Dirk,
Yes, the same sample rate, but some people don't understand that and do crazy things,
so I just say it is much easier to use identical codecs. However, anything above 0 is
unnecessary, unless you use using FM, ESSB or maybe some digital modes, and/or if you
have two sold high bandwidth lines (going up). I am running several remote stations, only
one is using codec 2 and the rest 0 with no complaints.
73,
Mitch DJ0QN / K7DX