Posted by PUK on
URL: https://www.es-forum.com/New-RadioShack-radio-more-sensitive-tp1551607p1551665.html


In a message dated 14/01/2010 13:14:19 GMT Standard Time,
[hidden email] writes:

> The radio lets you hear some of the RF noise emmited by electronics.
Hi Bill

how cam you hear these frequencies ? which ranges are involved ? (I ant to
test my own AM radio)
Tks
Giorgio



puk replies - the AM radio simply converts the RF signals into meaningless
noise, but reflects the erractic nature of the signal by giving a unique
sound for the frequencies being picked up by the receiver and the unprotected
circuits in the radio, for instance the Plasma TV that I pick up on my AM
radio sounds like a very agressive FAX type noise, where as the noise from
the display on my dvd player gives a buzz and so on, its merely an
indicator of how a device scatters out RF frequencies (within the AM range) and is
good to determine how far reaching these frequencies are by the loudnes of
the noise generated by the radio, so as you move away from a noisy
appliance the sound will go down.


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