Photo dating radio


photo dating radio-30

The single earphone headset is from the Kellogg Company and Dodd has this headset on in the 1909 photo.

Also visible in the 1909 photo is a bias adjusting resistance, probably for an Electrolytic detector, a detector switch, an air inductor, a telephone microphone and another earphone. The transmitter uses two spark coils, a homemade condenser made from glass photo plates and a homemade helix.

The transmitter is probably using lead acid batteries that are not quite visible below the small "receiver" table. It is a "pre-regulations" ham station that is virtually complete, authentically reassembled and is displayed with photographs, taken in 1912, showing Dodd using his station.

Most of the 1909 Station parts seen in the photo were used to construct Dodd's 1912 station (below.) This is the Wireless Station that M. Dodd's station survived intact because the new regulations (the 1912 Radio Act (Alexander Bill) that went into affect in December 14, 1912) made both Dodd and his station illegal.

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