
Installation of Antenna System BISCAYA AIS
The antenna system BISCAYA AIS consists of the antennas DELTA 200 S and DELTA 22 M, which are
mounted together building a unity.
Antenna position:
The antenna system BISCAYA AIS should be mounted at the mast-head. No other antennas should
be mounted above the antenna system.
Antenna cable:
For the antenna system BISCAYA AIS coaxial cables with a characteristic impedance of 50Ohm are used,
preferably Aircell-7 or Belden H2000 Flex. A BNC-plug is used to connect the DELTA 200 S, and an N-plug is
used to connect the DELTA22 M. ATTENTION! UHF-connectors (PL-connectors) may NOT be used for
this antenna system! Important: Keep the plugs strain-relieved! Optional disconnecting points at the
mast-heel are established with BNC- and N-connectors to avoid mix-up. Keep the antenna cables to the
distribution boxes AV403 and AV 205 as short as possible. Check the antenna cables for short circuit
before connecting them!
Assembling the antennas:
First pull the antenna cable with BNC-plug through the tube of the antenna holder AH 12 and through
the hole of the DELTA 22 M, and connect it to the DELTA 200 S. Pull the antenna cable with N-plug
through the hole of the antenna holder AH 12 and connect it to the DELTA 22 M. Finally put together
the antennas and screw them to the antenna holder.
Important: All metal parts of the antennas as well as the connectors must not have electrical
contact to other metal parts of the ship because the shield of the cable is connected to the
negative element of the power supply.
Install the distribution boxes AV 403 and AV 205 below deck near the instruments connected.
Installation of the distribution box AV 205:
Connect the antenna cable to the AV 205 terminal „Input: Antenna DELTA 200 S“. Connect the VHF
radio telephone to terminal 5 „UKW-Funktelefon (VHF)“. This is the only terminal with UHF-connector
to avoid confusion. Connect the remaining instruments to terminal 1 to 4 of the AV 205 using BNC-
connectors (see AV 205-cover for association). None of the instruments connected to this antenna
system may be connected to ground.
Installation of the AV 403:
Connect the antenna cable to the AV 403 terminal „Input: DELTA 22 M“. Connect the AIS Receiver to
terminal „OUTPUT: AIS / DSC“, using a coaxial cable of 50 Ohm characteristic impedance with a BNC
connector. Use F connectors and coaxial cable of 75 Ohm characteristic impedance to connect the FM
radio and the TV to Output 1+2 DVB –T /T – DAB.
Power supply:
Important: Do not switch on the power supply before the installation is completed!
Use a switch or cutout of the switch board for the power supply to switch off the antenna system when
none of the receivers connected is in use.
For the operation of the antenna system BISCAYA AIS it is important that the distribution box AV 205
is connected to the power supply before (or as soon as) the receiver instruments connected to the
AV 205 are switched on; else faulty operation may occur (antenna alarm, incorrect calculation of
position, etc.). The power supply to the antenna system need not be switched on for the
operation of the VHF marine telephone.
Connect the blue lead of the AV 403 power supply cord to the negative element and the brown lead to
the positive element of a 12V or 24V power supply.
Connect the blue lead of the AV 205 power supply cord to the negative element and the brown lead to
the positive element of a 12V or 24V power supply. The yellow/green lead of the AV 205 power
supply cord has to be connected to a good ground.
Not all receivers are able to handle the antenna voltage from the DELTA 200S without producing
interference. Therefore the output level of the corresponding wideband output can be reduced by
adjusting the associated trimmer potentiometer counter-clockwise until the reception is clear again.