How do I decode MFSK?

How to decode WBCQ’s digital message

1. Download the mp3 recording by clicking here (right-click, then save file).
2. Download and install FLDIGI.
3. Launch FLDIGI and tell it that you wish to decode the digital format MFSK-64.
4. Play the audio so FLDIGI can decode the message.

What is difference between FSK and MFSK?

Multiple frequency-shift keying (MFSK) is a variation of frequency-shift keying (FSK) that uses more than two frequencies. MFSK is a form of M-ary orthogonal modulation, where each symbol consists of one element from an alphabet of orthogonal waveforms.

How does MFSK work?

How MFSK Works. MFSK is a system where individual pulses of different radio frequencies carry information, and the data carried depends on the frequency of the pulse. This is the same as FSK, for example radio teletype (RTTY), but rather than two different frequencies, many more are used – from six to 64, for example.

What is Olivia mode?

Olivia modes are commonly referred to as Olivia X / Y (or, alternatively, Olivia Y / X ), where X refers to the number of different audio tones transmitted and Y refers to the bandwidth in hertz over which these signals are spread. Examples of common Olivia modes are 16/500, 32/1000 and 8/250.

What is FSK decoder?

The WiNRADiO Universal FSK Decoder is an extremely versatile signal decoding utility for WiNRADiO receivers (the list of supported receivers is given in the “System Requirements” section below).

How do I find my FSK signal?

Decoding FSK, Step by Step

1. Digitize the received baseband signal.
2. Identify the beginning of the bit period.
3. Multiply each symbol by a sine wave with the binary 0 frequency and by a sine wave with the binary 1 frequency.
4. Calculate the DC offset of each symbol.

Which is better PSK or FSK?

PSK modulation techniques are in general better than FSK modulations in terms of bandwidth requirements or in other words PSK modulation schemes offer better bits/s/hz efficiency. However FSK modulation schemes are more power efficient i,e, offers better BER performance at a given S/N (signal-to-noise ratio).

What is M-ary modulation?

An M-ary transmission is a type of digital modulation where instead of transmitting one bit at a time, two or more bits are transmitted simultaneously. This type of transmission results in reduced channel bandwidth. However, sometimes, two or more quadrature carriers are used for modulation.

What Frequency is Olivia?

How do I decode my FSK signal?

What is FSK used for?

Frequency-shift keying (FSK) is commonly used over telephone lines for caller ID (displaying callers’ numbers) and remote metering applications.