December 2017 Blog Posts (4)

Transmit QRQ CW on your RIG in AFCW MODE - some advantages and tips on getting it to work well for qrq sending

click on the YOUTUBE icon at the bottom of any video in this 6 part series that you are interested in to see its discussion notes and links

One of the advantages of sending CW this way, is that you can send a very customized and optimized cw waveshape that has extremely low distortion and harmonic energy... extremely low key…


Added by Chuck aa0hw on December 11, 2017 at 4:10pm — No Comments

Monitoring your SIDETONE from your MIC or LINE INPUT in Near Zero Low Latency delay using JACKROUTER

test results are shown(no sound on video) for hitting a lever that sends a TONE into the mic input jack of a laptop...a separate USB RECORDING MIC is placed at an equal distance from from both the LEVER and the SPEAKER (ABOUT 6 inches to mic from both the lever and the speaker) the MIC measures the TAP sound when hitting the LEVER and the final…


Added by Chuck aa0hw on December 4, 2017 at 12:00pm — No Comments

CW AUDIO FILTER wars - The EngineersFilter - VS - MOD, CALF, & GLAME audio bandpass filters

Robin Schmidt's EngineersFilter is a remarkable software APP audio bandpass filter VST PLUGIN...this video demo shows a test to compare how well just ONE FILTER APP can take out all the harmonics of a harsh square wave CW SIDETONE...AND...output a MORSE CODE AUDIO NOTE waveform that looks the closest to a raised cosine edged CW…


Added by Chuck aa0hw on December 4, 2017 at 9:03am — 1 Comment

Build a Morse Code CW SINE WAVE OSCILLATOR that sounds as good as FLdigi using FREE software

This is a QRQ CW COPY TEST - to see how close I could match the great sound of FLdigi's QRQ CW with a custom cw sine wave oscillator - built up by using AMsynth and the GLAME BANDPASS FILTER...NOTE: since you can not externally KEY FLdigi... i had to search for another way to be able to key CW manually/externally - from PADDLES, KEYBOARD or…


Added by Chuck aa0hw on December 2, 2017 at 4:44pm — No Comments

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