Nope, the AP25 control head does not work on the J300(0)X junction
boxes.
It communicates on Robnet2 and needs the (looks almost the same)
AC10/20/30 box

Note of caution, the AP35 control head does not mix with the AP20/21/22
control heads. (that do work on the J300(0)X junction boxes)

schreef:
Does anyone know if the new AP25 control head can be used as a remote
on an older AP35 system? It looks like they both use the same junction
box which would imply compatability, but it's difficult to get a
straight answer out of Simrad.

If not, I'd be interested in buying a used AP35 control head.