Universal FSK Decorder for WR-1000/1500/3000 and G3 Series Receivers (WR-FSK)

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Universal FSK Decoder for WR-1000/1500/3000 and G3 Series Receivers

The WiNRADiO Universal FSK Decoder is an extremely versatile signal decoding utility for WiNRADiO receivers 1000/1500 or 3000 series, as well as G3 series. Using WiNRADiO models with in-built DSP (for example WR-G313i) will provide the best decoding quality; however, the Decoder will also work well with a sound card.

The Decoder contains several powerful analysis tools, making it possible to determine transmission characteristics of an unknown signal automatically.

Looking at the decoder’s main control panel on the right, you will see a drop-down list at the top, labelled Protocol. Here you can select the type of coding protocol used. Using the Add or Edit buttons, new protocols can be added, either created entirely from scratch (the number of variable parameters makes the number of usable protocols almost unlimited), or by deriving new protocols from existing ones by modifying some of their parameters.

A “protocol” consists of all the various settings and parameters which are needed to be able to decode a signal, including the type of coding, mark/space frequencies, baud rate, character format, translation table, etc.

The first stage of the signal decoding chain is the level detector, visible at top-left of the main control panel above.

This detector allows the user to determine whether an adequate audio signal level exists at the decoder input. This facility is available only when a sound card is used; in such case the level should be adjusted either using the receiver or sound card volume settings. With WiNRADiO DSP receivers, the level control is automatic.