Started Feb 14, 2015
Started this discussion. Last reply by Chuck aa0hw Oct 1, 2021.
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QRQ CW example, by, AUDIO OVER iP via a GSTREAMER raspberry pi TCP AUDIO SERVER and a GSTREAMER laptop TCP AUDIO CLIENT, organized by two PYTHON scripts.
- you can download the TCP SERVER and CLIENT python scripts here:
PYTHON/gstreamer TCP SERVER:…
ContinuePosted on November 22, 2023 at 3:28pm
see this ongoing PLAYLIST with many examples:
http://www.youtube.com/playlist?list=PLfFan4sDonOeK0ipjeVQOkYtV51ogBifV…
ContinuePosted on October 30, 2023 at 1:00pm
using the info at GOOGLE PATENTs, this "TUNED" twin coil ferrite rod loopstick VLF Receive Antenna was put together from some spare parts in the shack, for a test run at 32Khz for receiving a QRQ CW signal at 32Khz…
ContinuePosted on October 19, 2023 at 8:21am — 1 Comment
in AFCW mode, a CW KEYBOARD keys 2 sine wave oscillators at 1500 hertz & 1520 hertz, the beat frequency creates the PULSE DENSITY MODULATED CW beat frequency that will become the PDM-CW TRANSMIT SIGNAL sending to the TRANSMIT INPUT on LSB at 1500 hertz(AFCW MODE)
on RECEIVE, trigger midi mono…
ContinuePosted on October 5, 2023 at 7:08am
brief demo of using a simple DIODE/TRANSFORMER frequency doubler to get 40Khz CW out of a pi4 headphone jack, by sending to the diode doubler input, 20Khz from the pi's headphone jack
Pi4 HEADPHONE PHONE to diode/transformer/frequency doubler to class D amp input, CLASS D OUTPUT to a series resonant cap to a FERRITE ROD…
ContinuePosted on July 21, 2023 at 12:43pm — 1 Comment
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