> I like to get more info about Manchaster modems.
Manchester encoders are very popular indeed for wide band transmissions.
The most common example probably is the tranmitter portion of your
ethernet card. It can hardly be called a modem at all, in fact.
Bear in mind that the Slowenian ham band allocation is a lot more
generous than it could ever be here in central Europe (second only
to eastern China in population density, I think) and you will not
be allowed to put wide-band modes to any real use anywhere below 6cm
here in Germany.
<non-ham mode>
And if you should really be lucky enough to have that kind of a
line-of-sight route to your destination you might as well broadcast an
entire ethernet bandwidth. Nobody is likely to even notice if you use a
decent dish :)
</non-ham mode>
Sorry to disappoint you. The 4-DPSK modems (like G3RUH and DF9IC) make
far better usage of the available band width and you can run them at
similar speeds through filters far narrower than you would need for
manchester.
Kai DF4EM