Low band Switch

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mike nowakowski
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Low band Switch

Unread post by mike nowakowski »

Thats what i think whats it called. But what are the new frequencies that the railroad is going to be operating at comming up soon.
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cnw8835
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Re: Low band Switch

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See here... viewtopic.php?f=15&t=16363&start=0&hilit=Narrow+band
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SD80MAC
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Re: Low band Switch

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IIRC CSX went to narrow band in April.
"Remember, 4 mph is a couple, 5's a collision!"
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mike nowakowski
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Re: Low band Switch

Unread post by mike nowakowski »

What are all the old railroad frequencies?

And what are all the new ones going to be?
Love all class 1 railroads in USA and Canada, and short lines in michigan

Please, Check out my youtube acount its http://www.youtube.com/MTNRailProductions

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SD80MAC
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Re: Low band Switch

Unread post by SD80MAC »

mike nowakowski wrote:What are all the old railroad frequencies?

And what are all the new ones going to be?
Frequencies are the same, we can still hear them on our scanners, the transmitions just come in a lot quiter. It's when they go to digital is when railfan's will be screwed.
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mike nowakowski
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Re: Low band Switch

Unread post by mike nowakowski »

so what you are saying is the railroads arent going low band at a lower frequency they are going digital?
Love all class 1 railroads in USA and Canada, and short lines in michigan

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amtrak1007
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Re: Low band Switch

Unread post by amtrak1007 »

mike nowakowski wrote:so what you are saying is the railroads arent going low band at a lower frequency they are going digital?
Lets look at this using the CSXT road CH. 0808 or 160.23mhz

Instead of using 25khz of spectrum for each channel (160.2175 to160.2425) , the initial plan is to narrow that useage down to 12khz per ch. Basically what that step does, is it takes the regular analog signal, and only uses half as much space (160.22375 to 160.23625) When they do go digital, (when a standard is adopted right now Motorola, kenwood, icom etc all have their own specs and none play nice with another) the carrier frequency (162.230mhz per this example) will still be the same, how ever the sound waves will be digital, (160.2275 to 160.2331).

I don't think CSX has gone narrow yet, or at least my perception of their audio strength is the exact same as it was wide band modulation...
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