In order to get the coordinates for this cache, you will need to complete the Adventure Lab cache 'Marconi's Legacy'. Details on how to access this are below:
The associated Adventure Lab contains four locations which all count towards your geocaching statistics and total finds. To get started first download the Adventure Lab app onto a smartphone, which I would recommend doing prior to leaving home.
For Android phones it can be installed here
For iOS phones it can be installed here
Once the Adventure Lab app has been downloaded onto your smart phone, sign in using your usual Geocaching details, then either use the ‘Discover’ or ‘Explore’ option on the app to select the Adventure titled 'Marconi's Legacy'.
You can also use a QR code scanner on your mobile phone to scan the code here.
Once at the location, read the description and then start the trail to visit either 3 or 4 locations along a linear walk of 1.5-2.5 miles depending on how you are feeling! At each stage a question will require an answer.
Good luck!