RW02280
Dick Mills operating the 'Delaware' in Room 10. The oscilloscope and frequency counter are essential for its operation. Note the two large patch panels, which accepted colour-coded pins containing different values of resistors. One panel dealt with control voltages, the other with audio signals. The XLR connectors behind these were intended for external connections. In this picture the mono PPM is connected to an 8-way switch box for checking multitrack levels.