Centralia and Marion County ESDA
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Centralia ESDA on left channel.
Marion County ESDA as well as Illinois EMA on right channel.
Hardware: RTL-SDR on a Raspberry Pi 4B with 4GB of RAM.
Antenna: 17 inch fiberglass dual-band 2m/70cm omni-directional antenna with a 2.5dB gain mounted at 25 feet.