experimental QRQ CW TRANSMIT FILTER to achieve a very narrow RF bandwidth on QRQ CW TRANSMIT - VLF BAND TEST

[Chuck aa0hw]

VLF BAND TEST on 10101 Hz
20 watt VLF AMP to compact DELTA LOOP ANTENNA
received by a Ferrite rod RX VLF antenna connected directly to this recording laptop's MIC INPUT jack, demodulated from VLF into CW AUDIO by the AD5DZ SDR APPs: LO-MIXER & FILTER modules

CW TRANSMIT VLF RF Gstreamer BANDPASS FILTER script used:
gst-launch-1.0 jackaudiosrc ! queue ! "audio/x-raw,channels=1,rate=48000,format=F32LE" ! audioconvert ! audiowsincband mode=band-pass lower-frequency=9801 upper-frequency=10301 length=8000 window=hamming ! audioconvert ! audioamplify amplification=1 ! audiorate ! queue ! jackaudiosink