Morse Code Reader
N. S. Bakde1, A. P. Thakare2
1Nilima S. Bakde, Department of Electronics & Telecommunication, Sipna College of Engineering & Technology, Amravati (Maharashtra), India.
2A. P. Thakare, Department of Electronics & Telecommunication, Sipna College of Engineering & Technology, Amravati (Maharashtra), India.
Manuscript received on 18 October 2012 | Revised Manuscript received on 25 October 2012 | Manuscript published on 30 October 2012 | PP: 53-56 | Volume-1 Issue-4, October 2012 | Retrieval Number: D0331091412/2012©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Whilst a cursory scan through the wavebands on a modern “normal” domestic radio receiver may reveal little in the way of Morse code transmission, this communications technique is still very much in use. Tuning in via a “communications receiver” or an older domestic receiver on the short wave (SW) bands will reveal Morse activity. At that time PICs were probably not even a twinkle in the eye of any semiconductor manufacturer. They were certainly not reality. Consequently, the EE design was based on a hardware mark-space ratio detector which fed separate Morse dots, to a pre-PC computer (Commodore PET 32K). This compiled the incoming logic into a binary format, matched it against a lookup table and displayed the results on screen. The design presented here is physically simpler, although the software is considerably more complex. The aspects of this design are different. A handheld unit that can receive Morse code, via audio input (internal microphone) or direct signal connection, and translate it for display on an in-built liquid crystal (LCD) alphanumeric screen. It consists of a PIC microcontroller which provides the interface between the Morse code input and the display unit
Keywords: Major Components And Requirements, Translation Requirements, Binary Format, International Morse Code, Reception Rate, Circuit Diagram, PIC Processing, Message Display
Scope of the Article: Image Processing