June 18th 07, 01:49 AM
posted to rec.radio.shortwave,rec.radio.amateur.antenna
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First recorded activity by RadioBanter: May 2007
Posts: 182
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Minimum photons-per-second [amplitude] required for 150 KHz?
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In rec.radio.amateur.antenna Radium wrote:
On Jun 17, 4:38 pm, "Mike Kaliski" wrote:
300,000
photons per second should do the trick, as that is the frequency of
the
original signal and each photon can represent the amplitude of each
half of
a single sine wave.
So the amount of photons-per-second should be double the frequency of
the carrier-wave? In my first post of the thread, I stated that the
carrier frequency for the AM signal is 150 KHz. Each photon in that
signal is 150 KHz. It's possible to have one 150 KHz photon, right?
My question was relating the modulator wave. If I have using 150 KHz
photons for my carrier-wave on AM radio, what is the minimum amount of
photons-per-second I would require to transmit, a modulator-signal
[through the 150 KHz carrier-signal] of 20 KHz? I am guessing 40,000
150-KHz-photons-per-seconds. Am I right?
No.
For AM with a 150 Khz carrier and a steady 20 Khz tone, you have to emit
1 130 Khz photon, 2 150 Khz photons, and 1 170 Khz photon approximately
every 12 microseconds.
--
Jim Pennino
Remove .spam.sux to reply.
Nicely put Jim.
Mike G0ULI
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