It is highly unlikely that the inline amp is needed in conjunction with the ANT700R which already has an amplifier built in.
The Ideal splitters rated for 2.4GHz (instead of the 1GHz models) include the internal diodes and work fine. They have the advantage of being available in a retail store so there's no waiting for shipping nor any shipping costs.
http://www.idealindustries.com/produ..._splitters.jsp
As coincidence would have it, I've got a Holland HFS-2D and one each of the Ideal 1.0G & 2.4G splitters here to test this week.
