This is a WebSDR receiver located in Athens-Greece
It is operated by Stavros (SV1RVL)
More information about the WebSDR project can be found on http://www.websdr.org.
If you use Chrome and have no audio, a workaround is to switch off Chrome's new autoplay policy, by typing chrome://flags/#autoplay-policy in the navigation bar and changing this setting from "Default" to "No user gesture is required". Then restart the browser