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3 votes

What is an undulator (as used for CW)?

an "undulator" used for CW reception circa before and during WWII. WWII? My then employer still had a Marconi UG-6 undulator in our radio lab in the mid-1980s. While Marcus M├╝ller has ...
Graham G8URP's user avatar
9 votes

What is an undulator (as used for CW)?

Since I can't answer this authoratively myself, but Mike Waters' comments indicate that search engine results of other people might be sparser than mine: A link collection: Title/Link Short ...
Marcus Müller's user avatar

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