:
1. RTL-SDR V3, MSi.SDR, - ( FT8 )
2. FT8, : https://www.qrp-labs.com/qdx.html
The "QDX" (QRP Labs Digital Xcvr): a feature-packed, high performance, four-band (80, 40, 30, 20m) 5W Digi-modes transceiver kit, including embedded SDR receiver, 24-bit 48 ksps USB sound card, CAT control, synthesized VFO with TCXO reference. QDX transmits a SINGLE SIGNAL, it is not an SSB modulator with associated unwanted sideband and residual carrier, or intermodulation due to amplifier non-linearity. QDX outputs a pure single signal.
3. :
- - ( FT8 ),
- f1 ( QDX)
- f0 - ( 14,074 )
- ( )
- f0+f1
4.
- ( usb, ) ( - usb)
- (~300 )
- - ,
- ( 14,074 )
- - ,
- - ,
- - : , usb)
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