Address:18 Jiuxianqiaozhonglu, Chaoyang District, Beijing, China Zip:100016
MAM 7G and MAM 8G integrated information microwave transmission equipment Frequency range: 6.4 – 7.1GHz, 7.1 – 7.4GHz, 7.4 – 7.7GHz, 7.7 – 8.2GHz
l Transmission capability: 1 PAL video and 4 audio and 60 analog carrier telephone, data, 30 PCM telephone per RF channel. 8 RF channels per station.
l Transmission mode: Unidirectional and bi-directional; point to point
l Transmission distance: ≤50km (May be relayed) l Modulation mode: FM
Features:
1. All solid state, high integration, high reliability. 2. IF modulator and demodulator with broadband, high linearity and high stability. 3. Audio program sub-carrier modulator adopt phase-lock technology resulting high frequency stability, small nonlinear distortion. Demodulator adopts digital technology resulting simplified circuit, good linearity and low noise. 4. 1+1 back-up mode is available. 5. AC or DC mains power supply.
Main specifications:
1. Frequency range: 6.4 – 7.1GHz, 7.1 – 7.4GHz, 7.4 – 7.7GHz, 7.7 – 8.2GHz 2. LO frequency stability: Better than ±5×10-6 3. Transmitter power: ≥1W 4. Receiver noise figure: ≤3dB 5. IF: 70MHz±7kHz 6. IF impedance: 75Ω (unbalanced) 7. Transmitter IF input level: +5.2dBm 8. Receiver IF input level: +5.2dBm 9. Receiver AGC range: 50dB 10. Receiver squelch level: -74dB 11. Specifications of TV, audio, analog carrier telephone, PCM digital telephone and data transmission are all up to international standard.
12. Mains power supply: 220VAC±10%, single phase 240VDC±3V
13. Operating temperature: Indoor parts ––– 4℃ to 40℃
