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3 1/8" X 3 1/8" (79mm X 79mm)
(side embossed) KEYSTONE RADIO TOP E.S.S. CO. LIGHTNING ARRESTER |
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3 1/8" X 2 1/2" (79mm X 64mm)
Picture courtesy Mike Green |
Duplex: Keystone Porcelain
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3 1/8" X 3 1/8" (79mm X 79mm)
(side embossed) KEYSTONE RADIO TOP E.S.S. CO. LIGHTNING ARRESTER |
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3 1/8" X 2 1/2" (79mm X 64mm)
Picture courtesy Mike Green |
These duplex versions were used to connect two antenna wires to ground. This is brown glazed dry process porcelain.
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