UHF CB Radios are used for field communications in addition to Police VHF radios. 

GPS units are used as navigation aids in the field.

Avalanche transceivers are used during snow searches.

Personal Locator Beacons are recommended for parties visiting remote areas.

Mobile phones can provide communications in remote areas

Battery packs can provide a backup power source for mobile phones

Setopress bandages can be used to treat snakebite and sprains

Steep snow and ice equipment is used for specialist rescues in alpine terrain.

Heavy duty pants are good to have when searching in the bush.

Spot tracking devices can provide status and emergency messages via a satellite network.  

Bothy shelters are very simple rectangular tents with no poles or floor.