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Operators and Installation Manual RA-2500 AIS Receiver.pdf - Jotron

Operators and Installation Manual RA-2500 AIS Receiver.pdf - Jotron

Operators and Installation Manual RA-2500 AIS Receiver.pdf - Jotron

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For optimum performance of the transponder approximately +10dB gain should be available<br />

when the cable attenuation has been subtracted from the GPS antenna preamplifier gain. Note<br />

that Procom <strong>AIS</strong>2/GPS <strong>and</strong> Comrod AC17-<strong>AIS</strong> are combined VHF/GPS antennas <strong>and</strong> additional<br />

attenuation from connectors/ diplexer must be taken in consideration. Some examples below:<br />

Cable Type Antenna Preamplifier Gain<br />

(dB/100m)<br />

Recommended cable<br />

length (m)<br />

RG58 Procom GPS4 30

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