Thank you Mary you flatter me, and yes I am a gentleman.
The way EDACS trunking works is the control channel says "Conversation on talkgroup 02-021, go to logical channel number 2." When we program our scanners we have to make sure we have the right frequencies programmed in the right channel numbers. In my example, if LCN 02 was correctly programmed as 866.325 MHz, then the scanner would go to this frequency and we would hear the conversation. If LCN 02 was programmed as something else, the scanner would go there instead and we wouldn't hear anything.
I think Oakland chose a really elegant solution to avoid re-programming thousands of radios by just telling the trunking system to stop telling calls to go to LCN 01, 07 or 10. So if you left these frequencies programmed, it wouldn't matter because the control channel would just never tell anyone to go there (as dougr1252 said).
I suspect that when you had LCN 05 programmed, it had the control channel for Oakland's Seneca St site #2. You can listen to either Site #1 or Site #2, but not both in the same bank because each one has a different logical channel number order that needs to be programmed (don't worry about site 2 they carry the same traffic). I think that since your scanner was stopping on two control channels instead of just one, half the time you were hearing the correct voice channels (from the site 1 control channel) and the other half the time the scanner was being told to switch to channels with no voice traffic on them (by the site 2 control channel, thinking you had programmed site 2).
I'm glad to hear my post on the other list helped you get it sorted out!
Regards,
Inigo
