May 2022 Blog Posts (6)

get rid of HIGH "Q" CW Narrow Band Filter Ringing with a GATE DSP plugin & filter: live demo @ 80wpm

GATE plugin used in this demo if from CALF STUDIO PLUGINS

Added by Chuck aa0hw on May 31, 2022 at 9:41am — No Comments

Key your RIG using FLdigi's new SERIAL PORT DTR/RTS CW RIG keying feature

The accuracy of having FLdigi key the RIG using its new serial port DTR/RTS keying circuit ...looks impression on first testing...

TESTING  at          120 wpm,  150 wpm and…


Added by Chuck aa0hw on May 28, 2022 at 12:46pm — 1 Comment

Raspberry PI 4 - CW Morse Code Audio Tone Regenerator - using PI-APP's Reaper DAW's own plugins

pi-apps has a REAPER download REAPER contains all of the plugins to REGENERATE CW

throw any kind of sidetone into the REAPER INPUT and REAPER OUTPUTs a pure SINE WAVE, raised cosine edged CW AUDIO TONE, that perfectly clones the exact length of…


Added by Chuck aa0hw on May 27, 2022 at 7:44am — No Comments

SonoBus i/q Stereo - VLF CW/IP - Morse Code server - on a Raspberry PI 4 - uses LYSDR to demodulate

TEST SETUP to use SonoBus in a LOOPBACK SERVER MODE (you have to mute all contacts but the PI 4 server)

TO SEND VLF RF CW directly, and send in i/q stereo you need a CW KEYER like Recri Keyer…


Added by Chuck aa0hw on May 26, 2022 at 8:59am — No Comments

copying QRQ CW in a TUNED RESONANT HIGH "Q" system - DEMO a GATE between 2 CW audio bandpass filters

QRQ CW TRANSMITTER & RECEIVER are both using HIGH Q resonant systems on their Ferrite Loopstick ANTENNAs

PROBLEM - HIGH Q will cause ringing and MUSH on the RECEIVE signal

SOLUTION - use a GATE between 2 CW AUDIO BANDPASS filters

Added by Chuck aa0hw on May 16, 2022 at 10:10am — No Comments

Raspberry PI 4 complete CW KEYER(iambics, st key & keyboard) using free software from LSP & Recri

CW KEYER SETUP overview: 4 different 555 timer chip oscillators that have been set to…


Added by Chuck aa0hw on May 10, 2022 at 10:47am — No Comments

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