Question:  I recently bought 3 WBS-670 B4 frequency band systems for use in a facility, they are in separate rooms about 100 feet apart.  so they will see each others RF signals.  How do I frequency coordinate the systems so that they don't interfere with each other, can I use sequential groups / channels to make the frequency settings?
Answer:  No do not use sequential groups / channels like 01a, 02a or 03a to program the three systems.  These groups use similar base station receiver frequencies so it is quite possible that system one could hear system two and or system three.  The best way to frequency coordinate the multiple systems is to use the Clear Scan feature to find clean compatible frequencies for all three systems.  Clear Scan the first system, after the best group / channel is selected, leave that system on and power up the second system, run Clear Scan, after it is completed and the group / channels are selected power up the third system and run Clear Scan on it, once the best group / channels are selected the three systems should be on compatible frequencies that will not interfere with each other.