I have to PTP800 Links, 23 and 18GHz, and I need to change the antennas. The interface/connector between the antenna and the ODU, is it standarized? What do I need to look for to ensure compatibility to direct mount the ODU to the antenna?
You can purchase any antenna you like--if it doesn't have the standard Motorola interface, you can buy a remote mount kit that will convert the Motorola interface to a standard waveguide interface. You then connect the antenna to the remote mount kit via a flexible waveguide.
Notice that the remote mount kit, flexible waveguide, and antenna are band specific.
Notice also that you may have a hard time finding these parts as we've recently obsoleted the PTP 800 and its accessories.