150kW SW PSM Radio transmitters (TBH 522)

• Features                                               

               * Pulse Step Modulation, solid state modulator

               * High reliability design

               * High overall efficiency

               * Wide-band transistorized RF driver stage

               * Cavity tank circuit (patented) for RF final stage

               * Automatic tuning

• Specifications                                             

Output Power........................................Carrier power  ≥150kW

Frequency Range..................................3.9~26.1MHz

Type of Modulation.................................PSM (pulse step modulation)

Type of Operation...................................A3E, with the dynamic carrier control

Output Impedance...................................50Ω unbalanced

Frequency Stability..................................1×10^-8/d

Overall Efficiency......................................≥70% (3.9~22MHz)

....................................................................≥65% (22~26.1MHz)

S/N..............................................................Better than 56dB (limiting amplifier is excluded)

Audio Frequency Response....................±1dB at 50~5000Hz, typically at 1000Hz, m=0.5

Audio Non-linearity Distortion...................3% at 90% mod (including limiting amplifier)

Audio Input Level........................................0dBm

Audio Input Impedance..............................600Ω balanced

Modulation ability.......................................(a) Maximum modulation is 100% at 40~5000Hz; 

.....................................................................(b) Un-symmetry between up and down modulation is less than 3%;

......................................................................(c) Continuous operation at 75% average modulation;

Tuning Mode................................................Automatic tuning

frequency-changed time.............................. ≤1min.

Spurious Output...........................................(a) Spurious output power is less than or equal -65dB;

.......................................................................(b) Spurious caused by PSM switch frequency less than or equal -70dB.

Cooling Mode...............................................Super vaporization cooling

PC Interface...................................................Concrete parameter consulting with customer

Power Supply................................................380V+10%,-5%, 3 phase 4 wire, 50±1Hz

Power Factor.................................................Better than 0.9 (Not including the condition of floating carrier operation)

Environment Condition.................................(a) Ambient Temperature: 0~+40℃;

.........................................................................(b) Humidity Range: 0 to 95%, non-condensing;

.........................................................................(c) Altitude: Up to 2000meters.