Teslascope

A Teslascope is a radio transceiver that was alleged to have been invented by Nikola Tesla for the purpose of communicating with life on other planets. Even though Tesla talked about interplanetary communications on many occasions, it has never been confirmed that he built this particular device.
It is sometimes associated with the 'paranormal' Hyperdimensional Oscillator.
Claims
The claim that Tesla created a device called a “Teslascope” grew out of Arthur H. Matthews' 1970 book, "The Wall of Light: Nikola Tesla and the Venusian space ship, the X-12" (OCLC 2094500). Matthews, who had apprenticed under Tesla at the turn of 20th the century and worked for him until Tesla's death in 1943, wrote that Tesla had designed it in order to communicate with extraterrestrial beings. Matthews made other more extravagant claims, such as Tesla having been born on Venus. This was supposedly told to him by "Venusians" who he said had visited him at his home in Lac Beauport, Quebec, Canada. Matthews also claimed that he built a model of a Teslascope in 1947 after Tesla’s death and operated it successfully, although it is hard to verify this claim since Matthews left unclear documentation of his work.
Talking with the planets
Tesla had mentioned many times during his career that he thought his inventions such as his Tesla coil, used in the role of a , could communicate with other planets. In 1896, Tesla told interviewers:
In 1899 while investigating atmospheric electricity using a Tesla coil receiver in his Colorado Springs lab Tesla observed repetitive signals, substantially different from the signals noted from storms and Earth noise, that he interpreted as being of extraterrestrial origin. He later recalled the signals appeared in groups of one, two, three, and four clicks together. Tesla thought the signals were coming from Mars. Analysis of Tesla's research has ranged from suggestions that Tesla detected nothing (he simply was misunderstanding the new technology he was working with) to claims that Tesla may have been observing naturally occurring Jovian signals.
In 1901 Tesla said the following about his 1899 Colorado experiment:
In Time magazine’s July 20, 1931 issue celebrating Tesla's 75th birthday Tesla stated:
 
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