Timetable for CSX switch to narrowband radios released.

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Timetable for CSX switch to narrowband radios released.

Postby MNCRR9000 » Wed Sep 29, 2010 4:09 pm

Found this on the Trains.com website which has to do with CSX's transition from wideband to narrowband frequencies.

CSX wideband-to-narrowband radio changeover schedule released
Published: September 21, 2010
JACKSONVILLE, Fla. — CSX has announced its timetable for transitioning from wideband (25 KHz) to narrowband (12.5 KHz) railroad radio operation, the American Short Line & Regional Railroad Association reported. It is the first Class I railroad to furnish this information for dissemination. The Federal Communications Commission (FCC) has mandated the end of wideband two-way radio transmission for non-military purposes in the U.S. after Jan. 1, 2013. [See Technology, October 2010 TRAINS] The CSX timetable presently calls for the changeover to be completed entirely in 2011.

CSX will transition by operating division, as follows:

April 2011: Atlanta, Florence, Jacksonville, and Nashville Divisions

June 2011: Great Lakes, Huntington, and Louisville Divisions

September 2011: Albany, Baltimore, and Chicago Divisions

The action will have a cascading effect on other railroads. For example, a short line or regional railroad connecting with CSX will need to match the changeover schedule if it interchanges cars or uses CSX trackage rights. While connecting railroads may want to transition their entire railroad at that time, they may have to temporarily maintain two radio systems if they connect with another Class I that has not yet changed from wide to narrowband.


http://trn.trains.com/Railroad%20News/N ... eased.aspx
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Re: Timetable for CSX switch to narrowband radios released.

Postby kitn1mcc » Tue Nov 23, 2010 7:55 pm

the new story i heard is that all new system may need to be NXDN
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Re: Timetable for CSX switch to narrowband radios released.

Postby Grump » Sat Dec 04, 2010 12:04 pm

Thats what I heard too. Its not officially confirmed, but it looks like NXDN will be the digital system especially due to the fact that the railroads are grabbing up Kenwoods and Icoms...
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Re: Timetable for CSX switch to narrowband radios released.

Postby DutchRailnut » Sat Dec 04, 2010 12:52 pm

again if CSX is going digital how do they guarantee interchange ready locomotives ??????
The railroad band is not supose to go digital, unless the Federal government mandates it and then they will hang on replacing 16000 radio's nation wide.
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Re: Timetable for CSX switch to narrowband radios released.

Postby Ken W2KB » Sun Dec 05, 2010 9:34 am

DutchRailnut wrote:again if CSX is going digital how do they guarantee interchange ready locomotives ??????
The railroad band is not supose to go digital, unless the Federal government mandates it and then they will hang on replacing 16000 radio's nation wide.


Many of the technical specification I have seen for newer radios state they operate in both conventional FM mode (wide and narrow) and digital. So interchange would not be an issue, as they are multi-mode capable.
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Re: Timetable for CSX switch to narrowband radios released.

Postby kitn1mcc » Sun Dec 05, 2010 7:38 pm

i am friends with one of the techs out of harmon shops the AAR frequency corrordinator is not accepting any non NXDN aplications. and MN does not plan on going to NXDN and that mn has a bunch of non railraod frequencies now
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Re: Timetable for CSX switch to narrowband radios released.

Postby MNCRR9000 » Sun Dec 05, 2010 8:17 pm

Thats interesting that MNRR does not plain on going to NXDN. I noticed in a bunch of their FCC licenses that they have added some emission desginators which include 20K0F3E, 11K2F3E,4K00F1E. I found it interesting that 4K00F1E is the designator for NXDN. Did they just add this so that down the road in the future they are ready for the switchover.

On a different note what is MNRR using the non-railroad frequencies for??
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Re: Timetable for CSX switch to narrowband radios released.

Postby kitn1mcc » Sun Dec 05, 2010 8:24 pm

for non rail actvities
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Re: Timetable for CSX switch to narrowband radios released.

Postby Ken W2KB » Thu Dec 16, 2010 1:03 pm

kitn1mcc wrote:i am friends with one of the techs out of harmon shops the AAR frequency corrordinator is not accepting any non NXDN aplications. and MN does not plan on going to NXDN and that mn has a bunch of non railraod frequencies now


Does the AAR freq coordinator handle all requests, from all shortlines, etc.?

Some good info from the coordinator here: http://www.ttci.aar.com/migration.php
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Re: Timetable for CSX switch to narrowband radios released.

Postby kitn1mcc » Thu Dec 16, 2010 7:23 pm

thats the part i dont know info i am getting is from 2 sets of freinds one works for MBCR the other MNCR the MBCR are big fans of NXDN so who know motorola as of now does not make any NXDN stuff
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Re: Timetable for CSX switch to narrowband radios released.

Postby Grump » Sun Dec 26, 2010 1:24 am

kitn1mcc wrote:thats the part i dont know info i am getting is from 2 sets of freinds one works for MBCR the other MNCR the MBCR are big fans of NXDN so who know motorola as of now does not make any NXDN stuff


Motorola has their own system, MOTOTRBO.
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Re: Timetable for CSX switch to narrowband radios released.

Postby Ken W2KB » Sun Dec 26, 2010 2:44 pm

Grump wrote:
kitn1mcc wrote:thats the part i dont know info i am getting is from 2 sets of freinds one works for MBCR the other MNCR the MBCR are big fans of NXDN so who know motorola as of now does not make any NXDN stuff


Motorola has their own system, MOTOTRBO.


And Motorola admits that it is an interim solution, good for 5 to 7 year, it does not appear to be very narrow band (6.25kHz) capable. http://mototrbo.motorola.com/frequently ... questions/ It does not appear to be compatible with NXDN which is offered by several other manufacturers. Question, is MotoTRBO the Betamax and NXDN the VHS of technologies?
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Re: Timetable for CSX switch to narrowband radios released.

Postby kitn1mcc » Sun Dec 26, 2010 8:35 pm

NXDN is a one user per channel Mototrbo is TDMA 2 conversations can go on on one frequency at a time
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