44.58 MHz

W8UU

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Wellston OH
I see this almost every day in the Skip forum:

44.58 CSQ BNSF Hy-Rail limits compliance system

What is it? Where does it operate from? I've never received it here so I'm at a loss.

Can anyone give a brief overview of what this is and how it works?
 

marvinsuggs

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Richmond, TX
I see this almost every day in the Skip forum:



What is it? Where does it operate from? I've never received it here so I'm at a loss.

Can anyone give a brief overview of what this is and how it works?
It's telemetry sent from Burlington Northen Santa Fe Hy-Rail vehicles (maintenance tracks that can ride the rails) to trains showing their speed, location and direction. To reduce the chance of trains colliding with these vehicles. I'm no expert so maybe someone else can chime in.
 

chrismol1

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its an authorized limits compliance/alerter system for hy-rail vehicles so if they go astray it doesn't go unaware. Being much smaller and greater mobility than trains its a layer of safety beyond verbal
 
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nd5y

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Dec 19, 2002
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Wichita Falls, TX
It's not just vehicles. They have 44.58 base stations all along the tracks. Here is one license near me.
Its easier to hear the extremely short data bursts if you set the receiver to AM and open the squelch.
If you don't have a good outdoor antenna that works on 44 MHz you probably won't be able to hear anything.
 

chrismol1

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yea they need those receiving stations so the data can go back to the dispatcher, it wouldn't be much of a safety system if only 1 side knew anything.
 

wv2vvl

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May 28, 2012
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Bucks County, PA
BNSFRR m/s noise burst reception in suburban Philadelphia
==============================================
44.58 FM frequent noise bursts Diamond Superdiscone at 610' AMSL

Rx: ICOM R8600
0115 UTC

Not exactly skip but definite S9Q5 reception. Will look for app to decode these. GPS vehicle location data.

73

Jack
W2INF
 

wv2vvl

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May 28, 2012
Messages
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Location
Bucks County, PA
BNSFRR m/s noise burst reception in suburban Philadelphia
==============================================
44.58 FM frequent noise bursts Diamond Superdiscone at 610' AMSL

Rx: ICOM R8600
0115 UTC

Not exactly skip but definite S9Q5 reception. Will look for app to decode these. GPS vehicle location data.

73

Jack
W2INF
It seems that skip propagation is involved in my reception as there have been no bursts in the last 30-60 minutes.

73

Jack
 

W8UU

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Location
Wellston OH
Probably not too many BNSF HyRail crews each of the Mississippi.


I've been listening for weeks here in southeast Ohio and I've never heard anything.
I'm less than a mile from the local train route and the VHF railroad channels can be kind of busy.
 

wv2vvl

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Location
Bucks County, PA
Hi there. I'm in suburban Phila & picked up frequent bursts earlier on 44.58 but nothing in the last 90 minutes. Reception depends on a lot of factors, like meteor activity. I'm using a Superdiscone & an ICOM R8600.

Jack
W2INF
 

W8UU

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Wellston OH
We have a storm brewing and 44.58 lit up with data bursts. Not sure where they're coming from but I'm glad I finally got to hear this. How much power do these automated data radios run?
 
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nd5y

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Dec 19, 2002
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Wichita Falls, TX
How much power do these automated data radios run?
I looked up several in my area and the ERP on the licenses varied from 85 to 195 watts. Most were 100. They probably use 100 W radios. I know they have different types of base antennas.
I don't know what type of radio the trains use.
 

wv2vvl

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May 28, 2012
Messages
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Location
Bucks County, PA
We have a storm brewing and 44.58 lit up with data bursts. Not sure where they're coming from but I'm glad I finally got to hear this. How much power do these automated data radios run?
100W. For this kind of license info check the FCC General Menu for this freq in a state like CA where they operate.

Jack
 
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