[Reece]

"More wire, up higher" is the usual mantra for crystal set antennas. I never used any fancy designs but just a single long wire, as long as the property would allow, and as high as I had attachment points. Be sure your antenna ends have good insulators. The one I have now is No. 14 insulated wire, black plastic insulation, bought off the reel at Lowe's. The end insulators are classic glass ribbed ones. The lead in wire is the same as the antenna. It goes from the top of the chimney about 30 ft. high out to a metal TV pole about 20 ft. high, total length 60 ft. Your X antenna as long as it's supported by insulators should be fine. Mine works great for all radios, xtal included.