April 2022 Blog Posts (4)

DIY QRQ CW VLF TRANSMITTER & RECEIVER for Spelunking Loving QRQ CW OPs: Through The Earth(TTE) comms

this video is a follow up video form the 1st one here:

this video demo's the QRQ CW high speed morse code capability

of this TTE COMMUNICATIONS SYSTEM at VLF…

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Added by Chuck aa0hw on April 25, 2022 at 1:10pm — 1 Comment

ATTENTION: QRQ CW NET OPs - can't hear the other OP(s) ? then use this FREE websdr setup and send the weblink

if you are using WEB SDR's to hear the other OP, and don't like the long delay, try setting up a local web sdr using the following video's method and the free STREAMMyAUDIO service...then you can simulcast your TRANSMIT CW SIDETONE to your headphones AND this free STREAMING SERVICE so that any other OP(s) can go to the web link on the STREAMmyAUDIO's LIVE web page and pick up your RIG's TRANSMIT CW audio in almost REAL TIME with very low delay... here is a LIVE demo of this setup in…

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Added by Chuck aa0hw on April 20, 2022 at 9:55am — 1 Comment

UltraSonic Morse Code EMF COIL EMITTERs sending QRQ CW at a frequency of 21.121 Khz & speed of 82wpm

brief demo of sending QRQ CW via ULTRASONIC EMF using TWIN FERRITE BOBBIN CORE INDUCTOR COILs as the Ultrasonic EMF Emitters

Added by Chuck aa0hw on April 19, 2022 at 1:29pm — No Comments

Extreme Narrow Band CW @ QRQ, ELF 738hz Transmitter & Receiver, uses Trigger Midi Mono to demodulate

testing out a LARGER FERRITE CORE(loopstick)TRANSMIT ANTENNA fed by a 10 watt CLASS D audio amp transmitting an Extreme Narrow Band CW(ENBcw) ELF 738hz SIGNAL OUTPUT

see the ENBcw playlist for more info on how ENBcw is setup....…

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Added by Chuck aa0hw on April 9, 2022 at 11:58am — No Comments