Greek Capital Letter Kappa
HTML Entity Browser Test:

U+039A is the Unicode hex value of the character Greek Capital Letter Kappa, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

Unicode Character Information
Unicode Hex U+039A
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Mirrored N
Lowercase Version U+03BA
Unicode Character Encodings
Greek Capital Letter Kappa HTML Entity Κ (decimal entity), Κ (hex entity)
Windows Key Code Alt 0922 or Alt +039A1
Programming Source Code Encodings Python hex: u"\u039A", Hex for C++ and Java: "\u039A"
UTF-8 Hexadecimal Encoding 0xCE9A
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 0922) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +039A) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Greek Capital Letter Kappa character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.