Started Feb 14, 2015
Started this discussion. Last reply by Chuck aa0hw Oct 1, 2020.
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FILTA LV2 PLUGINS - http://openavproductions.com/doc/artyfx.html
NOTE: The delay from start to finish - going through 4 instances of FILTA LV2 cw audio filter modules, being connected in series, measured to be only 2.5…
ContinuePosted on February 8, 2021 at 9:00am
experimental setup to QSO QRQ CW at 18Khz VLF RF over ip - using a PEER to PEER Gstreamer PIPELINE TCP/ip setup and a Raspberry PI as a REMOTE VLF RX/ RE-TRANSMITTER
a PI2B is setup to RECEIVE another OP's VLF RF over IP transmission(CW at 18Khz) using a Gstreamer rtp TCP/ip PIPELINE - using the WAVPACK CODEC...the PI2b…
ContinuePosted on February 1, 2021 at 11:45am — 1 Comment
test to see how stable the CW TIMING is at QRQ CW speed * 80 wpm * when using ASEQNET server/CLIENT setup midi over tcp/ip
http://ccrma.stanford.edu/planetccrma/man/man1/aseqnet.1.html
a MIDI CW KEYBOARD is used as the CW MIDI…
ContinuePosted on January 30, 2021 at 3:19pm
brief rundown of using a large FERRITE CORE LOOPSTICK tuned ANTENNA to hook up directly to the sound card input...and then use some SDR software modules to get rid of HUM, NOISE, HISS and other EMF QRM from the house wiring emf'N into the RX antenna etc...
the ULF CW TRANSMITTER is a PI 4's audio output - going to a 30…
ContinuePosted on January 25, 2021 at 12:46pm
this is a follow up from the first video here - https://youtu.be/pfWvh82Qh20
in this video....QRQ CW is being transmitted out on the ULF band at 797 hz and at 75 wpm to a small horizontal wire loop antenna @ about 30 watts from an audio amp/4 to 1…
ContinuePosted on January 5, 2021 at 12:00pm
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