For this reason, the Experimental Danish Radio Amateurs association (EDR for short) will activate four special radio stations with the call signs OZ5ØHRH/xx, 5PØHRH/xx and from Greenland the call signs OX5ØHRH and OX5HRH.
On May 26 from 00:00 UTC until 23:59 UTC, these four call signs will be active on many Amateur Radio bands and with CW, SSB, RTTY and several digital modes. All bands, including WARC-bands, and all modes may be used. Exceptions are cross-mode, cross-band contacts and contacts via repeater or echo-link.
With FT and JT modes the call signs 5PØHRH/xx and OX5HRH will be used.
For more information please visit: https://www.qrz.com/db/oz50hrh