Description: Please note It has been upgraded to the latest version 2 22 Please do not upgrade without permission Updating without permission may cause the system to become bricked V2D is used for Searching and listening to radio sessions on amateur bands Listening to VHF FM radio stations Radio monitoring Radio transmitter tuning PC as SDR set top box with 12 MHz sample rate and 5 MHz bandwidth Educational process in universities Specification Firmware version V2 12 Frequency range 100 kHz 2800 MHz Bandwidth spectrum baseband 1 2 3 5 3MHz Bandwidth IF spectrum 25 50 100 250 450KHz Frequency resolution 1Hz ADC bit depth 16bit Sensitivity 0 25uV Control range of low noise amplifier 0 30dB Control range of attenuator 0 30dB Input impedance 50 Ohm switchable to HI Z Reference oscillator TCXO ±0 5 ppm Operating modes CW AM AMS LSB USB DSB NFM WFM STEREO Fixed filter bandwidths for WFM 100 200 300 400 kHz Adjustable filter bandwidths for WFM 50 kHz 450 kHz Fixed filter bandwidths for AM AMS NFM 4 6 8 10 20 kHz Adjustable filter bandwidths for AM AMS NFM 2 25 kHz Fixed filter bandwidths for LSB USB DSB 1 8 2 0 2 4 2 7 3 3 kHz Adjustable filter bandwidths for LSB USB DSB 1 5kHz Fixed filter bandwidths for CW 0 25 0 3 0 5 1 0 1 5 kHz Adjustable filter bandwidths for CW 0 1 2 kHz Additional functions AGC noise reduction squelch notch filter 5 band equalizer with presets Fixed st