tag:blogger.com,1999:blog-7590176649168185428.post181289680779270883..comments2024-03-28T16:26:00.782-04:00Comments on SolderSmoke Daily News: USB/LSB Urban Legend DEBUNKED!Bill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7590176649168185428.post-67634213439646649782012-05-08T18:40:23.217-04:002012-05-08T18:40:23.217-04:00I wonder why is it conventional to use LSB for RTT...I wonder why is it conventional to use LSB for RTTY on 20m?Dominic Rivronhttps://www.blogger.com/profile/02618013365521035400noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-37038667903801498762012-05-08T07:33:37.037-04:002012-05-08T07:33:37.037-04:00I have read in a Swedish magazine Resonans http://...I have read in a Swedish magazine Resonans http://esr.se/resonans/ESR%20Resonans%203%202011.pdf on page 9 about this. <br /><br />In the early days of SSB they started at a very low frequency:<br /><br />30 kHz LSB – 485 kHz oscillator<br />455 kHz USB – 4485 kHz oscillator<br />3990 kHz LSB<br /><br />To get to 20m they used another IF after 455 kHz so it became USB. <br /><br />The article has some references so I think you can go there for more info on this.<br /><br />Eric SA5BKEAnonymoushttps://www.blogger.com/profile/18292915581347370293noreply@blogger.com