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The FX-4C is a new SDR transceiver developed by BG2FX.  It covers all of the major HF bands, and includes wide-band receive capabilities.  Its small size (1 lb) and built-in speaker and microphone allow ultra-portable operation.  A simple built-in USB sound card interface enables simple operation on digital modes. 

• Transmission frequency range: 3.5 - 29 MHz frequency range of amateur radio
• Receiving frequency range: 465 kHz - 50 MHz
• Operating Modes: USB, LSB, CW, AM, FM
• Frequency Steps: 10 Hz, 100 Hz, 1 kHz, 5 kHz, 10 kHz, 100 kHz, 1 MHz
• Antenna impedance: 50 Ohm
• Operating temperature range: -20 - +40℃
• Voltage range: DC 9 V - 18 V (please keep the maximum voltage below +16 V for long-term operation: About 14 V is recommended)
• Power Consumption: 
• Transmit: (maximum power) ~ 2 A; 
• Receive: ~ 220 mA.
• Overall size: length 107 mm, width 65 mm,  height 43 mm
• Weight: (radio only) 0.46 kg
• Filter Bandwidth: 
• SSB: 1.5 kHz, 1.8 kHz, 2.1 kHz, 2.4 kHz, 2.7 kHz, 3 kHz
• CW: 50 Hz, 100 Hz, 200 Hz, 300 Hz, 500 Hz, 800Hz
• FM: 5 kHz, 10 kHz
• AM: 6 kHz, 9 kHz
• Power range: 0.1-10 W continuously adjustable
• Spurious emission suppression: -43 dB
• Carrier suppression: -50 dB
• Microphone impedance: 2.2 k Ohm
• Audio output power: 1 W
• Receiving sensitivity: -120 dBm

• 2.0″TFT display screen
• Spectrum display and 20 kHz waterfall plot
• Dual VFO operation (VFO A and B) with split mode operation
• Internal USB sound card with serial communication via USB 
• Adjustable DSP digital noise reduction
• Ultra wide input voltage: 9 V - 18 V
• Quick switching among various frequency bands and convenient operation

Additional information about FX-4C operation can be found in the English user manual