Скачать или смотреть REGENERATIVE CW MODE: making perfect morse code audio tones with free software

This video shows a method to take cw morse code audio tones that are poor in quality, and regenerate them to make them virtually - "perfect" - cw audio tones - using free software. An audio derived cw keying circuit is used to key a separate, free, software code practice oscillator. An external circuit is used to rectify the original morse code audio tones and turn that audio voltage into a cw keying ON/OFF voltage, in order to key the serial port's DSR pin to ground - activating the software code practice oscillator in precisely measured timing to duplicate exactly as possible, the original cw as far as timing, speed, length of each cw element, etc, goes.

Here is a link to a blog article that has many types of audio derived
cw keying circuits pictured:
http://qrqcwnet.ning.com/forum/topics...

Here is a link to a picture of the STRAIGHT KEY setup for CWcom:
http://i.imgur.com/Voqo5.gif

Here is a picture of a BLOCK DIAGRAM of the audio flow
for this REGENERATIVE CW FILTER MODE SETUP:
http://screencloud.net/v/cQuM

Listen to this example of REGENERATING CW
at a QRQ speed of 70 wpm.
  / regenerative-cw-mode