New week, new #hamchallenge - this week:
Research the history of your callsign!
Did your callsign have a previous owner?
When were callsigns with the prefix you use first issued? In how far does your callsign indicate your geographical location?
Let's hear the results of your research - a few have already finished this challenge and provided interesting insights!
https://hamchallenge.org/2025/4 #hamradio
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