How to Split RTK Corrections to Multiple Remote Rovers

Most RTK operations involve using one radio modem with one remote rover, but sometimes it becomes desirable to have one radio modem provide RTK corrections to more than one remote rover GPS receiver. BlackBox (www.blackbox.com) can provide the following RS232 splitter product which makes a good solution in this case: http://www.blackbox.com/Catalog/Detail.aspx?cid=45,85,790&mid=452 Apparently they will build this device "custom made", with the appropriate connector size (DB25/DB9) and gender (M/F). In this way, a single radio modem can feed two separate remote rover GPS receivers at the same time using a single (split) RS-232 cable.