AM Broadcast Technical standards Broadcasting Standards as per

AM Broadcast Technical standards

Broadcasting Standards as per ITU-T(Region 3) Medium Wave Broadcasting • • MW Band: 535 to 1705 k. Hz. Pune A station: 792 k. Hz Channel Width (Spacing): 9 k. Hz/ 10 k. Hz Modulation Index: 0 to 1(Dynamic), Average: 7080% Frequency Deviation allowed: +/- 10 k. Hz. Frequency Response: +/- 0. 5 d. B Signal to Noise Ratio (SNR): 60 d. B Distortion is limited to: 4 % max.

Medium Wave Broadcasting • Transmitter Impedance: 230 ohm for<High Power Transmitter : 120 ohm for High Power Transmitter : 60 ohm for Super Power Transmitter • Transmitter Efficiency: 60 -70 % • Spurious Radiation: 60 d. Bc • Transmitter Power: Super Power Transmitter > 1 MW High Power Transmitter > 100 KW Less than HPT < 100 KW • Transmitter Antenna: Monopole Antenna

Short Wave Broadcasting • • • SW Band: 3 to 30 MHz. Channel Width (Spacing): 5 k. Hz Modulation Index: 0 to 1(Dynamic), Average: 70 -80% Frequency Deviation allowed: +/- 10 k. Hz. Frequency Response: +/- 0. 5 d. B Signal to Noise Ratio (SNR): 60 d. B Distortion is limited to: 4 % max. Transmitter Impedance: 50 ohm /300 ohm Transmitter Efficiency: 60 -70 % Spurious Radiation: 60 d. Bc

Short Wave Broadcasting • Transmitter Power (Available): 10 KW, 50 KW, 100 KW, 200 KW, 1 MW • Transmitter Antenna: Dipole / Array Antenna • Regional SW Tx Service (Distance Covered): 700 – 800 Km. • National SPT: Aligarh, Chinchora ( Near Calcutta), Nagpur, Rajkot • International Services: Delhi, Aligarh, Goa, Calcutta