Connectors: “N” Female

 

VHF MARINE SAR AIS Preamplifier Gain Characteristics

 

Just AIS Preamplifier is here:

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