Hunting down sources of intermod on the AM MW BC band

[wa2ise]

Originally Posted by Reece

So the two powerful NY stations beat against each other, superhet style, yielding a signal the same as your local, and the "imperfect contact" detector, early wireless style, completed the "radio."

That's what I thought at first, but I have a friend who does stuff like this professionally,, and it's one station's frequency (the higher of the two) doubled minus the other station, though in this case it comes out the same. Looking at the algebra, it looks to be in fact the same, first station minus the 2nd, then add the frist station. Same as twice the first station minus the 2nd. I ain't that swift at math, that I could spot that quicker...

Another thing, the transceiver was hearing, albeit weakly, some SW broadcast signals, when I had the antenna switch switched away from teh transceiver (and to another SW set). Once I tighened the loose connector, that weak reception went away, and now I get reception on the transceiver only when the switch selects it. I haven't transmitted lately, it might make a horrible mess of the SW bands around here if I did with the loose connector.