I've put this in the Science section, because the thought is quite scientific in the details, although it does involve ancient monuments. I have been studying ancient structures to see if there is evidence of ancient technology. Certainly Tiahuanaco carved stones are very complex and the local population say it was built by the Gods overnight. Quite often nobody knows who built these structures and it is presumed they fit in with local archaeology. I am particularly interested in the anomalies of these sites. In Mexico for example at the Pyramid of the Sun and Moon it was found that the upper chamber floor had a thick slab layer of Mica, that had travelled 2000km in one giant piece! And that the other flat topped pyramids had an upper surface of Mica. And the stories that surround the Ark of the Covenant. I have researched this subject for about 25 years now. The conclusion I am coming to is a little unorthodox to say the least. To help me understand the concepts better I started learning about Ham radio and am now qualified at the foundation level, and will be taking intermediate before Christmas and hopefully Full licence by the close of next year. This will allow building and testing new antenna types. What I am proposing, is that the Pyramids and Stone Henge may form a network of communication around the world, and can prove this piece by piece. Not only around the world, but off world too! A bit more in depth: Frequencies used today are classified as Longwave, mediumwave and shortwave for standard radio, but also HF High Frequency, VHF (Very High Frequency) and UHF - ultra high frequency. What you need to know is that the higher the frequency the shorter the wavelength is and also the shorter the range is. To get very long range you need Very low frequencies. Typically anything under 14MHz will bounce off the ionosphere at a low angle and reach around the world. But also travels further in space. But longer wavelengths need bigger antennas, so these structures need to be BIG! If you want a support to last a long time then it also would be best to make them from stone. In the Radio ham world there is always development in antenna design. What is relatively new is the interest in magnetic loops. These have an advantage because they receive in the magnetic portion of the RF transmission. Because of this they are quieter to listen to, because most of the background static noise is electrical in origin, and has a smaller magnetic footprint.