Raymarine 45STV User Manual page 21

The RF cables from the antenna base plate connect to either the
LNB, ANT, or Satellite In connector on the rear of the IRD.
Refer to the relevant Manufacturer's handbook for details on
configuring IRDs.
Connecting four IRDs
You can connect four IRDs to your antenna as shown in the
following diagram.
RF cable
ACU
MADE IN KOREA
ANT RF1
- +
-
+
DC 9 to 30V FUSE NMEA
Power in
Installation
Antenna base plate
RF 1 RF 2
RF 3 RF 4
IRD1 (not supplied)
IRD2 (not supplied)
IRD3 (not supplied)
IRD4 (not supplied)
RECEIVER
PC INTERF ACE
The RF cables from the antenna base plate connect to either the
LNB, ANT, or Satellite In connector on the rear of the IRD.
Refer to the relevant Manufacturer's handbook for details on
configuring your IRDs.
Connecting more than four IRDs
To connect more than four IRDs to your antenna, you need to
fit a suitable multiswitch, and connect as shown in the diagram
appropriate to your area.
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