I recently had the pleasure of a QSO on HF with WM0G, the president of the BARC via the club's remote HF station. See the web page at http://www.qsl.net/w0dk/hfremote.html
for details on how the system is set up. This was in the middle of the night, the station's 100W signal reached from the Gulf of Mexico to NE Ohio judging from 2 contacts with WM0G that I overheard. The internet link is via Skype, the only way I could tell the connection was through the internet was a slightly "hollow" sound on the audio typical of VOIP links in general, I sometimes hear the same thing on VOIP calls over Yahoo IM.
It's still in beta testing per WM0G. The intent is to ultimately make the HF remote station accessible to members of the BARC from wherever they may be on the internet.