rsp3_tcp's Introduction

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.

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rsp3_tcp's Issues

(Request) Linux Binary

I hadn’t got around to an attempt at building this for Linux, but thought I’d check back to see if that was still something you were considering.

I’ve tried the normal rsp_tcp now with Linux and it seems limited in what it can do without using the extio - like I just want to adjust gain and that doesn’t seem to be an option.

(Question) Bias T support

Would this version of rsp_tcp happen to support turning on/off the internal bias t on the rsp1a? It seems like this version has had more recent development then the original rsp_tcp.

Edit: Have you built Linux binaries?

please have look at lines 935 and 936 in file sdrplay_device.cpp:
The command line output
"sdrplay_api_AgcControl 50Hz, -60 dBfs returned with: 0"
should be
"sdrplay_api_AgcControl 5Hz, -15 dBfs returned with: 0"
because of
pCurCh->ctrlParams.agc.enable = sdrplay_api_AGC_5HZ;
and
agcPoint_dBfs should be replaced with agcPoint_dBfs_DAB in line 936 because of line 934.

Best regards,
cgfan

Edit: agcPoint_dBfs replacement added.