2.5MHz Quoting: FC69
But maybe somebody will care
i might care if i have a clue about what you are offering here
2.5MHz is quite a hypnotic tone. I worked in the RF industry for a very long time before I moved over to the Telecommunications industry. You would be absolutely amazed on how often this tone is used in RF and other electronic devices.
FCC 47 C.F.R. 15.5 (b)
It is pretty amazing what you can find with an Oscilloscope and the correct array of antennas.
-WiFi over narrow channels
-Spectral domain optical coherence tomography
-WWV continuously transmits official U.S. Government frequency and time signals on 2.5, 5, 10, 15 and 20 MHz.
Fort Collins, Colorado - Feel free to search what was being transmitted when the theater shootings occurred in Colorado.
"The initial effort to make A=440 Hz the basis of standard tuning took place in 1910 when the Rockefeller Foundation issued a grant to the American Federation of Musicians to popularize the concept. The initial effort failed.
However, the BSI -- British Standards Institute -- officially adopted A=440 Hz in 1939, promoted by the strange consortium of Rockefeller Foundation influence and the Nazi government. Ironically, The British adopted a tuning standard promoted by the Third Reich, just as both went to war. While 440Hz had been rejected by British musicians only 3 months prior, Josef Goebbels persuaded the BSI to adapt 440Hz saying it was of extraordinary importance. "
Dr. Leonard Horowitz:
"Music bioenergetically affects your body chemistry, psycho neuro immunology, and health. Your body is now vibrating musically, audibly and subliminally, according to an institutionally imposed frequency in harmony with aggression and in dissonance rather than vibrating in harmony with Love."
I don't want to hijack your thread or anything but I do guarantee all the music links and the other 1000's if not millions that are "popular" around the world were tuned in A=440.
To make a long story short A=440, 2.5MHz is being transmitted 24 hours a day all around the world.