hellschreiber pronounced hell shrey - ber i think is a technology invented by a german chap in 1927 for use as a reliable radio communication method
post 26 Dec 2021
Beacons Radiamateur Links →
HF Beacon monitoring station
Reception of the NCDXF/IARU International Beacon Project beacons
Low cost 50 MHz Beacon
the power amplifier and the chassis were parts of a 70 mhz surplus rtx found in my junk-box and the other components too
List of449 SW beacons worldwide
List of 404 SW beacons worldwide for 20.02.2021
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Reception of the NCDXF/IARU International Beacon Project beacons
the power amplifier and the chassis were parts of a 70 mhz surplus rtx found in my junk-box and the other components too
List of 404 SW beacons worldwide for 20.02.2021