RTL_TCP (or RSP_TCP)

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Luis Acosta

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Apr 3, 2026, 8:16:26 PM (11 days ago) Apr 3

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I am attempting to connect SparkSDR (v2.0.992) on Ubuntu 24.04 to a remote SDRPlay RSP1A. The radio is connected to a Windows 11 PC running an rsp_tcp server.

I have verified that the network connection and server are functional: both SDR++ and Gqrx on my Linux laptop work perfectly using the rtl_tcp=[IP_ADDRESS]:[PORT] string. Additionally, running SoapySDRUtil --probe successfully identifies the device on the network.

However, within SparkSDR, I am unable to find an option to manually add this device. I have enabled "Use SoapySDR Driver" and "Use RTL Driver" in the advanced settings and added the server's IP to the "HPSDR Direct IP search" range, but no radio tile appears after refreshing.
Is there a specific method to force SparkSDR to recognize a remote rtl_tcp or Soapy source when it is not being auto-discovered in the UI?

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