Due to the recent changes by the owner of 
SDR.hu (like putting up a login screen and limiting access to radio amateurs) I've taken down my Penn State kiwiSDR radio for now. Another concern is the open-sourcing of the software that runs on the BeagleBone PC without any obvious security measures for owners who, in many cases, are running the system inside their firewalled networks. Once these issues are addressed I'll bring back the radio but, for now, it's offline. There are still a lot of other radios on the kiwiSDR network and you can get around the questionable barrier on 
SDR.hu by going to the site 
http://kiwisdr.com/public/ to access all the same radios.