"gonzo" wrote in message ...
hi,

Can Anyone tell me what are advantage and disadvantage of using this kind of
modulation in radio transmition.
I will be gratefull for any help.
Thanks and greet from Poland

Hi Gonzo,

Probably better to post in rec.radio.amateur.homebrew on this one, if
you have access to that group.

Key advantage: you can communicate more information in less (lower?)
bandwidth. Key disadvantages: you need generally a little "cleaner"
path (it's more suseptable to interference) and/or the encoding and
decoding is more complicated.

Cheers,
Tom