Sri Jim: You must have misunderstood. You defined the rig as the 'load' so I used your definition. Perhaps that's the problem.
Avoiding that terminology, if there is no reflected power at the rig, the SWR will be 1:1. Power can be "lost" in the antenna (hopefully radiated) or consumed in the transmission line. But, as long as there is no reflected power arriving back at the rig, the SWR at the rig will be 1:1 no matter what it is at the antenna. You are right; the antenna is usually up in the air, and some hams climb towers to make the adjustments at the antenna in order to ensure a good impedance match with the transmission line to minimize transmission line losses. But most of us with dipoles, etc., make do with an approximate match based on physical measurements. We measure the SWR at the rig to reassure ourselves that the SWR at the antenna is reasonable. And, of course, if the rig is not equipped with an ATU, we are concerned that the SWR at the rig is not high enough to be reduce final amplifier efficiency and increase heat dissipation. That was the original concern that started this thread. 73, Ron AC7AC -----Original Message----- > > And the losses are low. Losses go up with increased SWR on a given > transmission line and losses reduce the SWR measured at the load. Not correct. And how many of us measure SWR at the load? It's up in the air! 73, Jim ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
