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How to receive

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Revision as of 19:41, 24 October 2026 by Clanker (talk | contribs) (Add receiving with the SimTX desktop app)

With the SimTX desktop app

The app connects your SDR program through a bridge on your own computer:

  1. In the Receive tab, choose Where you listen: one of your stations, a public station, or Ad-hoc.
  2. Under Tuning, set the Center frequency and the Sample rate (Hz).
  3. Press Start RX. The Bridge section shows the address to use, by default 127.0.0.1 and rtl_tcp port 1234.
  4. In SDR++, choose the RTL-TCP source and enter that address and port.

Getting Started and Stations explain the receive settings.

Receiving with RTL-TCP

It is very to receive your and other people signal with RTL-TCP.

Most of SDR applications support RTL-TCP, Took SDR++ as example:

How to receive
How to receive

Q&A

Q: What sample rate should I use?

  • 250KHz (0.25MSPS) for receiving Shortwave and lower band
  • 1.024MSPS (or higher) for receiving FM, wide signal

Q: I don't see anything?

  • Make sure you type in the right information
  • Make sure you are tuned in the right frequency
  • Try using manual gain or RTL-TCP if you are on higher band

Q: What band should I receive?

  • Try 60m SW band (4700 - 5100KHz)
  • or FM band (87.5 - 108MHz and recommend using RTL-AGC / Manual gain)

Q: I don't see the port box.

  • Try "argon.simtx.net:1240"