TCS 12 schematic. Dallas on Nov 5, 2003Re: TCS 12 schematic. Benard F. Drew on Nov 8, 2008TCS-12 AC power supply circuits. Richard Hankins on Nov 8, 2003re T1509. walter james boyle on Jul 25, 2005T1509 photo. Richard Hankins on Jul 25, 2005Admiralty T1509 Transmitter [serial : 1401]. Don Collie jnr on Dec 25, 2007AC power supply for TCS 12. Erwin David, G4LQI on Feb 14, 2004AC power supply for TCS 12. GEORGE KLADIS on May 22, 2004