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ES8TJM - Paatsalu - "714" - AIS RECEIVER

Receiver station is home made.
Radio including vhf receiver board (bf998 amp, helican filters and SA612 mixer).
10.7MHz IF filter is 30Khz BW and 455Khz filter is 25KHz...
IF/detector board(MC3361) & AIS GMSK (cmx589 & ATMEGA8) digital modem board...
Synthesizer with arduino controller and Adafruit Si5351A synthesiser board.
Receiver can receive two AIS channels (161.975MHz & 162.025MHz) with 40second changing interval.
Antenna is home made coaxial collinear (8x).
At the bottom of antenna is a home made low-noise preamplifier(FET GaAs).
Computer is old Dell D-600 notebook, Windows-Xp and any unnecessary hardware and software is removed. Using AIS Dispatcher or Shipplotter software.


Some pictures of my AIS receiving station...


Ais receiver done...


Ais receiver open rx side...


Receiver synthesizer side open.


Synthesiser


Antenna making process


Antenna making process


Antenna making process


Antenna making process


Antenna on mast


Antenna preamp



Receiver first (old) version pictures...