Weak Signal High Speed Morse Code Meteor Scatter

2 Meters
 
144.100 - 144.200

 6 Meters
 
50.270 - 50.300


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IF you could send morse code at super sonic speed and use the power of your DSP sound card.....  
It IS possible to conduct a short QSO bouncing off a single meteor flashing across the sky.

The concept of sending and receiving high speed Morse code is not new.  Using a tape recorder it is possible to record you CW message then play the recording into your transmitter at high speed.  At the receiving end, the message is recorded on a high speed tape recorder and then slowed down to normal speed so the Morse code signal can be decoded.  Works great with the significant time available to bounce signals off the ionized effect of a meteor shower

Using the advantages of your DSP soundcard in your computer, WSJT encodes your  message using frequency shift keying (FSK) to increase the efficiency of your message for transmission at the rate of only a fraction of a second.  Quick enough to be achieved in both directions with the aid of a single meteor trail.... if you can catch one.  Recent upgrades have added 2 more FSK sub-modes featuring
Forward Error Correction (FEC) 
WOW!

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WSJT FSK411 technology - Weak Signal Meteor Scatter software 

Introduction to FSK411

Download WSJT

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JT6M, JT65, JT65A, JT65B, JT65C encodes your transmission with each letter resent at different tones to enhance it's identification at the receiving end 26 db below the noise level.  Special features
include:
tTime and frequency lock using sync tone and pseudo-random sequence.  Automatic frequency control follows frequency drifts up to 10 Hz/min.  Noncoherent detection using 64-bin spectra.  Ratio threshold test marks symbol erasures.  Reed-Solomon decoding with Berlekamp-Massey errors-and- erasures algorithm.  AFC is aided by advance knowledge of "expected message"  WOW!

WSJT JT65 technology - Beyound Line of Site and EME @ -26 db using 

Introduction to JT95

Download WSJT Software

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