narrowband

I have attached a snippet, of the BNSF railroad grant in Northern Illinois. Can anyone tell me what 4K00F1E is? I know that many users are switching to the 11K2F3E for narrowband requirements, and 20K0F3E would be the standard currently. But what is the 4k00F1E? Is this preparation for...

A quick question on the programming software. With narrowband just around the corner, was just wondering if I am correct on this: You have a channel that you talk to your dispatch with on a regular basis and it is set to Wide at this time. You decide to change Wide to Narrow on the programming...