WIDEn-n for base stations and WIDE1-1,WIDEn-n for mobile stations are the most recommended packet paths in Europe. Keep n number in WIDEn-n as low as possible, i.e. WIDE2-2 or WIDE3-3. Then you do not become the source of QRM in the network.
Visiting Poland you can use in your mobile the European
standard packet path WIDE1-1,WIDEn-n. In some areas n is
restricted to n≤3 or even n≤2. Moreover, in the entire
country you can use WIDE1-1,SPn-n which is not limited.