Radium
May29-07, 05:02 AM
Hi:
Let's say I am in a space station which has a supercooled 150 KHz DX
analog receiver that receives the magnetic fields [while ignoring the
electric fields] of extremely weak 150 KHz AM analog carrier signals.
In addition, this receiver is so sensitive and powerful that it can
clearly pick up AM carrier waves as weak as 10^-10,000 watt [i.e. 10-
to-the-power-NEGATIVE-10,000 watt]. Also, this receiver has an
astronomically-powerful amplifier which amplifies the extremely-soft
carrier waves until the resulting modulation signals will be just loud
enough for the human ear to detect. Following this amplification, the
carrier waves are demodulation to modulation waves - the stuff we
"hear" - and then sent to loudspeaker so those onboard can hear those
sounds. In addition, all the audio devices filter out modulation
signals that are below 20 Hz or above 20 KHz [after reception, before/
after amplification and demodulation], as the human ear only responds
to 20-20,000 Hz.
If I am on this spaceship, what will I hear on the radio? My guess is
that I would hear long-distance magnetic disruptions. Would these
magnetic disruptions sound like the high-pitched, psychedelic
heterodynes that resembles the sine-waves tones of the Emergency
Broadcasting System?
Thanks,
Radium
Let's say I am in a space station which has a supercooled 150 KHz DX
analog receiver that receives the magnetic fields [while ignoring the
electric fields] of extremely weak 150 KHz AM analog carrier signals.
In addition, this receiver is so sensitive and powerful that it can
clearly pick up AM carrier waves as weak as 10^-10,000 watt [i.e. 10-
to-the-power-NEGATIVE-10,000 watt]. Also, this receiver has an
astronomically-powerful amplifier which amplifies the extremely-soft
carrier waves until the resulting modulation signals will be just loud
enough for the human ear to detect. Following this amplification, the
carrier waves are demodulation to modulation waves - the stuff we
"hear" - and then sent to loudspeaker so those onboard can hear those
sounds. In addition, all the audio devices filter out modulation
signals that are below 20 Hz or above 20 KHz [after reception, before/
after amplification and demodulation], as the human ear only responds
to 20-20,000 Hz.
If I am on this spaceship, what will I hear on the radio? My guess is
that I would hear long-distance magnetic disruptions. Would these
magnetic disruptions sound like the high-pitched, psychedelic
heterodynes that resembles the sine-waves tones of the Emergency
Broadcasting System?
Thanks,
Radium