Talk groups and sites

[JBones13]

I'm new to monitoring the LWIN system and recently bought a WS1040 digital scanner. I have noticed in the last couple days I don't hear a certain talk group during the day and will hear it in the evening. For example sometimes I won't hear Beauregard SO during the day but will hear it in the evening. I have all the system control channels programmed as well as the towers near me in LC ( Calcasieu )

 

[doctordialtone]

I have noticed in the last couple days I don't hear a certain talk group during the day and will hear it in the evening.

Didn't you like the answer you got here?
system channels

You will only hear traffic from a site that has at least one radio affiliated with it.

 

[u2brent]

Sounds like the unit/TG you're hearing in the evening is (affiliated) because the radio is near the site your monitoring at that time and not during the day.. As has been previously explained..
If no subscriber radios are affiliated to the site; Then the site is quiet despite neighboring sites carrying traffic at the same time. This method saves system resouces..
The old..
If a tree falls in the woods and nobody's there, does it make a sound?
analogy.

In this case the 'nobody' is a system users radio
and the 'falling tree' is a voice call
in the 'woods' or the sites coverage area..

Maybe the unit you hear in the evening is driving from/to their home/work the same time each day, so you hear them during that time that the user remains on the site.. until they move on to another site.. or turns the radio off..