Duplexer/Splitter/Combiner

Comet calls these "duplexers", but they are also referred to as combiners or splitters. They are basically band-pass filters, simultaneously passing RF in both directions through the common connector while the band-pass filters provide a
high degree of isolation between ports.

* TX and RX from two radios at the same time into a dual-band antenna

* Combine a dual-band radio with separate outputs into a dual-band antenna

* Separate a single connector duplexed radio into separate antenna systems
* Allow a single coax run into two antennas at the top of the tower, and two radios at the bottom by using a duplexer at both ends of the coax run, avoiding cost and weight.

HF-6m/2m-70cm duplexer for the IC-706/MKII/G, FT-100, FT-857/D, FT-897/D.
To match the RX freq range of the IC-706MKII/G the CF-706A was engineered to pass the commercial FM band of 88-108MHz.

Band Pass Ins. Loss Max Power
1.3-57MHz 0.4dB 350w PEP
75-550MHz 0.4dB 350w PEP

Isolation: 40dB minimum

CONNECTORS: Common: SO-239
Low pass: PL-259
High Pass: PL-259