SPERT20906
Member
On 160-230 I am hearing some weird tones & was wondering what this means, I live in the WHEATON MARYLAND area of the NORTH EAST line.
Thanks.
Bob
Thanks.
Bob
ac7xc said:They could be end of train beacons or other type of telemeter data transmitted for railroad procedures.
Rayjk110 said:The only even remote "Beacon" is the EOT device placed on the rear coupler - I forget the exact frequency, it's 467.xxxx something-or-other.
If you're hearing wierd noises, it could be the result of a cheap/old scanner that can't handle intermod/images.
califzeph said:I hear that all the time, sorta sounds like a computer modem. I live across the street from the Roseville train yard, and often have my back up scanner on Signal Stalker. I think this yard uses remote control switching locomotives, so it may have something to do with that.
Rayjk110 said:They usually call the dispatcher from portables/mobiles with a DTMF KeyPad, and what that does is it pages the dispatcher.
IE, around here when a train needs to contact the dispatcher, say, amtrak, they will dial 057 on their portables. This is recognized by the dispatch radio at the local tower and it sends back a 900hz tone or some 4-5 second tone. You may be just hearing the tone because sometimes it's dialed up from portables, which you cannot always hear.
Rayjk110 said:They usually call the dispatcher from portables/mobiles with a DTMF KeyPad, and what that does is it pages the dispatcher.
IE, around here when a train needs to contact the dispatcher, say, amtrak, they will dial 057 on their portables. This is recognized by the dispatch radio at the local tower and it sends back a 900hz tone or some 4-5 second tone. You may be just hearing the tone because sometimes it's dialed up from portables, which you cannot always hear.
Rayjk110 said:Computers? What?
I know conductors on Amtrak have laptops for business use that I frequently see, but that's all I know of.
On the new control stand and even the desk style control stand (like on the dash-9), some railroads have adopted the use of 2 LCD Screens in place of the actual control needles, sometimes even 3 LCD's - but of all the cabs I've ever been in, I've never seen a computer implemented anywhere.
That must be what they were talking about.
Also, I remember reading somewhere that 1 road had used a camera in the front, but I think it only activated when the train went into emergency braking and then recorded into the locomotive's black box.
That may be true, & safe as well.
Typically the dispatcher can tell where a train is at based on the sensors of signals, and the little gray rectangles (about 3" by 6") that are on the side of cars and loco's that get scanned at certain points, primarily where shippers can tell where their car is at, but can be used for tracking purposes as well. I have a couple here that I've found trackside.
Rayjk110 said:Probably is. I know they're placed every 15-20 miles or so. Basically so the dispatcher can tell what cars/how many are on the train, and what loco. All the square really carries is the Road Name and Road Number - and I think tracking is just cross referenced to which car it was put in.
Rayjk110 said:They usually call the dispatcher from portables/mobiles with a DTMF KeyPad, and what that does is it pages the dispatcher.
IE, around here when a train needs to contact the dispatcher, say, amtrak, they will dial 057 on their portables. This is recognized by the dispatch radio at the local tower and it sends back a 900hz tone or some 4-5 second tone. You may be just hearing the tone because sometimes it's dialed up from portables, which you cannot always hear.
gcgrotz said:160.230 is the CSX road freq here in central VA. The tone referred to by Rayjk110 comes when they call a dispatcher using a dtmf tone and the base acknowledges with what sounds like a telephone ringing tone. The key to this would be if you hear a dispatcher come on shortly after the tone.
I heard this this moring when I was leaving to go shopping
Most of the EOTs are in UHF but NS used a VHF freq, something like 160.115 (don't quote me on that) but I had it in the scanner a long time and have never heard anything on it and LOTS of trains pass through here (and some even stop) on NS every day.
I can always set my railroad scanner to scan or just putt 160.115 in to find out.
Maybe you could record what you are hearing and post it?