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[top]About John Ehlers
John is the author of the MESA program; SIERRA HOTEL, and MESA BONDS adaptive trading systems, and co-author of the R-MESA #1 S&P daytrader. He is an Electrical Engineer. He received his BSEE and MSEE from the University of Missouri and did his doctoral work at The George Washington University, specializing in Fields & Waves and Information Theory. He has retired as a Senior Engineering Fellow with one of the largest Aerospace Companies. He has been a private trader since 1976, starting with fundamental analysis. With his engineering training he quickly gravitated to technical analysis of the market. He originally questioned what was magic about a 14 day RSI, or any other period. He concluded there was no unique answer and that one should adapt to current market conditions by using the measured cycle.
He discovered Maximum Entropy Spectrum Analysis while attending an Information Theory seminar in 1978. He quickly reduced the theory to a computer program useful for trading. It was written originally for S-100 computers and he sold the source code to a few brave traders who pioneered the use of PCs for technical trading. He converted the program for the APPLE computer to take advantage of its graphics capability and data availability via modems. The current MESA still uses the original Maximum Entropy calculation engine with enhancements for preprocessing and derived adaptive indicators. Many features, such as advanced DSP algorithms for indicators and advanced graphics have been added to improve program usability.
John has written extensively about technical trading and has spoken internationally on the subject. His approach is unique. Any technique must first work on theoretical waveforms before testing against real-world data is attempted. He has adapted the Hilbert Transform for traders so that advanced digital signal processing techniques can be used to create new indicators.
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