Book Cipher Transmission
Decode the Hawking key
Resolve the coordinates with your own copy of Stephen Hawking's A Brief History of Time. Format: chapter.page.line.word. The four clues stay in phrase order.
ABHOT
3.142.6.4
1.21.11.2
6.87.3.9
8.204.5.1
Signal locked. Awaiting the phrase.