Grinding Noise ?

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ajason

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Can anyone identify this noise?

Scanner Noise - YouTube

While scanning local PD channels, this noise appears on various freqs. This is something new -- not heard in 2 years or so of scanning.

Thanks,

AJ
 

FPOWLD

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Noise

If you are using a 800 digital system, the sound appears to be from a (CC) control channel. Check the frequency and see if it is a control frequency.
 

hiegtx

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Can anyone identify this noise?

Scanner Noise - YouTube

While scanning local PD channels, this noise appears on various freqs. This is something new -- not heard in 2 years or so of scanning.

Thanks,

AJ
AJ,
Sounds like a control channel of some kind. What system or agency are you getting this on? City & state?

Check out the various sample sounds on this site.
 

ajason

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AJ,
Sounds like a control channel of some kind. What system or agency are you getting this on? City & state?

Check out the various sample sounds on this site.
I've been told that it is a control signal for an Ericson Edacs trunking system. This appears on several channels associated with Richmond, CA police and fire dispatch. (02-022 Law Tac is one). Comes and goes.

The strange thing is that these are the same channels I've been scanning (Home Patrol) for two years or so and this control signal has never appeared before.

Thanks,

AJ
 

kb2vxa

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Nothing strange about it, there is more than one control channel on the system and they can change from time to time for various technical reasons all their own.
 
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