How do you correctly configure collocated AC4490/CL4490 systems so that the signals to not interfere with each other?

Each system/network should consist of only one server and can have one or more clients.

Each system should be configured with a unique RF Channel and System ID, which needs to match on the server and all clients in the same system. Two servers should never use the same RF Channel number in the same coverage area – the cross-talk between the two servers severely hinders RF communications, as explained in section 3.2 of the User Guide - CL4490

The RF Channel Number represents a specific hopping sequence and provides physical separation between collocated networks. Thus, all transceivers in a network must use the same RF Channel Number. For the purposes of configuring the units in the US, RF Channel can be set between 16 [DEC] & 47 [DEC]. With collocated systems, we recommend selecting RF Channel settings which are at least 4 [DEC] channels apart, to ensure the radios do not interfere with each other.  

The System ID is similar to a password character or network number and makes network eavesdropping more difficult. A receiving transceiver will not go “in range of” (connect to) or communicate with another transceiver on a different System ID.

Please reference the Quick Start Guide - Configuring the CL4490, which explains how to configure each system’s radios correctly with the RF Channel and System ID.

 Below is an example of what system settings for 3 collocated systems might look like:

System      RF Channel      System ID Setting

1                16                          101

2                20                          102

3                24                          103

The System ID can be set to anything between 1 and 255 and there is no requirement to space them apart. However, it is recommended not to start with “1”, as that is the default setting. If others are using the same radios, and are in range of your radios, they may also be using the default setting and could potentially interfere with your system.  In the above example, 101-103 was used so that the final digit in the System ID matched up with the system that was being configured.