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Noovember 2026 Membership Meeting - Room A207

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How Clean is Your HF Signal ?

 

Our November meeting will help you answer this question. The ARRL Clean Signal Initiative (CSI) is a recent and important program that worked to develop specifications and test procedures that now influence equipment design and manufacturing. The program is also to educate amateurs themselves about signal purity. In plain terms, it asks whether the signal leaving your antenna is as clean as it should be, and how to ensure it is.

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The problem is familiar to anyone who has operated in a crowded HF band or a contest. Key clicks on CW and splatter or distortion on SSB can make a signal far wider than it needs to be. A poorly behaved transmitter takes up more spectrum than necessary, gets in the way of everyone nearby, and doesn’t exactly keep the FCC incredibly happy either.

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Our guest speaker will explain how the initiative started, where it stands, what it means for the gear we buy and operate, and how every ham can help keep the HF bands clean.

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Presenter

Mike Ritz - W7VO

​​Mike is a longtime advocate for transmitted signal quality and has been a driving force behind the ARRL’s “Clean Signal Initiative”, working to build collaborative support among major amateur radio manufacturers, amateur radio’s best-known RF engineers, and the ARRL Lab. Professionally, he is retired from a 35-year career as an engineer, manager and director in the microwave and telecom data industry.

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