EDACS alternate control channel

[Jammin_Jay]

On an EDACS system. Can anyone of the channels in the trunking system, be an alternate control channel ?

I noticed on the ottawa EDACS that the c.c. has changed, numerous times, but was not listed on RR as one of the alternates.

 

[rchalupajr]

I listen ta an Edacs system in my area. It has 6 frequencies, 5 of the 6 have been used as a control channel at one time or another

 

[rdale]

It doesn't really matter for EDACS systems because you enter all LCN's the same, no matter if they are a CC or not.

 

[Thayne]

Any EDACS LCN can be a control channel, and the controller will do it automatically if need be.

I heard somwhere that MOTO CC's have to be set up in advance and can only be 3 or 4 Max.

Some have said that EDACS trunking is actually more failsafe than MOTO but I don't know the reasoning behind it--

 

[DaveH]

On an EDACS system. Can anyone of the channels in the trunking system, be an alternate control channel ?

I noticed on the ottawa EDACS that the c.c. has changed, numerous times, but was not listed on RR as one of the alternates.

On Site 1, 12 of 15 channels have been heard as CCs going back over at least
a few years. I suspect any LCN can be a CC, but it's kind of academic as EDACS
doesn't work with CC-only mode.

Dave

 

[IdleMonitor]

I've listened to the Ottawa system with Control Channel only mode. It does work. As long as you have all the correct Ctrl. Ch's in your radio

On Site 1, 12 of 15 channels have been heard as CCs going back over at least
a few years. I suspect any LCN can be a CC, but it's kind of academic as EDACS
doesn't work with CC-only mode.

Dave

 

[rdale]

I've listened to the Ottawa system with Control Channel only mode. It does work. As long as you have all the correct Ctrl. Ch's in your radio

Absolutely wrong... You can't even program an EDACS system as control channel only mode.

 

[IdleMonitor]

Ok But I know how I programmed the radio and I know what I've heard and seen. And you can program it with control channel only.
Currently I have 5 ctrl ch. in site 007 at the moment, and i've had no problems with it.

0866.1375 1
0866.3875 2
0866.6375 3
0867.3875 4
0867.8875 5

Absolutely wrong... You can't even program an EDACS system as control channel only mode.

 

[DaveH]

I've listened to the Ottawa system with Control Channel only mode. It does work. As long as you have all the correct Ctrl. Ch's in your radio

Probably the reason it works is that you still have all the LCNs programmed in,
and you may think the radio is in CC-only mode but it is not.

Try removing all LCNs except the current control channel, and see if it
still works, and let us know.

Dave

 

[Jammin_Jay]

I never thought you could program an EDACS as CC only mode. If you have 5 of the alternates programmed in, then each one of those 5 is an LCN. I just wondered because if someone was to come across an unknown EDACS site, somwhere else then Ottawa, and all the frequencies in logical order was not available to them, then its not possible to extract them from a CC only mode. Also out of curiousity, is an EDACS site expandable to add more frequencies as LCN's to the ones that already exist, if radio traffic warrants it. I understand that it can take up to 24 channels max.

 

[rdale]

You cannot program CC-only for EDACS.

Yes, they can be expanded.

 

[exkalibur]

They can be expanded, however adding a single LCN means *every* system radio will need to be re-programmed, so this isn't done very often.

And no, CC only is impossible on an EDACS system.

 

[davidmc36]

Ok But I know how I programmed the radio and I know what I've heard and seen. And you can program it with control channel only.
Currently I have 5 ctrl ch. in site 007 at the moment, and i've had no problems with it.

0866.1375 1
0866.3875 2
0866.6375 3
0867.3875 4
0867.8875 5

If those are the only frequencies that you have in that system then you are missing parts of converstaions, you just don't realize it. You need all ten programmed in and in the right order.

 

[davidmc36]

I understand that it can take up to 24 channels max.

Just a note of interest, I did read a document that was linked from the WIKI that said 25 channels MAX.

 

[DaveH]

Ok But I know how I programmed the radio and I know what I've heard and seen. And you can program it with control channel only.
Currently I have 5 ctrl ch. in site 007 at the moment, and i've had no problems with it.

0866.1375 1
0866.3875 2
0866.6375 3
0867.3875 4
0867.8875 5

With this setup you'll be receiving about 4/9 of the total traffic:

- for messages carried by only the four voice LCNs programmed, operation
would appear "normal".
-for messages carried on the five voice LCNs not programmed, you'll hear
nothing, which may seem "normal" but you'll be none the wiser, unless you
were scanning all voice channels on another scanner (not a bad test),
or trunking with all LCNs programmed.
-for messages carried by a mix of LCNs, you should hear fragmented
conversations. Listen carefully, that is your clue.

Dave

 

[IdleMonitor]

Well, I'll try this next time I'm in Ottawa. Haven't been able to hear OFD from my location since getting the 396T due to sensitivity of the radio so...

I just figured since it was a radio that did Ctrl. Ch. only scanning that everything was working properly.

Always learning something new.

With this setup you'll be receiving about 4/9 of the total traffic:

- for messages carried by only the four voice LCNs programmed, operation
would appear "normal".
-for messages carried on the five voice LCNs not programmed, you'll hear
nothing, which may seem "normal" but you'll be none the wiser, unless you
were scanning all voice channels on another scanner (not a bad test),
or trunking with all LCNs programmed.
-for messages carried by a mix of LCNs, you should hear fragmented
conversations. Listen carefully, that is your clue.

Dave

 

[davidmc36]

I just figured since it was a radio that did Ctrl. Ch. only scanning that everything was working properly.

If you study the appropriate section of the manual you will see that CC Only works for Motorola but not EDACS.