Innovative Power Products has launched a line of in-phase power combiners with a variety of split ratios, frequencies, and power levels. For example, model IPP-1000 is a four-way combiner that handles total power levels fo 750 W CW from 400 to 1000 MHz. Insertion loss is less than 0.4 dB across that frequency range, with maximum VSWR of 1.30:1 or less. The Isolation between ports is better than 16 dB. Amplitude imbalance is 0.2 dB or better while phase imbalance is 5 deg. or better. For more information, contact Inovative Power Products at their website: http://www.innovativepp.com/