I got the opportunity to look at a programming file for BNSF's new ht's and they're programming narrowband.The railroads have until January of 2013 to replace any radios that are not narrowbanded. It doesn't mean that they have to use the new narrowband frequencies just then but they have to be ready to use them. Most radios sold to the railroads in the last few years already meet this new standard. Narrowbanding is the narrowing of the gap or spread in frequencies between channels. The link below provides a graph that explains this somewhat. http://wireless.fcc.gov/services/plmrs/images/vhfband.jpg
With railroads going to more data and train control systems they will need extra frequencies to do this.
I can see it now, some of these old heads replacing their 8 channel moto HT's...In order to talk to Sioux City Yardmaster, we must dial in 175-175 into the Moto upon passing Homer Ne. for yarding instructions. Only narrowband I know of over the BNSF, but it has been reported BNSF Sioux City is testing P25 also.
Don't those nexterna's have an adjustable squlech? What is bad about them? Maybe they are using a lower quality antenna? Those firecracker antenna's arn't the best in world either. I had my car next to a locomotive once, I could hear a train getting a warrant, I was picking up both sides of the convo, while the locomotive was only hearing the dispatcher.O man i even hate that word "Nexterna" they suck bad!!!!!!!!!!