The R7100 receiver covers 25 MHz to 1.99999 GHz with workable sensitivity and selectivity for SSB and wider signals. It fails as the communications receiver Icom describes it as because there is no provision for receiver muting while transmitting. There is an internal receiver mute circuit that shuts it down when the PLL goes out of lock. PLL going out of lock can be triggered by the CAT CI-V interface by clearing the current memory which is the displayed operating frequency. That also clears the mode.
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