Bill, It gets a little complex, but actually by connecting the parallel wires in a coil like that together, you've caused a mighty phase cancelation and \ defeated the purpose of the long wire.
What you want is either an antenna that's tuned to the frequency you want to hear, hard because you want them all, or as much wire spread out as much as possible. Even a single wire coiled up is going to look to the radio like a large inductance and not have much area coverage, so won't do much good. I'd spend some extra on an "active" short wave antenna, i think C Crane sells one.. These are a moderately sized whip with an amplifier and some tuning circuitry in the base. It means you have to "peak" the tuner at each frequency you want, but if you can't put up an outdoor long wire, this kind of thing is about as good as you can do. If your home has metal rain gutters you can try a wire out a window to a downspout, but there are issues with non conductive joins and so on so that the results are likely to be varriable at best. There are "resonant' receiving loop antennas but they're good for only a limited frequency band, and are a bit hard to build. Just small loops of wire don't do well at all. Tom Fowle WA6IVG
