"...However, where I am having an issue is when my poor receiving Vertical antenna is NOT receiving a signal my Well receiving Horz antenna is, and then Some times reverse. I would like to be able to "mix" the main onto the sub, and the sub onto the main's earphone.."
The only way this would work is to always mute the weaker side, and always feed the strong side into both headphones. As stated by several others here, true combining would not work because of the varying phase difference between the main and diversity inputs. We implemented combining for diversity digital (QAM) receivers back in my microwave days at Rockwell. The IF combiner continuously rotated the phase of the diversity receiver so as to keep the combined amplitude at a maximum. This was not a trivial process. And, of course, both receivers were fed with the same local oscillator. For analog receivers, we used a simple A/B diversity switch where we switched to the stronger side when the signal we were on was getting close to threshold and the other side had a better S/N. Couldn't do this with digital signals since a simple switch would cause a frame hit/re-sync. So the IF combiner was used for diversity reception in our digital radios. Phil - AD5X ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
