Chuck aa0hw's Blog – July 2021 Archive (6)

follow up from the previous video where the iphone is sending cw...

https://youtu.be/9Hmk_AHes6Y

this time, the iPHONE is receiving CW over its own MUMBLE VOICE CHAT iphone APP - but instead of using wifi, the iphone is using The 5G NETWORK...

to test and see how well you can send and receive…

testing the HASAK CW KEYER for low latency performance running JACK AUDIO CONNECTION KIT at  48K sample rate at 2 periods of 144 buffer frames

the CW KEYER from the time you hit the paddle until you hear the sidetone, while listening to the HASAK USB SOUND CARD inside JACK CONNECTION BAY

          is only 8…

Here is mine:   (from this morning's QSO with  w4dbv)

the SPEC GRAPH and SCOPE are showing Brian's signals on my k3s receiver 

the FLrig APP controls the rig from my remote position in the living room...…

test to see how well an audio derived cw keying circuit, like one of these:

https://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer

can "key" the HASAK CW KEYER's straight key pins...and allow a software CW KEYBOARD…

cool python script i just found for to activate a usb webcam for LIVE VIDEO & LIVE webcam mic AUDIO

Script modified from here: https://brettviren.github.io/pygst-tutorial-org/pygst-tutorial.html

uses…

TRANSMITTER SETUP:

CW KEYBOARD sends 82 hertz CW out one of the sound card's line output jacks to a class D 30 watt audio amp... the audio amp output is connected to a FERRITE BOBBIN CORE INDUCTOR COIL (@ 1.8mH) - the output of the 30W audio amp 1st goes to a POWER TOROID TRANSFORMER with multiple windings and tested to…