EOT-Device/ FRED transmissions

[Liverdog]

How often does the End-of-Train Device transmit? Is it continuous and/or how does it become active? I see them attached but can never seem to hear the telemetry. Is it audible data 'hash'? I've been listening on all standard rail frequencies/channels, with priority on 452.9375/457.9375 MHz.

 

[wrr20891]

This link to a story in Trains Magazine says they xmit about every 40 seconds, unless it detects a change in status. Then it xmits immediately.

http://trains.com/trn/default.aspx?c=a&id=220

 

[Liverdog]

Cool... The article also says that some ETD's are just "dumb" devices that only start to flash when it gets dark out... ...No telemetry, I'm wondering if that's the issue.

Thanks for the link.

 

[tactcom42]

useing atcs program you can also decode the eot.shows light on or off.brake pressure.in motion or stopped.nice the same guy had a standalone little program also called eot decoder.use it here for northfork southern.

 

[BigC801]

what railroad are u watching.

 

[Liverdog]

wbigcount, if you're asking me, then BNSF in CO. There are a couple UP switchers in the yard, but they use their cabooses, so that answers it's own question

 

[Allan_Love_Jr]

I have them programed into my Scanner all the time. They sound more like a chirp over the Radio. The DPU's are different. They have a hole new sound to them selves.

 

[HM1529]

The data bursts are brief unless something is happening.

Here's an audio sample for those who have never heard and EOT:

http://kb9ukd.com/digital/eotd.wav

 

[Allan_Love_Jr]

Eotd/fred.

The data bursts are brief unless something is happening.

Here's an audio sample for those who have never heard and EOT:

http://kb9ukd.com/digital/eotd.wav

That is a very cool sound. LOL

 

[928GTS]

ATCS,however,is not used everywhere so be sure you check the map on the ATCS mon page before you go setting up shop for ATCS.

 

[burner50]

Since there is an EOT thread, FRED saved my life today.


We got train control and went to suppression. Nothing happened. Train Control popped the PCS valve. Nothing Happened. Engineer pushed the automatic handle into emergency. Nothing Happened. I grabbed the Conductors emergency valve. Nothing happened.

No air was coming off of the rear of the train. It still showed 87psi. We flipped the rear emergency switch and came to a screeching halt.

Turns out a loose angle **** managed to get itsself closed 12 from the headend of my 135 car loaded coal train. This means I had 12 brakes trying to hold back 18,000 tons of train.

Thank god for 2 way End Of Train devices.

 

[Saint]

decoder program

How often does the End-of-Train Device transmit? Is it continuous and/or how does it become active? I see them attached but can never seem to hear the telemetry. Is it audible data 'hash'? I've been listening on all standard rail frequencies/channels, with priority on 452.9375/457.9375 MHz.

There is a decoder program out there on the web floating around that will decode the raw data bursts for you, I gave it a try last year and it worked like a charm, I think I had it connected to the discrominator tap on my scanner.
Steve

 

[burner50]

There is a decoder program out there on the web floating around that will decode the raw data bursts for you, I gave it a try last year and it worked like a charm, I think I had it connected to the discrominator tap on my scanner.
Steve

Feel free to read the thread before posting

 

[Saint]

posting

Feel free to read the thread before posting

I already read the post before posting !

 

[BigC801]

Since there is an EOT thread, FRED saved my life today.


We got train control and went to suppression. Nothing happened. Train Control popped the PCS valve. Nothing Happened. Engineer pushed the automatic handle into emergency. Nothing Happened. I grabbed the Conductors emergency valve. Nothing happened.

No air was coming off of the rear of the train. It still showed 87psi. We flipped the rear emergency switch and came to a screeching halt.

Turns out a loose angle **** managed to get itsself closed 12 from the headend of my 135 car loaded coal train. This means I had 12 brakes trying to hold back 18,000 tons of train.

Thank god for 2 way End Of Train devices.

Dam man glad the eot worked and u guys are ok, I had that happen once on a stacker coming down a big hill into kc. We ran a red and stoped about a car from the daily amtrak, they were not happy.

 

[Allan_Love_Jr]

Trash the FRED. Go back to the Caboose. Problem solved.

 

[Batt91]

AMEN, Brother!

 

[BigC801]

That might help but the only prob then would be trying to wake the conductor up to pull the red handle.

 

[WA3CSX]

Eotd

I don't know if the NS still have the same ones that they had years ago,but thiers was on vhf(161.115) I think,but it was interesting because it sounded like someone hitting redail ona phone.And yes bring back ther CABS.

 

[burner50]

no thanks... i like riding on the power.... i havent met one old head who had anything good to say about the caboose