Letters, Letters, Letters Mystery Cache

The cache is not at the posted coordinates (but you might find me there a few nights a week).  You need to solve the following puzzle to find the GZ which is somewhere within 2 miles of the posted coordinates.

JJZM - XDZA - RXCX - PTWE - GBRM - WYZK - ZCMW

JXXE - XAVZ - ZKNQ - XEJA - GVKA - YMYF - XECD - NPBE

ZFNQ

Geocaching puzzles seem to have so many letters in them nowadays. Can someone (besides me of course) come up with a puzzle that doesn’t have so many letters? Getting the green light on the geo-checker makes people happy so I hope this cache gets lots of green lights. Come on guys, you can do it!

You can validate your puzzle solution with certitude.