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electron tubes
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Photo credit: © Twilight_Art_Pictures / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: anode, anthracite, cathode, electrode, electron, gas, glasrohr, hochvakuum, lochblech, pc88, radio, rhrenradio, tube, tubes, tuner, tungsram, vacuum, valve, wabenblech