Electromagnetic Interference from Heated Gloves May Compromise Avalanche Transceiver Function

Area of Science:

• Avalanche safety
• Search and rescue technology
• Electromagnetic compatibility

Background:

• Rapid location of avalanche victims is critical to prevent asphyxiation.
• Avalanche transceivers are essential tools for locating buried individuals.
• Potential interference with electronic devices in cold environments is a concern.

Purpose of the Study:

• To investigate the impact of electromagnetic interference from heated gloves on avalanche transceiver performance.
• To determine if heated glove elements affect transceiver signal reception or transmission.

Main Methods:

• Tested commercially available heated gloves from 3 manufacturers.
• Evaluated 3 common brands of avalanche transceivers during simulated searches.
• Measured distance to target beacon at first signal detection and directional accuracy.

Main Results:

• Activated heating elements in gloves caused electromagnetic interference, degrading transceiver signals.
• Heated gloves significantly reduced the distance of first signal detection (P<0.001).
• Reduced detection distances varied widely, from 1.9 m (5%) to 41.5 m (94%) depending on the transceiver.

Conclusions:

• Avalanche transceivers are susceptible to electromagnetic interference from heated gloves.
• Using heated gloves during transceiver searches is not recommended due to potential search delays.
• Safety recommendations should consider the impact of electronic devices on rescue equipment.