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McMurdo PLBs | Activation

Last Updated: Aug 13, 2019 02:44PM IST

Activation

The McMurdo FastFind 220 and Ranger PLBs are activated by manually deploying the antenna, pulling the anti-tamper seal and pressing the ON button, in an emergency situation. Once activated the McMurdo PLB transmits two signals simultaneously via the 406MHz professional global emergency service and the 121.5MHz homing signal to speed up local recovery.

The PLB typically begins transmitting on the 406MHz frequency within 5 minutes, but can be up to 45 minutes depending on satellite coverage. The start of the 121.5 MHz secondary homing transmitter signal means that Search and Rescue teams have been deployed, they are able to home in on your exact location. 

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