ACU3 Antenna Changeover Unit

Part Number: 101192

Jotron Antenna Changeover Unit, ACU3 is an antenna relay that switches the antenna between two transmitters or transceivers, configured either as Main/Standby units or general A/B units. The ACU3 can be fastened to a DIN rail with clips or mounted to the wall of a sub-rack.

Also available: ACU Antenna Changeover Unit

ACU3 Antenna Changeover Unit – operating modes:
The unit can operate in different modes. Mode selection is done with the DIP switch located on the board inside the unit.

There are two distinct modes of operation, one is key controlled, and the second is alarm controlled. In key controlled mode, the ACU will select the transmitter that is keyed and stay on that transmitter until the other transmitter is keyed. The other main mode is Alarm controlled. In this mode the ACU3 relay is controlled by the alarm state of the transmitters. Each mode has different options that can be enabled or disabled.

The original ACU can handle up to 200W on the RF ports and is designed for sub rack mounting (3U).
ACU2 is a smaller device designed for DIN rail mounting and will accept a maximum of 50W on the RF ports.
ACU3 is similar to the ACU2, but is designed to handle antenna switchover in a VoIP controlled radio system.
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