Dantronik RT 5000 S
It's not too difficult to make the Dantronik RT-5000 R marine VHF suited for the reception of AIS by adding a discriminator output
The receiver IC is a TA7130. The demodulated signal can be found on pin 7.
Dantronic RT 5000
Pin 7 contains the baseband audio
Because pin 7 of the TA7130 is hard to reach from the component side, a connection is made on the solder side of the circuit board.Follow the next steps to make the discriminator output:
The connection to pin 7
Shielded cable with 3.5 mm male connector