Posted by Bruce WA1HGJ on February 04, 2026 at 22:49:37.

In Reply to: Re: TDF Digital Data posted by Gedas W8BYA on February 04, 2026 at 16:55:50.

Thanks again, Gedas. Very interesting information. So looking at your waterfall, I’m wondering how a phase change applied to a pure carrier generates sidebands, ie frequencies above and below 162.000? Is it the fact that it’s a certain phase rotation (in radians) applied over a 0.1 sec time, ie something akin to a frequency (something per unit time)? The sidebands go away during the unmodulated period at the top of the minute. Very interesting stuff! 73, Bruce WA1HGJ

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