Puzzle 17

Another puzzle for you today, this is an example of the Beaufort Cipher. I will post a solution in a week.

R D L T Y D H Q R H W S J A A R L E A O O C L Y U
U Y N J T G R I O X B L D M M V D E O U P L R A Q
E D E O X B I S P B L F T F K P L Y Y V W C Z W A
D R H M N G T N V U U Y D R H M N Z N S E C U W T
C W M J C Z L B L P C O Y D P X P B L Y U U Y N V
D E C R Z C B N D Q Q R D I Y O D E M N H C V Y O
M R I S L Y Y U G R I

Please do not post the solution in the comments, but do feel free to hint if asked. The solution will appear on one week.