When the signals from two or more buried transceivers are closely aligned, preventing flagging or marking features from functioning.
Occasionally, the flagging or marking feature won’t work on a transceiver because there is signal overlap. Each transceiver transmits a signal with a unique cadence and strength. It becomes more difficult for a transceiver to separate these signals when there are three or four victims, or when the victims are close to each other because their signals are more likely to overlap.
![](https://avalanche.org/wp-content/uploads/2022/11/signal-overlap-edit-600x319.jpg)
Signal overlap makes it difficult for your beacon to distinguish between two separate burials. Credit: T. Lund