<div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">tis 2 dec. 2025 kl. 22:49 skrev Donald Tillman <<a href="mailto:don@till.com">don@till.com</a>>:</div></div></div><div dir="auto"><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div style="line-break:after-white-space"><div><br></div><div>It's also exactly how Morse code radio is received. (Morse code radio does not transmit beeps. The beeps are at the receiver where the local oscillator mixes with the received RF signal.)</div></div></blockquote><div dir="auto"><br></div><div dir="auto">Not only morse code (CW) but also single side-band transmission (SSB), which is standard in HF radio. It uses half the bandwidth of AM, and also potentially it needs less power than AM since the carrier doesn't have to be transmitted.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div style="line-break:after-white-space"><div dir="auto"></div></div>
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