After a few months of inactivity, 50 MHz beacon SV1SIX is back on the air.
It transmits on 50040 kHz in F1A (frequency shift Morse code), sending the following message: SV1SIX LOCATOR KM17UX ATHENS 30W ERP.
Today I discovered that the digisond of the National Observatory of Athens host an alternative website with different skin but with the same basic information. The address is http://noa-dps.astro.noa.gr/ and I don't know if it is a permanent service or some provisional or experimental feature.
Their main site at http://www.iono.noa.gr/ is again fully operational.