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My question is about radio proximity. A modern day transceiver (HT, mobile) is both a transmitter and a receiver built into one unit. And I understand that RX is automatically shut down whenever TX is initiated, thus saving the receiver internals from being fried. (Pros can correct me, is this true?). Many, many years ago (and in a place far, far away), in the Air Force, I was a radio man. Mostly we used HF-SSB and some VHF. The transmitter and the receiver sites where massive facilities and physically located literally miles away from each other and thus didn’t have the problem of frying receivers to worry about. And further, as a kid I remember my dad’s old ham setup. The transmitter and the receiver were in separate metal chasses, as were the power supply and some other equipment he had, (filled up his entire 72" wide radio/hobby table). I think each unit must have been shielded because they weighed about a ton each. I don’t recall the RX being shut down when he transmitted, but I was a small boy, and did not understand the equipment…one of them could have been some sort of switch that shut down RX as needed, I dunno. Today, in my “shack” (a 24 inch wide, 2-level shelf I built), I have several mobile radios physically mounted right next to each other and a couple of power supplies. My question is, if any two or more radios are on, and I transmit on one, will it fry the internals of the those receiving, because they are physically located right next to each other? Comments please, and thanks! ... Edit: Should have ready 72 inches, not 72 feet.