1 Results found for "Dosya:Spark_transmitter_at_Ambon_Indonesia_1921.png".

Dosya:Spark transmitter at Ambon Indonesia 1921.png

89 976 696 Frequency band switching controls 4 129 116 371 976 696 Power panel English Spark gap radiotelegraphy transmitter, Ambon, Indonesia, 1920...

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