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http://worlditc.org/h_07_meek_spiri_029_041.htm
Scroll down and see the schematic for the machine. What's interesting is that they use 10-12 ft. antennas (which today could be replaced by simple CB antennas). For a more clear schematic and samples of the voice contacts using the tones: http://worlditc.org/k_06_spiricom.htm Hope this helps you to get a better understanding of the equipment and theory involved with this time-consuming research. Jeff |
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