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Description
According to the original accession record from the Perham Foundation, this 5-meter transmitter was built by Seal while he was an employee of Federal Telegraph Company (Palo Alto, Calif.). Seal claims that this was used for the first amateur CW (Morse code, or continuous wave) transmission between the mainland and Honolulu circa 1928. (Note: the first amateur transmission between mainland and Honolulu was earlier in the 1920s; Seal may have meant that it was the first 5-meter transmission). Seal worked for Federal Telegraph and later Hancock Field in Santa Monica, California. He applied for membership to the Institute of Radio Engineers in 1929. Shown here with two Cunningham CX-381 tubes from the Perham Collection of Early Electronics, from an unrelated donation.
Type
image
Identifier
290BF45A-4FC9-43F4-8258-881000172213 2003-1-2252
Subject
Radio--Transmitters and transmission (LCSH) Morse code (LCSH) Amateur radio stations--History (LCSH)
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