Strange behavior

[garys]

I have several EDACS systems programmed into my 396, even though I don't live within range of any of them and so normally don't hear them. Tonight I had the radio on and one of the systems was enabled. Normally the scanner will quickly scan through that system and not finding a control channel will continue on it's way. Tonight, it stopped on the system and indicated that it was scanning the IDs.

I thought that this was strange and took a quick look at the FCC database. There is a Motorola system using one of the same frequencies that is much closer to me.

Putting the scanner into HOLD mode, I dialed to the frequency and listened. It sounded like a Motorola control channel. It is listed as a control channel for the Motorola system.

It doesn't really make sense to me that the scanner, which is set to EDACS Wide for that system, should "see" the Motorola data stream and indicate that it's ID scanning.

I rechecked the settings and it's correctly set to EDACS Wide for that system.

Anyone else experience this?

Gary

 

[Voyager]

I have several EDACS systems programmed into my 396, even though I don't live within range of any of them and so normally don't hear them. Tonight I had the radio on and one of the systems was enabled. Normally the scanner will quickly scan through that system and not finding a control channel will continue on it's way. Tonight, it stopped on the system and indicated that it was scanning the IDs.

I thought that this was strange and took a quick look at the FCC database. There is a Motorola system using one of the same frequencies that is much closer to me.

Putting the scanner into HOLD mode, I dialed to the frequency and listened. It sounded like a Motorola control channel. It is listed as a control channel for the Motorola system.

It doesn't really make sense to me that the scanner, which is set to EDACS Wide for that system, should "see" the Motorola data stream and indicate that it's ID scanning.

It probably doesn't matter. It is seeing data and has to evaluate that data. It doesn't know it's not EDACS data until it tries to decode it, so the stopping is to be expected.

As for it actually trunking, that is an odd one. Are you SURE it's actually trunking and not just sitting there trying to evaluate the control channel data (which it cannot do) and just displaying ID SCAN? IOW, did you hear any IDs? I could see how it could display ID SCAN while trying to get valid data, although something like "Finding control channel" would be more appropriate.

Joe M.

 

[garys]

You're probably right. Looking at the scanner a bit more closely I noticed that when it finds a valid control channel it displays the control channel frequency and the Group numbers for the system. When the data stream doesn't match the configuration settings, it doesn't do that, which is what happens in this case.

Not so strange after all.

Gary