Determining the LCNs for an EDACS system?

[jkm]

Hello to all,

I was recently in the Albany, NY area and I found an abundance of EDACS control channels on the bands, none of which were in the RadioReference database (there were also several Motorola systems not in RadioReference as well). I also ran across some EDACS voice channels as well. However, I do not know how to determine the LCNs for the voice channels so that I could make use of them in conjunction with the control channel.
I know that with most Motorola system, just monitoring the control channel allows my scanner to monitor all activity on the system, I don't need to be concerned with the actual voice channels. With LTR systems, the repeater ID can be found by monitoring the channel for either regular transmissions or by just waiting once every 10 seconds for the repeater ID to come across and after some monitoring, specific talk groups show up on a common set of repeaters. It's not perfect, but it can be figured out for the most part.
So my question is, is there a methodical way to figure out the LCN for an EDACS voice channel based on information that is transmitted on either the voice channel or the control channel, or is it just a guessing game to figure this out.

Any help would be greatly appreciated!

Thanks in advance!

Justin/W1IX

 

[pro92b]

Whatever you heard is probably fully listed at www.nf2g.com.

I've seen a few tedious methods on the web for determining Edacs LCN but don't use any of them. Etrunk or Ed do the job far more easily.

 

[morfis]

Does etrunk require similar setup file to mtrunker?
I'd want to try it with an Optocom initially.

 

[DaveH]

Hello to all,


So my question is, is there a methodical way to figure out the LCN for an EDACS voice channel based on information that is transmitted on either the voice channel or the control channel, or is it just a guessing game to figure this out.

Any help would be greatly appreciated!

Thanks in advance!

Justin/W1IX

Justin,

Using ETRUNK along with a conventional scanner, once you have found all the
voice channels you think belong to a particular control channel, is one of the
best ways. The particulars are somewhere in the archives here, check first.

If you have a PRO-92 or 2067 around, this can be helpful. This method is
also in the archives. If you can't find it, I'll search out my description. Basically,
the 92/2067 displays the active TG and LCN if you sit on the control channel.
If there is only one user at the time, it is much easier than busy-time. One
cycle through the LCN's and you can figure out the system.

Dave