Interference issues

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wtp

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some on here have said that was probably their cause of interference.
they get a lot less interference at night off course.
and the earlier squelch question was that if you trip the squelch the signal bars go all the way up on some radios.
 
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mmckenna

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Tracking down interference like this can be a challenge. To do it right takes experience and the right tools. It's easy to get frustrated, and it's also difficult for us to help you out remotely since this can be complex stuff to try and explain online.


So I think this is what has been covered:

Pro 197 scanner with stock antenna.
You get 'full bars" interference on VHF.
You've shut off all the circuit breakers in your home and the noise is still there.
No clear offender that may be causing this.

When you shut off the circuit breakers in your home, was there any networking or cable TV stuff running on a UPS?

How close is your home to your neighbors? Entirely possible they have something that is causing the noise.

Solar panels, LED lights, lots of consumer electronics can cause this. Your home does not have an invisible forcefield that will protect you from noise coming from a neighbors home.

Cable TV systems can leak, but that tends to result in interference on specific slices of the bands, not wideband-across the spectrum stuff.

Didn't you have an external antenna installed on your home? Did you try hooking this scanner up to that antenna?
 

SA_tx_88116

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Cibolo, Texas
Tracking down interference like this can be a challenge. To do it right takes experience and the right tools. It's easy to get frustrated, and it's also difficult for us to help you out remotely since this can be complex stuff to try and explain online.


So I think this is what has been covered:

Pro 197 scanner with stock antenna.
You get 'full bars" interference on VHF.
You've shut off all the circuit breakers in your home and the noise is still there.
No clear offender that may be causing this.

When you shut off the circuit breakers in your home, was there any networking or cable TV stuff running on a UPS?

How close is your home to your neighbors? Entirely possible they have something that is causing the noise.

Solar panels, LED lights, lots of consumer electronics can cause this. Your home does not have an invisible forcefield that will protect you from noise coming from a neighbors home.

Cable TV systems can leak, but that tends to result in interference on specific slices of the bands, not wideband-across the spectrum stuff.

Didn't you have an external antenna installed on your home? Did you try hooking this scanner up to that antenna?
I didn’t go to that extent of turning everything off I just shut down computers turned off devices and turned the (cable) tv off and my house is like 3 yards away from the neighbors. And I have no external antenna
 

mmckenna

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I didn’t go to that extent of turning everything off I just shut down computers turned off devices and turned the (cable) tv off and my house is like 3 yards away from the neighbors. And I have no external antenna

You might need to physically turn off —all— the circuit breakers and see if the noise goes away. If it does, turn them back on one at a time until the noise returns, then figure out which device on that circuit is causing the noise.

3 yards/9 feet is close enough that it would be fairly easy to pick up noise from your neighbors.

Or, as others have pointed out, FM broadcast stations can get you.
 
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