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This plugin allows you to listen to Stereo in OIRT FM Band (sometimes called Polar Stereo), it also allows you to listen to normal CCIR FM Stereo (but only, because it was easier to debug it, since there are more radio samples to test)

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veso266/SDRSharp.StereoDecoder

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SDRSharp.StereoDecoder

This plugin allows you to listen to Stereo in OIRT FM Band (sometimes called Polar Stereo)

Ever since I started to DX, I heard stories about a special stereo system that countries in USSR are using that our normal radios are unable to decode, that So you needed a special receiver that was usualy only uvailable on USSR to decode this system List of radios I know of

Romantika-104-stereo Laspi-001-stereo Takt-001-stereo Rondo 102 Stereo Korvet 104 stereo

The system is called Polar Stereo (at least I call it that way, since its using a process called Polar Modulation to encode Stereo Difference

in 02.07.2017 I even got Avtoradio on 68.00Mhz, but as I sadly only had my Sangean ATS909X as a reciever (which only supports CCIR FM Stereo) back then I could never properly record that
sadly Avtoradio does not broadcast in Polar stereo anymore as their transmitter was dismantled in 2021

If you want to see what stations broadcast in Polar stereo, visit this page

For me one day I hope I will be able to receive a real station broadcasting in Polar Stereo To remind myself what I could expect, I will write stations I could receive at my location here

RUS	72.920 Mhz	Radio Radonezh
RUS	66.980 Mhz	Radio Mayak
RUS	67.130 Mhz	Radio Rossii 	
UKR	70.970 MHz	UR 2 Radio Promin

How to install

Download dll from release page

For latest SDR#

You just copy dll into Plugins directory and enjoy

For SDR# 1785 and below

You copy the plugin DLL into sdrsharp program directory and then edit plugins.xml and add the following line to it (people used to call this MagicLine.txt)

<add key="StereoDecoder" value="SDRSharp.StereoDecoder.StereoDecoderPlugin,SDRSharp.StereoDecoder" />

Exmplanation of MagicLine(if you want to write your own plugin someday)

<add key="Whatever-you-want-that-is-unique" value="NameSpace.EntryPoint,DLLName" />

Polar Stereo CCIR Stereo

Demonstration

About

This plugin allows you to listen to Stereo in OIRT FM Band (sometimes called Polar Stereo), it also allows you to listen to normal CCIR FM Stereo (but only, because it was easier to debug it, since there are more radio samples to test)

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