Thanks to feedback from the community,
I have created a steam guide showing the location of the keys
for Chapter 1 and Chapter 2 of TV189.
I chose to do this as an optional last resort for people who
are struggling to find them.
I advise you do not use them and try to find them yourself first, using
hints given in the radio messages. Secondly id like to wish everyone
who has purchased/been involved in TV189 a MERRY CHRISTMAS!