October 2023 Blog Posts (3)

DiY TWiN COiL FERRiTE ROD VLF band RX Antenna - QRQ CW RX test - built from C. CRANE's TWiN COiL google patent info

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…

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Added by Chuck aa0hw on October 19, 2023 at 8:21am — 1 Comment

Pulse Density Modulated CW(PDM-CW) by CW KEYBOARD sending binaural beats via 2 sine wave oscillators

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…

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Added by Chuck aa0hw on October 5, 2023 at 7:08am — No Comments

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