DUB DISCUSSION BOARD

aaaaar its ok , after double checking n a lil scratching of the head i believe it goes nowhere..
Should have Dub Siren finished in a couple of days so will post back any good/bad findings that i come across

Hi all , heard great reports about the Dub Siren , ive downloaded the Schematic but can anyone point me in the right direction as to where Pin3 of U1 goes , it seems to be floating , is this correct or am i missing something.

http://www.interruptor.ch/sirenschematic.doc

Thanks in advance JT.