Tanuj, i didn’t understand your post. Here are some remarks that might help clarifying.
– for me, “1TX+2Rx” means rx diversity
– “the feeder cable goes directly on the GRFU/DRFU” I don’t know those acronyms… but if the trx is configured as “1TX+2Rx”, then it expects 2 RX inputs. Those 2 Rx inputs cannot be carried by the same feeder.
You have to assume that I’m a beginner and explain everything from scratch, because I am confused !