RF Combiner – Model D3821 – 2-Way In-Phase Connectorized Combiner covering the full 77-2200 MHz band rated at 100 W CW. RF Combiner- Model D3821 is designed for military and commercial applications and operates with less than 1.0 dB of Insertion Loss. The D3821 operates as a non-isolated combiner. 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.