Marc Vaillant
  • Male
  • North Conway, NH
  • United States

Marc Vaillant's Discussions

What circuit for computer audio out to key rig?
30 Replies

Started this discussion. Last reply by Chuck aa0hw Apr 27.

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Latest Activity

Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is a LIVE DEMO of an Audio Derived CW Keying Switch Circuit KEYING a RIG's CW JACK SEUTP: in this demo, FLdigi is sending out a CW KEYING TONE at 1Khz using FLdigi's RT QSK feature/function the input of the SWITCH rectifies and…"
Apr 27
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is another example of an audio derived CW KEYING CIRCUIT, this time using a diode switch to key the RIG's CW JACK brief testing of FULL QSK keying of an ELECRAFT K3S at 65 wpm using FLdigi on a Raspberry pi 4, sending 2400hz CW AUDIO out…"
Feb 2
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is another example of keying an ELECRAFT K3S RIG - by an audio derived CW KEYING circuit - using a software CW KEYBOARD(YPLog in this example) and a Raspberry PI 4 headphone output jack the Raspberry PI tested to have enough volume output at…"
Feb 1
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
" Here is another interesting low cost circuit that might work well for an audio derived CW RIG Keying circuit: FROM:  https://web.eecs.umich.edu/~prabal/pubs/papers/kuo10hijack-islped.pdf"
Jun 15, 2021
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is a LIVE DEMO of using the full wave doubler circuit with a MOUSER 8 ohm to 200 ohm input transformer - this is a REMOTE CW setup, where a Low Power AM transmitter(1630 Khz) is modulated at the remote OP's desktop by the audio output of a…"
Feb 11, 2020
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is a video demo of testing these kind of circuits to key CW on a RIG to find the "best" audio pitch AUDIO DERIVED CW KEYING CIRCUIT - (what audio frequency to use) Finding the "best" audio pitch to generate the most…"
Feb 10, 2020

Profile Information

Your Call Sign
kb1ooo
How many years have you been performing QRQ CW
Been a Ham for just over a year. Still trying to get to QRQ.
Max speed is 30wpm head copy right now.
Your favorite key, paddle or bug
Black Widow paddle
Your Rig, Antenna and RF Power
Rig: Wilderness SST 30M
Ant: End fed half wave vertical.
Pow: 2 Watts.
Your QSK preferences
Full.

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