The K3 is not a full-duplex radio.
At the time of the design of the K3 I was hoping we could make it a full
duplex radio with external transverters, as I was responsible for and/or
participated in the design of several subsystems in AO-40 and other
Amateur spacecraft.
The Subreceiver has its own DSP. The issue is signal isolation between
Tx and Rx and a few other
bottlenecks. Full-duplex capability would have impacted the cost and
complexity of the radio significantly, and would have been a cost borne
by all buyers of the product.
Since the initial design time of the K3, the primary focus of most
Amateur satellites has been for use with dual-band HTs using FM.
73,
Lyle KK7P
It may merit further research. The owner's manual block indicates the Rx DSP
as "DSP2" ? ...
...
Its tempting to think maybe the sub-Rx could be used duplex with
main-Tx in the K3,...
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