The Microcode kit assembles into a versatile Morse Code reader capable of decoding and displaying audio Morse code signals from speeds of 10 words per minute (wpm) to over 40wpm. A sensitive integral microphone combined with a tunable bandpass active filter allow the Microcode to operate effectively by being placed near to a receiver’s loudspeaker. Alternatively, a line input allows direct connection to the audio output from a receiver. Direct connection of a Morse key is also supported.
Menu System
All user functions are easily and quickly changed during normal operation using the three front panel push buttons and the Microcode’s intuitive menu system. Microphone or line input gain can be changed on the fly to suit the operating environment using just two of the front panel buttons.
Display Options
Two display formats allow for both single or dual line display of decoded text on the 16×2 character back lit LCD. In single line mode, the decoded text is displayed on the top line and the average speed in wpm on the bottom line. Two display modes offer fixed or scrolling text. The display backlight has five brightness settings and can be switched off completely to save current when using a battery supply.
Character Set
Where possible we have also included the International Morse Code non-English extensions to the Microcode’s character set. These cover most of the European alphabets with lower case characters being used to indicate the use of an extended code.
Whilst no automated system can beat the ability of a skilled operator, the Microcode DSP performs remarkably well and will prove a useful tool for both novice or expert.
Kit
The Microcode DSP is supplied as a kit and comprises of two PCBs populated with standard through hole parts. The kit is easily assembled by anyone experienced in soldering and having the ability to follow written instructions.
Features:
Display:
- 16×2 LCD with white backlight
- Two display modes; dual line text or single line text with speed in words per minute (wpm)
- Five backlight brightness settings
Operating Features:
- Decode speeds from 5 to over 50wpm
- Internal Microphone and Line inputs
- FIR input filters and optimised DFT detection system arranged in three 200Hz overlapping bands from 500Hz to 900Hz
- High audio sensitivity with independent Microphone and Line input gain adjustment from 0 to -32dB in 2dB steps
- LED signal detection indicator
- All functions changeable on the fly using front panel push buttons and on screen menu system
- Changes to settings memorised and used at next switch on
Physical:
- Size W102mm, H 49mm, D45mm (depth from rear connectors to push button faces)
- LCD and switch panel mount onto rear of main PCB
- Nominal +12v operation (9v battery operation possible)
- High quality components and a professional silk screened PCB
- Comprehensive 16 page instruction manual