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There are two AM/FM radios, about 100 feet apart. Both are tuned to a local music radio station, so they're playing the same song, but one radio is playing the song about 4 or 5 seconds behind the other one. I wouldn't have thought that was possible. Is there something funky with the electronics in the second radio that causes a delay in outputting the signal?
Are they both the exact same type of radio
It probably depends on how quickly the circuitry in both boxes decodes the incoming signal. There's also the possibility that one or both is detecting a radio echo instead of the original signal.There are two AM/FM radios, about 100 feet apart. Both are tuned to a local music radio station, so they're playing the same song, but one radio is playing the song about 4 or 5 seconds behind the other one. I wouldn't have thought that was possible. Is there something funky with the electronics in the second radio that causes a delay in outputting the signal?
It probably depends on how quickly the circuitry in both boxes decodes the incoming signal. There's also the possibility that one or both is detecting a radio echo instead of the original signal.
essentialsaltes said:I was thinking echo, too, but for several seconds to pass, it would have to be to the moon and back several times.
Another possibility is that one is receiving the analog signal while the other is receiving a digital HD radio signal. These are often out of sync by several seconds, I guess due to the time it takes to encode the digital signal. There are products that allow broadcasters to counter this by delaying the FM signal to match. The link there says "Because there is an obligatory delay of roughly 8 seconds in the digital program encoding and decoding process present in HD Radio..."
Poking around, I see that in some cases you need to flip your radio to 'baseball mode' and turn off the HD. If you're in the stadium listening to the play-by-play, the 8 second delay in the HD broadcast can get confusing.
Or the SunI was thinking echo, too, but for several seconds to pass, it would have to be to the moon and back several times.
That's probably the cause, though if the radios are of the same make with the same settings, my money's on echo.Another possibility is that one is receiving the analog signal while the other is receiving a digital HD radio signal. These are often out of sync by several seconds, I guess due to the time it takes to encode the digital signal. There are products that allow broadcasters to counter this by delaying the FM signal to match. The link there says "Because there is an obligatory delay of roughly 8 seconds in the digital program encoding and decoding process present in HD Radio..."
Poking around, I see that in some cases you need to flip your radio to 'baseball mode' and turn off the HD. If you're in the stadium listening to the play-by-play, the 8 second delay in the HD broadcast can get confusing.
Many years old? Wouldn't the signal have long since dissipated?They could more likely bounce around in our atmosphere, there are many cases of people receiving radio waves from the past...even many year old radio broadcasts.
But - radio waves can bounce around the atmosphere and return to Earth? What exactly would they be bouncing off of?
1% interest per week.I had asked this question once before, quite some time ago, and I'm curious if I'm a bit ahead on reaching a silly target goal of mine.
I currently have 27,358,080,858 Blessings in my savings account.
Based on the blessings system here and the interests a person receives weekly, how long before I'll be at 100 billion?
Thanks ahead.
For atoms the situation is even more miniscule. Just like we don't take account of gravity when doing calculations in atomic physics the effects of a universal expansion on an atom are utterly utterly negligible and immeasurable.
By all means, explain radiometric decay using only electric currents.We do not take account of gravity in the atom because gravity does not apply in the micro, only electric currents control the atom,
When an orbiting craft such as the space shuttle is returning to Earth, is there some reason it has to travel through Earth's atomosphere so fast, generating all the potentially dangerous friction and heat? Isn't there some way (reverse thrust or something) that it could follow a proper trajectory at a slower speed?
The friction and heat isn't all that dangerous - there is plenty of shielding to prevent major damage, especially to the human cargo. As essentialsalts said, coming down at a slower speed would require an awful lot of fuel, which would massively increase the craft's weight.When an orbiting craft such as the space shuttle is returning to Earth, is there some reason it has to travel through Earth's atomosphere so fast, generating all the potentially dangerous friction and heat? Isn't there some way (reverse thrust or something) that it could follow a proper trajectory at a slower speed?
When an orbiting craft such as the space shuttle is returning to Earth, is there some reason it has to travel through Earth's atomosphere so fast, generating all the potentially dangerous friction and heat? Isn't there some way (reverse thrust or something) that it could follow a proper trajectory at a slower speed?
By all means, explain radiometric decay using only electric currents.
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