fm modulator

fm modulator With the rapid development of rural broadcasting, security, stability, reliable broadcasting in radio products have become an indispensable part. In order to better serve the market, serving customers, I concluded many years of development and production based on the conclusion, summarize the views of many domestic clients to improve the introduction of this new FYFM-2D transfer frequency FM modulator devices. It is at this stage of cable television cable transmission system, the towns and villages and village radio and television stations to broadcast radio room the best equipment, it can also be widely used in factories, mines, offices, military units, schools and other units of the venue of the sound, expanded tone. Characteristics: 1 19-inch 1U standard chassis; 2 FM digital tuner to receive FM; 3 50 stations frequency memory storage; 4FM modulator-level signal control switch machine; 5 LED digital tube display input, respectively, the output frequency; 6 a microphone input, two line inputs, can switch back and forth; 7 Frequency Agile output, automatic lock, the output frequency stability; 8 External FM output frequency adjustment; 9 FM output level high; 10 visual display of modulation frequency offset; 11 high-fidelity signal source monitoring; Indicators: (performance and targets are subject to change without notice) 1 FM reception range: 87 108MHz (0.1MHz step, continuously adjustable); 2 FM input level: 45 55dBμV (user modifiable); 3 Output frequency: 87 108MHz Frequency Agile Output (0.05MHz step, continuously adjustable); 4Carrier Modulation deviation: ± 1KHz; 5 FM output level: ≥ 110dBμV (-20dBμV adjustable); 6 harmonic suppression: ≥ 60dB; 7 parasitic amplitude modulation noise: <-50dB (no modulation); 8 SNR: ≥ 60Db; 9 Pre-emphasis time constant: 50us;