A DAB radio powered by batteries, a hand crank or solar energy will be useful for receiving announcements. NRK P1 is the channel for crisis information. It is also worth charging a power bank and preparing spare batteries. If the mobile network is down but the internet is available, calls via Wi-Fi or a pre-agreed app may be an alternative.
DSB and Nkom recommendations. Norwegian guidance recommends preparing to manage independently for a week. Household supplies should include around 20 litres of drinking water per person, food, and items needed to stay warm and provide lighting. The official brochure is also available in Polish.
DSB — guide in Polish. To begin with, one concrete step is enough: agree with one person where you will meet if you cannot reach each other by phone. Also check where each of you will get information. It is worth having such a plan ready before you need it.