SHOWCASE
9
Communications
Equipment of WW I
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BC-15A -
Airplane radio telegraph spark-gap transmitter (USA, 1918)... more
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J-5-A -
Flameproof straight key of US Signal Corps... more
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500 B -
Early US straight key made by J.H.Bunnell... more
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Service Buzzer
Model 1914 - US Signal Corps field telegraph... more
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VT-1 - The
very first vacuum tube of US Signal Corps nomenclature (1917)...
more >>
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VT-2 -
Another early US Signal Corps vacuum tube (1917)... more
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