Equipped with productive transmitter-receiver headset factory and company, Fenghuo Hongsheng is one of the leading China flight headset, aircraft headset manufacturers and suppliers. Welcome to contact us.Model OSD-11C Transmitter-receiver Headset adopts the structure of monaural head ring, it has the functions of transmitting and receiving.The wearing angle of the connecting pole, the head ring and the receiver can be adjusted. It has the features of comfort wearing, convenient operation, stable performance. It can be equipped with various intercom systems, radio sets and other communication equipments. Main Technical Specifications: Operating temperature: -20℃～+55℃ Reference dimensions: 210mm×160mm×80mm Weight≤300g Frequency range: 200Hz～4000Hz ransmitting sensitivity≥-28dB/Pa(1000Hz)(0dB,reference value:1V)Transmitting operating voltage: 12V DC Receiving impedance: 150(1±15%)Ω(1000Hz)Receiving sensitivity≥110dB/mW(1000Hz)Model OSD-11/12 Transmitter-receiver HeadsetModel OSD-11/12 Transmitter-receiver Headset is the voice communication terminal for the aircrew.it adopts the structure of binaural head ring; the product has obtained CTSOA (Serial Number: TSOA0034-XB-001) which is awarded by Civil Aviation Administration of China. It can replace the foreign products. It has the characteristics of comfortable for wearing, portability, clear voice, the stable performance and the high reliability. Main Technical Specifications:    Operating temperature: -20℃～+55℃     Weight≤140g     Transmitting mode: anti-noise electret(with the amplification)     Transmitting frequency range: 350Hz～6000Hz Transmitting sensitivity:(20～80)mV/Pa(20uPa,1000Hz,8V DC) Operating voltage:(8～16)V DCTransmitting Total harmonic distortion≤5%(114dB, 350Hz～6000Hz, 8V DC)    Receiving mode: moving-coil type     Receiving frequency range: 350Hz～3000Hz     Receiving impedance: 150(1±15％)Ω(1000Hz) (OSD-11);                                 600(1±15％)Ω(1000Hz) (OSD-12) Receiving sensitivity:(90±5)dB/mW(1000Hz)     Receiving total harmonic distortion≤10%(Receiving:110dB, 350Hz～3000Hz) Model OSD-11B Transmitter-receiver HeadsetModel OSD-11B Transmitter-receiver Headset adopts the structure of binaural head ring, it has the functions of transmitting and receiving.The wearing angle of the connecting pole, the head ring and the receiver can be adjusted. It has the features of comfort wearing, convenient operation, stable performance. It can be equipped with various intercom systems, radio sets and other communication equipments. Main Technical Specifications:   Operating temperature:-20℃～+55℃      Reference dimension: 210mm×160mm×80mm      Weight≤ 300g      Frequency range:200Hz～4000Hz      Transmitting sensitivity:≥-12dB/Pa(1000Hz)(0dB reference value:1V)      Transmitting operating voltage:(8～16)V DC      Receiving impedance: 150(1±15%)Ω(1000Hz)Receiving sensitivity≥108dB/mW(1000Hz)