The Experimenterende Danske Radioamatører (EDR) (in English, Danish Amateur Radio Experimenters) is a national non-profit organization for amateur radio enthusiasts in Denmark.

Membership benefits of EDR include the sponsorship of amateur radio operating awards and radio contests, and a QSL bureau for those members who communicate with amateur radio operators in other countries.

[1] EDR is the national member society representing Denmark in the International Amateur Radio Union.

[2] EDR publishes a membership magazine called OZ.

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