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SDRplay SDRplay RSPdx-R2
SDRplay-SDRplay RSPdx-R2-Image-1 SDRplay-SDRplay RSPdx-R2-Image-2

SDRplay SDRplay RSPdx-R2

Wideband Full-Featured 14-bit SDR Covering 1kHz to 2GHz

HRO Discount Price: $239.95*


*After Coupons & Promotions.

Current Stock Status At These Ham Radio Outlet Locations
SDRplay RSPdx-R2 Description     Hide

The SDRplay RSPdx-R2 is an enhanced version of the popular RSPdx and is a wideband full-featured 14-bit SDR which covers the entire RF spectrum from 1kHz to 2GHz. Combined with the power of readily available SDR receiver software (including ‘SDRuno’ for Windows and Multi-Platform ‘SDRconnect’ supplied by SDRplay) you can monitor up to 10MHz spectrum at a time.

The RSPdx provides three software selectable antenna inputs, and an external clock input. All it needs is a computer and an antenna to provide excellent communications receiver functionality. A documented API allows developers to create new demodulators or applications around the platform.

Key Benefits & Features:

  • Covers all frequencies from 1kHz through VLF, LF, MW, HF, VHF, UHF and L-band to 2GHz, with no gaps
  • Receive, monitor and record up to 10MHz of spectrum at a time
  • Significantly improved noise performance below 1MHz (i.e. for some MF, LF and below)
  • Improved dynamic range below 2MHz both in tuner mode and HDR mode
  • HDR mode below 2MHz giving overall dynamic range and selectivity advantages
  • Software selectable choice of 3 antenna ports
  • External clock input for synchronisation purposes, or connection to GPS reference clock for extra frequency accuracy
  • Excellent dynamic range for challenging reception conditions
  • Free use of Windows-based SDRuno software (check website for versions supported)
  • Free use of SDRconnect SDR and server software for Windows, MacOS and Linux (Check website for versions supported)
  • Multiplatform driver and API support including Windows, Linux, Mac, and Raspberry Pi 4/5
  • Strong and growing software support network
  • Calibrated S meter/ RF power and SNR measurement with SDRuno (including datalogging to .CSV file capability)
  • Documented API provided to allow demodulator or application development on multiple platforms



  • Weight 315g
  • Size: 113mm x 94mm x 35mm
  • Low current consumption:
  • 190mA @ >60MHz (excl Bias T)
  • 120mA @ <60MHz (excl Bias T)


  • USB 2.0 (high speed) type B socket

Frequency Range:

  • Continuous coverage 1kHz – 2GHz

Antenna A Port Characteristics:

  • 1kHz – 2GHz operation
  • 50Ω input impedance
  • SMA female connector

Antenna B Port Characteristics:

  • 1kHz – 2GHz operation
  • 50Ω input impedance
  • SMA female connector
  • Selectable 4.7V DC out (see Bias T)

Antenna C Port Characteristics:

  • 1kHz – 200MHz operation
  • 50Ω input impedance
  • BNC female connector

Antenna Port Isolation:

  • Unselected port isolation 40dB min

Reference Clock Input:

  • MCX female connector

Bias T (Antenna B Port only):

  • Software selectable 4.7V @ 100mA

IF Modes:

  • Zero IF, All IF bandwidths
  • Low IF, IF bandwidths ≤ 1.536MHz

IF Bandwidths (3dB):

  • 200kHz
  • 300kHz
  • 600kHz
  • 1.536MHz
  • 5.0MHz
  • 6.0MHz
  • 7.0MHz
  • 8.0MHz

ADC Characteristics:

  • Sample frequency 2 – 10.66MSPS
  • 14-bit native ADC (2 – 6.048MSPS)
  • 12-bit (6.048- 8.064 MSPS)
  • 10-bit (8.064- 9.216MSPS)
  • 8-bit (> 9.216 MSPS )

Maximum Recommended Input Power:

  • 0dBm continuous
  • 10dBm for short periods


  • High temp stability 0.5PPM TCXO
  • In-field trimmable to 0.01 ppm

External Reference Clock:

  • Plug in the external clock before power-up. Auto-detect will switch to the external reference
  • Frequency 24MHz sine/square wave
  • 1V Pk-Pk Min
  • 3.3V Pk-Pk Max

Typical Noise Figures:

  • 19dB @ 300kHz
  • 18dB @ 2MHz
  • 17dB @ 12MHz
  • 15dB @ 25MHz
  • 15dB @ 40MHz
  • 2.6dB @ 100MHz
  • 2.1dB @ 200MHz
  • 6.0dB @ 340MHz
  • 3.1dB @ 660MHz
  • 4.4dB @ 1500MHz
  • 5.0dB @ 1800MHz

Notch Filters:

FM Notch Filter:

  • >30dB 77 – 115MHz
  • >50dB 85 – 107MHz
  • >4dB 144 – 148MHz

MW Notch Filter:

  • >15dB 400 – 1650kHz
  • >30dB 500 – 1530kHz
  • >40dB 540 – 1490kHz

DAB Notch Filter:

  • >20dB 155 – 235MHz
  • >30dB 160 – 230MHz

Front End Filtering:

Low Pass:

  • 500kHz
  • 2MHz

Band Pass:

  • 2-12MHz
  • 12-30MHz
  • 30-60MHz
  • 60-120MHz
  • 120-250MHz
  • 250-300MHz
  • 300-380MHz
  • 380-420MHz
  • 420-1000MHz

High Pass:

  • 1000MHz

Note: The notch filters above are software selectable and remove specific broadcast bands.

    Manufacturer's Website