• katriik@lemm.ee
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      6 days ago

      Interesting enough, this could also be a diode because it only allows one way passage.

    • meyotch@slrpnk.net
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      7 days ago

      Such a capacitor is used to fine tune antenna performance, so it is an inherent part of that particular subsystem. Anyone who has disassembled an older radio has probably run across one of these rotary air gapped type before.

      Inductors use a coil to store energy whereas capacitors use plates separated by a dielectric material, which is air in this case.