RSP3_tcp

TCP/IP Server for I/Q data delivered by sdrplay RSP devices, using their driver V3 : RSP1A, RSP1B, RSP2, RSPduo (currently single tuner), RSPdx, RSPdxR2.

• Runs on Windows and Linux,
• Delivers 8- and 16- Bit I/Q Data,
• Working with sdrplay driver 3.15 (Linux still 3.07).
• Developed as a server for QIRX V3 and V4, and with reduced functionality for other apps like SDR# (Source RTL-SDR TCP) or DAB Player (commandline -RtlTcp)

History

V0.3.13, June 2024

• Hardware RSP1B and RSPdxR2 tested (on Windows 10)
• Credits: Thanks to Bernhard (DB9PP) and Alex aka DABär (in rundfunkforum.de), for their tests on the hardware.

V0.3.11, May 2024

• Working with sdrplay driver 3.15.
• Device ranges adapted according to the new RSP1B, RSPdxR2
• Tested on Windows 11

V0.3.10, March 2024

• RSP band notch filters for DAB, WFM (DabNotch, RfNotch) reported back to the host.
• Selected antenna for RSP2, RSPdx reported back to the host.

V0.3.9, June 2023

• RSP band notch filters for DAB, WFM, AM included.

V0.3.8, June 2023

• New commandline parameter -T x to select the antenna input on RSPdx, RSP2.
• Automatic enabling of the AGC

V0.3.7

• Basic version for cooperation with other apps than QIRX, like SDR# or DAB Player
• Uses the new commandline parameter -B 1 (basic version) or (default) -B 0 (standard version, to be used with QIRX)

V0.3.6

• Version for Linux
• Builds for Linux and Windows from the same sources
• For QIRX 4.0.8 and higher, the DAB frequency accuracy is maintained with an accuracy of 1/1000 ppm (i.e. ppb), backwards compatible.
• Cooperates with QIRX > V3.2.1

V0.3.2

• Back channel protocol for clean synchronization with the host on startup and shutdown.
• Two-stage initialization process: 1st step: identify to the calling host, 2nd step: select the device with the requested Serial Number.
• During normal operation, more device states like Overload, LNA State or Gain are reported on the back channel.
• Cooperates with QIRX > V3.2.1

V0.3.1, Initial Release, Basic Features

• API compatible with RSP2_tcp
• Frequency Correction with 1/100ppm accuracy driven by the "Calibrate" function in QIRX (DAB demodulator),
• Back channel reports the current gain, to enable the host a calibrated frequency spectrum indication,

Credits:

• Thanks to old-dab (https://github.com/old-dab) for his extensive research on these devices.