Hi all,
I think the max Power the combiner should take is no problem.First you must know the Power rating (watts)of each carrier say 20watts=43dBm.Depending on the number of carriers you want to combine,you simply do the summation of the wattage power of the various carriers.Say 4 carriers of 20watts each then the sum will be 80watts.Give a Tolerance of +5% then your selction for a four carrier conbiner should range from 85 to 90 watts.
I think this clarifies you Palani.If you still have some queries do not hesitate to indicate ASAP.
BR
Vuyof