Woodrick, Ed wrote:
> Saying D-STAR IS plain FM is even worse than calling PM, FM. There's a
> difference, a very big difference. FM=Frequency Modulation. D-STAR <>
> Frequency Modulated, no way, no how.
>
> Can a FM transmitter send a GMSK signal? Well, a FM transmitter can be
> modified to do so, but then it really isn't an FM transmitter anymore. Normal
> FM transmitters often have all sorts of audio shaping to optimize
> transmission.
>
<snip>
I wrote an article for CQ VHF magazine (Winter 2009 issue) that
describes how GMSK works in D-STAR, without going too deep into the details.
I put a pdf version of it out on my web site, if anyone is
interested in reading it.
http://www.k0nr.com/Files/CQ%20VHF%20Article%20on%20D-STAR%20modulation.pdf
73, Bob
Bob Witte K0NR
[email protected]
