RF Combiner – Model D6251 – 4-Way In-Phase Connectorized Combiner covering the full 13-15 MHz band rated at 10,000 W CW. RF Combiner – Model D6251 is designed for military and commercial applications and operates with less than 0.25 dB of Insertion Loss. The D6251 operates with better than 25 dB Isolation. Choose your specific connector configurations from a list of options. Additional connector configurations for our RF Combiners and RF Dividers, Non-Coherent Combiners and N-Way Combiners are available upon request.