"Steve Lusardi"  wrote:
Geof,
I bought a 1 year old Class A Simrad unit used as a demo unit for marine 
shows on eBay for $1300. Please note, there are substantial differences 
between Class A and Class B. One of which is the Class A has its own 
internal GPS among many others.
Steve
"Geoff Schultz"  wrote in message 
.  ..
 Has anyone seen any used AIS class A transponders for sale?  I do enough
 off-shore sailing to want a class A instead of a class B.
 -- Geoff
 www.GeoffSchultz.org 
I have found that my class B (ACR) works fine offshore.  The big guys
see me and I see them. 
Class B transponders also have GPS built in.
Michael Porter
Michael Porter Marine Design
mporter at mp-marine dot com
www.mp-marine.com