What multibyte character encoding convention is this?

[Robert Nicholson]

Can anybody tell me what convention are these Mail headers using?
What is the convention being used here for encoding these mulitbyte  
chars?

From: "<B6><F3><BC><B1><C1><D6>" <yo...@hotmail.com>
Reply-To: "<B6><F3><BC><B1><C1><D6>" <yo...@hotmail.com>
To: rob...@elastica.com
Subject:  
<<B0><A1><B0><DD><C0><CE><C7><CF>><B0><ED><C5><EB><BD><BA><B7><B1> <BE>
<EE><B8><D3><B4><CF><C0><C7> <B0><FC><C0><FD><BF><B0>!