Alan Dick’s FM StarPoint branched combiner provides an inexpensive method to combine two or more low power signals. RCCS combiners employ bandpass filters and various lengths of transmission line configured to make these filters mutually invisible.
RCCS bandpass technology offers intermodulation suppression of both the combined frequencies and any other frequencies in the local environment. The 4” aluminium cavities provide the passband insertion loss. Also, Invar tuning rods on copper center conductors provide the required temperature stability.
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