Portable Magneto Telephone
Chinacoal07 1 Match light are multiplexed lines. 800Hz telephone impedance is 800Ω ± 20%.
2 Through two telephones on the same model, even in less than 75db audio noise conditions, the communication distance up to 21 km.
3 In temperature -40 °C (using cold battery) - +50 °C 750 ± 30mmHg pressure and temperature of +40 °C, relative humidity up to 98% of the reliable work environment.
4 All parts are fixed on the rack into one, along with mobile phones are loaded into the enclosure, solid structure to carry and easy to use.
5 volume:222X195X107(mm)3
6 weight:2.5Kg
HCX-3 portable magneto telephone application environment
1,1, phone nominal impedance of 800 ohms, lightweight design selected by double-track line is, if you use ultra-light is double-track, side tone bigger.
2,1, phone nominal impedance of 800 ohms, lightweight design selected by double-track line is, if you use ultra-light is double-track, side tone bigger.
3,the transmit reference attenuation: Use 3V battery voltage is +4.0 - +1.2 N. Receive reference attenuation is -0.8 ± 0.25N.
4,in the 75db noise environment, in order to communicate the same model phone when the call light is multiplexed online distance 24 km.
5,bells Sensitivity: 75db noise level in the environment and light is 30 km double-track conditions, using the same type of interaction shake telephone two generators, two meters can be heard ringing.
6, the machine box: thermoplastics repression, durable.
7,the use of the environment: Ambient temperature: -40 °C - +50 °C range. Relative humidity: up to temperature of +40 °C, relative humidity 95 +3% Atmospheric Pressure: 760 - 780 mm water column height yin range.
