The 2212IFD, 2414IFD and 2818IFD will pass DC power from any output to the input. There is a 0.8V drop across the diodes which are included to prevent one receiver from passing power back to another receiver. They are particularly useful in CATV headends as the multiple receiver LNB powering provides redundancy against losing LNB signals due to a receiver failure. Unused outputs should be terminated to achieve optimum flatness, return loss and isolation. All models Freq.
Isolation is between closest outputs.
D indicates series diode. Dimensions are inclusive of connectors. Thru loss figures are typical between 950 and 1450 MHz. At 2150 MHz, thru loss is approximately 0.5 dB higher.