QRQ CW on MUMBLE by keying a TWIN-T oscillator through a custom W3NQN Gaussian audio bandpass filter

[Chuck Vaughn]

here is another test run using the W3NQN GAUSSIAN filter to clean up a homebrew TWIN-T code practice oscillator that is being keyed by the FLdigi's serial port RTS pin feature, and sent to the input of mumble

https://youtu.be/gg-jUV9IpEo

testing a CUSTOM BUILD W3NQN GAUSSIAN CW AUDIO BANDPASS FILTER to see how well it cleans up the harmonics and edge noise generated by keying a homebrew TWIN-T CODE PRACTICE OSCILLATOR for more info on this special custom build for filtering QRQ CW, from W3NQN, please see previous videos and their notes in their video descriptions: https://youtu.be/lrJF2Av4k90 https://youtu.be/QJEK184CZPA