Codan 2110 Reference Manual page 138

The Network List
Channel/Mode
The Channel/Mode setting applies to all networks. This setting contains the channels and
modes used by the network. The modes from which you can select are those specified for
the channel in the Channel List.
Before you add channel/modes to a network, consider the following:
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While there is no limit to the number of channels you can add to a network, the
transceiver will only scan a maximum of 100 channels at a time. If the total number
of channels in all the networks you are scanning exceeds 100, only 100 of the
channels will be scanned.
If several modes can be used with one channel and you want the channel to be
scanned using each mode, create several entries for the channel, one for each mode.
For example, if you want to scan 'Chan 1' using modes USB and LSB, create the
entries 'Chan 1/USB' and 'Chan 1/LSB'.
An easy way to add and maintain channels in a network is to use groups of channels.
Only the group name is stored in the Network List so you can add and delete
channels from the group in the Channel List without having to update the Network
List each time. When the network is scanned the transceiver scans whichever
channels are in the group at the time. For more information see
and ungrouping entries.
When you add a group of channels to a network you need to select a mode for the
group. The mode should be an allowed mode for all the channels in the group as the
transceiver will only scan the channels for which the mode is allowed.
If the mode is not an allowed mode for one or more channels, these channels are
listed in a message that is displayed when you switch scanning on. In this situation
these channels will not be scanned. To ensure that they are scanned, add them to the
network individually.
A network cannot be scanned unless there are channel/modes in it. However, you
can still use the network to make calls. The channel/modes from which you can
select are all those in the Channel List.
If you rename a channel in the Channel List and that channel is used in a network,
you must delete the channel from the network and if necessary add the new channel
name.
If you make frequent and significant changes to the channels and networks in the
transceiver you may want to use NSP to maintain this information.
page 103, Grouping
2110 SSB Transceiver Reference Manual