Just received a link to an excellent resource on UVB-76 voice messages history at http://sites.google.com/site/stationuvb76/oct2002 (Thank you, Robert!). I have no idea how this has been collected, but at first glance the content seems plausable.
The site also has some in-deep technical details about the station, http://sites.google.com/site/stationuvb76/january-2009 what seems to be a translation and modification from old geocities archive page in russian of unknown origin. This information at the last link looks most credible to me so far (I do speak russian, therefore I can assure that this is mostly the same data as seen on the January-2009 link above), but I havent been able to track it down to any other source in Russia.
However, there is a very nice gallery of UVB-76 station antenna set at http://kspzel.livejournal.com/11908.html and http://alex-odn.livejournal.com/12148.html These pictures, however, do have slight credibility problem, as the setup looks decommissioned at the time when station is definitely transmitting, so either the location of the picture is off or the station has moved .. or this really looks like that ... no idea. Also, the antenna configuration is different (or dipoles have been removed from towers):
Horizontal dipole VGDSh (ВГДШ if you want to google in russian) as by description:
Antenna configuration as deemed present by photos: