Pinterest • 世界中のおしゃれアイデアまとめ

Pinterest でおしゃれアイデアをまとめましょう!

1929 style ham transmitter, rear view.

SHTF Survivalist Radio Frequency Lists

SHTF FREQUENCY LIST - Prepper Survivalist Channel Frequencies Chart VHF UHF HF CB MARINE HAM FRS GMRS PMR MURS FM SSB AM

Kanbo Yoshida Amplifier 直熱管アンプ

Tuned Transmitter, by Guglielmo Marconi, 1899. Marconi’s first tuned transmitter, completed at the Haven Hotel, Poole. The square wooden frame carries two windings, one linked to the Leyden jar and the brass balls that form a spark-gap. The single turn of the second winding was connected between an aerial and earth

3ワット モノラルアンプの画像:オーディオ大好きおやじの日記

Lovely junk-built crystal radio

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電鍵 – Telegraph key - JapaneseClass.jp

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Altoids Tin Radio

MAKE | Altoids Tin Radio

SUPERSCOPE CR-4500