The SP DX Contest is an international amateur radio contest organized by the Polish Amateur Radio Union and SP DX Club. It takes place over the first full weekend of April using CW and phone modes on HF bands from 160-10 meters. Participants exchange signal reports and serial numbers or Polish voivodeship identifiers to earn points for contacts with different stations and multipliers for working stations in different countries or voivodeships. There are several categories for single operator and multi-operator entries. Certificates are awarded to top scores and logs must be submitted by April 30th.