Question:
What causes amps to pickup radio signals?
Answer:
Originally Posted by demon_hunter What causes amps to pickup radio signals?
Filtering out and to a specific frequency generally requires what is called a band pass filter- a capacitor and inductor in parallel, and this allows certain frequencies to be filtered through. Inside an amp, its bound to have just the right conditions sometime and somewhere to allow a frequency to be filtered and introduced into the signal. There isn't really a set reason of where and why this happens, as far as I know, though.
Can you be more specific with your question? Does that help?
Answer:
Reverb tanks act like big radio antennas sometimes. I play in a church up on a hill in downtown Seattle sometimes, and the amps' reverb tanks pick up such strong radio signals there, it's pretty crazy. Amps somehow tend to favor foreign language radio stations, I've found...
Answer:
amps pick up interference from everything if you aren't careful. (i once had a PA system picking out the spark plug fiding from a guy mowing grass a couple houses down.) basically with all that wiring sooner or later a RF freq is gonna be amped, tht00 was right on. how exactly all that happens in his sace is puzzling to me, just did band pass filters and to tune into one exact freq is suggestive of something...but i don't know what. (yet)
Answer:
different things can act like antennas...i've heard radio signal pickup being blamed on reverb tanks, poorly shielded cables, noisy pickups, noisy effects pedals and simple amp/building grounding issues.
Answer:
Basically, any length of unshielded or poorly shielded wire (a reverb tank, a guitar pickup, an instrument cable...) will act as an antenna given the right circumstances.
In the building my church rents for Sundays, the sound engineer (being generous to call this person an "engineer," but ok...) used an unbalanced cable on a 120-foot run from the mixing console to a power amp. The only way to keep "ESPN Radio" out of church for those several Sundays was to turn off half the mains (the half on that particular power amp channel). Our sound tech was working furiously at the mixing board, but you can't solve a problem at the mixing board if it happens to the signal after it's already visited and left the mixing board... Anyway, the engineer finally was able to replace the unbalanced cable with balanced cable and....viola! Back to clear sound again...
Nate
Answer:
Nice to know that a viola can solve these types of problems.
Anyway, the engineer finally was able to replace the unbalanced cable with balanced cable and....viola! Back to clear sound again...
Answer:
Originally Posted by Rainer. Nice to know that a viola can solve these types of problems.
I prefer the cello....