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SDRSharp Net Remote

Copyright 2014 - 2015 Al Brown

al [at]

A network and serial remote control plugin for SDRSharp.

More details can be found here.

Tested on:

  • Windows XP
  • Windows 7
  • Windows 8.1


Run the installer and point it to an installation of SDRSharp, this will copy the necessary files and register the plugin.


Start SDRSharp and check the plugin control panel is shown on the left side of the main window and ‘Network’ is ticked.


telnet localhost 3382

You should get a JSON response showing the plugin name and version, for example:

{"Name":"Net Remote","Version":"1.0.5282.28765"}

If ‘Serial’ is enabled in the control panel commands will be read from the serial port, currently the port defaults to 115200 8N1.


Commands are JSON formatted strings containing a Command, Method and optional Value attributes. For example to set the current volume to 30:

{"Command": "Set", "Method": "AudioGain", "Value": 30}

Or to test if SDRSharp is currently playing:

{"Command": "Get", "Method": "IsPlaying"}

Which returns:


All attributes are case insensitive.

Command Attribute

The command attribute may be one of the following:


The value attribute only used with the Set command.

Method Attribute

For the Get and Set commands the method can be one of the following:

AudioGain           - Volume <25-60>  
AudioIsMuted        - Mute <true|false>

CenterFrequency     - Centre displayed frequency <0-999999999999>
Frequency           - Tuned frequency <0-999999999999>

DetectorType        - Demodulation <AM|CW|DSB|LSB|NFM|RAW|USB|WFM>

IsPlaying           - Currently playing <true|false>

SourceIsTunable     - Tunable device <true|false>

SquelchEnabled      - Squelch <true|false>
SquelchThreshold    - Squelch level <0-100>

FmStereo            - FM stereo <true|false>

FilterType          - Filter type <1-6>
FilterBandwidth     - Filter bandwidth <10-250000>
FilterOrder         - Filter order <10-9999>

For the Exe command these methods are available:

Start               - Start playing
Stop                - Stop playing
Close               - Close network connection


The response of a command my be either be OK or Error.

OK is returned if a Set command completes:


For Get commands method and value attributes are added, e.g.:


An Error is returned if a problem occurred, e.g.:

{"Result":"Error","Type":"Value error","Message":"Value missing"}

Physical Controls

You can use this to interface real-world controls such as buttons and rotary encoders to SDR#, a basic tutorial is available.


This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see