Tag Archives: QRM abatement

First Band, Top Band

Posted on by June 2, 2021
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On 20 March 1923 Secretary of Commerce Herbert Hoover convened his second national radio conference and, as before, the ARRL was there in force. A May QST photo shows Maxim at center flanked by C. F. Jenkins, identified as “inventor of radio transmission of photographs,” and Major General G. O. Squier, US Army, Chief Signal Officer. Paul Godley of transatlantics fame and ARRL Secretary Kenneth Warner can be seen in the background. Besides Maxim and crew, other prominent participants from … Continue reading →

Cooperation and QRM

Posted on by June 2, 2021
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In mid-February 1916, coincident with Maxim’s second article on relaying, one of the first organized relay tests was run. With everyone sharing very little spectrum, cooperation was the only way to avoid QRM (a constant fact of life at the time) and hear weak, distant signals. In a rare cooperative operation between an amateur group and the government, a relay test was conducted on Washington’s Birthday by Colonel W. P. Nicholson, 9XE at the Rock Island Arsenal in Illinois, and … Continue reading →

Trunk Lines

Posted on by June 2, 2021
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Clearly, Maxim’s main goal was to establish reliable relaying across the entire country. He was excited by its collaborative nature. In the third and last free issue of QST he wrote, “The co-operation of a few unknown but nevertheless kindred spirits between Portland, Maine and Portland, Oregon, by means of which the message is handed on, adds a touch to the whole scheme and makes it almost Utopian.”1 It was the primary reason for organizing the League, whose membership had … Continue reading →