problems with char 247

Hi All

My db is in hebrew and i have problems to select using regex where the word
end with ascii char 247.

This work, but it dont distinguis between whole word and partial:
SELECT l_name from links where l_name ilike '%צדק%';

This dont work, return nothing.
SELECT l_name from links where l_name ~* '[[:<:]](צדק)[[:>:]]';

If i drop the 'ק' ( char 247 ) i get the list as i suppose to be with the
'ק'.
SELECT l_name from links where l_name ~* '[[:<:]](צד)[[:>:]]';

This are the chars searched for:
צ - 246
ד - 227
ק - 247

Any idea ?