[TrunkCom] Control Frequency Only Mode

[bearcat]

The channel no. on Motorola are calculated in the control channel data
based on the base freq of the system. I guess the best way to explain
it.....

The Mot system determines the freq based on a base freq and the channel
no. assigned to the freq.  The freqs are assigned a designated ch # like
381 relates to a specific freq.  So the freq and Ch # are always the
same Ch 381 in Ohio is ch 381 in California.  It is a predetermined
system used on all Motorola systems, excluding the new P25 systems.
Remember P25 is an industry standard it is not Motorola 

The LTR and EDACS control channel data just says go to ch 1 or 13 or 9
it does not really care what freq would be there it just goes to the
Logical Channel No. not freq. LCNs # can contain any freq that is put
there, there is not CH# to Freq relationship  If you changed the freq
for LCN#1 on an edacs repeater the control channel would still go to LCN
#1 because it does not handle any freq data.  LTR do not have a single
control channel, they have the LCN data on all freqs in the system, but
once again they are not related at all to freq.

The new EFJohnson IP25 system is a mix it uses a single control channel
but directs units to a freq through ch. No. which are defined Just for
that system

Example
System A          System B
CH1 856.2125	CH1 856.4125
CH2 857.2125	CH2 857.4125

This is why you can have Control Channel only programming on your
scanner for Motorola and not LTR or EDACS.

You get the idea

Hopefully someone with a better techical knowledge of the system will
respond.  The concept of the email is correct I just do not maybe know
all of the tech jargon

Rich



So then why don't we need the L.C.N.s or Channel
Numbers for Motorola but we need them for EDACS and
LTR?