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  1. The old radio sound with Paper Cup Piezoelectric Speaker

    The old radio sound with Paper Cup Piezoelectric Speaker

    19
  2. Low voltage tube operation 02, 5AT8 Regenerative Radio

    Low voltage tube operation 02, 5AT8 Regenerative Radio

    13
  3. Vanishing in Tokyo hospital

    Vanishing in Tokyo hospital

    23
  4. Sound Indicator presentation for Science Class

    Sound Indicator presentation for Science Class

    23
  5. The sound of TAISYO KOTO 'My Blue Heaven'

    The sound of TAISYO KOTO 'My Blue Heaven'

    12
  6. A kind of 1960-70s Japan's industrial high school education

    A kind of 1960-70s Japan's industrial high school education

    16
  7. Osaka city mystery in Japan

    Osaka city mystery in Japan

    26
  8. Is there NO RELATION ?? Olympic & Infection in Japan...

    Is there NO RELATION ?? Olympic & Infection in Japan...

    11
  9. Battery-Drive Single tube AM Transmitter

    Battery-Drive Single tube AM Transmitter

    9
  10. 1960-70 Japan's H.S.Education Video, Thermochemical reaction

    1960-70 Japan's H.S.Education Video, Thermochemical reaction

    6
  11. Be careful Chinese HOAX products

    Be careful Chinese HOAX products

    10
  12. 6i1P(6AJ8)Single AM Transmitter testing in science lab

    6i1P(6AJ8)Single AM Transmitter testing in science lab

    16
  13. Japan's 300-Years-ago-common-sense shows why mRNA Vax is DANGEROUS !

    Japan's 300-Years-ago-common-sense shows why mRNA Vax is DANGEROUS !

    22