How to listen?

You can tune and listen to RealMix 6185 Khz with a traditional shortwave radio, I have personally found Tecsun’s receivers to be good for 6 Mhz band.
Most often short waves are marked on the receiver with the letters ”SW” or ”KW”.
Reception is usually the best outside of the house and away from electronic devices that causes interference, External antenna also makes AM shortwave reception better.

Shortwaves can also be listened to easily with KiwiSDR remote receivers. (SDR means software defined radio)
Here is a list of good receivers, if one not working, or KiwiSDR is busy try another:

The best public KiwiSDR’s list at daytime:
-Tampere, Finland_ Tampere KiwiSDR
-Raisio, Finland_ Raisio KiwiSDR
-Kalix, Sweden _ Kalix KiwiSDR
-Värmland, Sweden _ Värmland KiwiSDR
-Stockholm, Sweden _ Stockholm KiwiSDR

At nighttime:
-Bayern, Germany _ Bayern KiwiSDR
-Aarhus, Denmark _Aarhus Kiwi
-Norfolk, UK _ Norfolk KiwiSDR
-Dalgety, Scotland_ Scotland KiwiSDR

Here is a screenshot of using KiwiSDR on a mobile device:

Also check the broadcast schedule

Have a good listening!