Um, what?

Well, I found this from Wikipedia, it's the closest thing I could find that was relating to the band and 187:

Quote Originally Posted by Wiki
In one interview, Travis stated that the "182" was the U.S. radio codeword meaning 'homicide' (apparently confusing "182", the radio codeword for conspiracy, for "187").
Other than that, I have no clue where you heard "Blink 187" from.