Hi,

For over 85 years now (Armstrong, 1918) the superheterodyne circuit is at
the base of all transceiver without exception I believe.
That is was built in 1920 or in 2004 the "superhet" is always there,
excepting that today instead of using a single IF there 3 of them and some
additional amplifications and filtering stages.

But, among the "most" expert engineers of you, is there a way or does it
already exist somewhere some experiments to create a new model of
transceiver using another technology ?

A question I 'd like an answer to try to define the future of amateur radio
for my history of amateur radio...
http://www.astrosurf.com/lombry/qsl-ham-history.htm

Thanks in advance

Thierry, ON4SKY