Pulse Code Modulation And Demodulation Trainer is an SSI India product in the Communication Trainer category. Key specifications include SKU: PCT-E164. AC Source: Sine Wave Variable frequency of Approx 50Hz. With Variable Amplitude of 5Vp-p. Fixed DC Power Supplies +5V,+5V DC, 250mAa. Operated on Mains power 230V, 50Hz +10% Components