Posted by
Leigh L. Klotz Jr WA5ZNU on
Jun 18, 2004; 12:08am
URL: http://elecraft.85.s1.nabble.com/K1-on-USB-CW-tp367868p367880.html
I just picked up a copy of the June CQ in the airport bookshop and p.28
has a sidebar by K2MGA (CQ Publisher) on the history of SSB:
Regardless of how the SSB signal was
generated, the 455 kc USB signal was mixed up
to 9 Mc. Using a converted war-surplus
BC-458 transmitter...as a VFO, the
4.0 to 5.3 Mc output was either added
to or subtracted from the 9Mc SSB
signal. That produced a USB signal on
20 meters or an LSB signal on 75 meters.
(That's the origin of the world-wide
convention: LSB below 20 meters; USB on
20 meters and up. ..)
On Thu, 17 Jun 2004 5:37pm,
[hidden email] wrote:
> No, that's just not true. Urban legend.
> ...
> Now if you use a 5 MHz SSB generator and a 9 MHz VFO you *do* get
> sideband
> inversion.
73,
WA5ZNU Leigh
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