Beacons and Sleds:
http://www.backcountryaccess.com/2010/03/26/beacons-and-snowmobiles-dont-search-from-your-sled/
Beacons and Electronics:
http://www.backcountryaccess.com/2012/11/19/issw-2012-avalanche-beacons-and-electrical-interference/
Bottom lines....
1. Get off your sled to do a beacon search
2. keep a transmitting beacon a minimum of 6-10" away from electronics or metal.
3. keep a receiving beacon a minimum of 12-20"
http://www.backcountryaccess.com/2010/03/26/beacons-and-snowmobiles-dont-search-from-your-sled/
Beacons and Electronics:
http://www.backcountryaccess.com/2012/11/19/issw-2012-avalanche-beacons-and-electrical-interference/
Bottom lines....
1. Get off your sled to do a beacon search
2. keep a transmitting beacon a minimum of 6-10" away from electronics or metal.
3. keep a receiving beacon a minimum of 12-20"