I can't help with exact answers but am also interested in the topic. I had formerly found the Soundtraxx document interesting for an overview. Note that it includes a not complete list of horn types by RR that might be helpful if you knew the timeframe of the locos and specific horn types (ignoring upgrades that might occur).
http://www.soundtraxx.com/choose/choose4.php
I've found some related info on Nathans and less useful info on Leslies, which your BN and prior RRs might have favored. I imagine you could find better info. All this might help narrow down which LokSound option to favor. I am pretty loose about that, often trying each of the horns and picking one (for starters) that sounds good with my speaker and might be in the range basis era of the prototype.
https://en.wikipedia.org/wiki/Nathan_Manufacturing
https://en.wikipedia.org/wiki/Train_horn
http://locomotivehorns.info/leslie/tyfon.shtml
Here's a wild idea, a long shot. Maybe someone at BNSF would know the answer, since not terribly old locos, if you could get to the right person (in maintenance, engineering, etc). Maybe call one of the BNSF stores and ask who in the company you might talk with to get connected. Maybe worth a couple of calls.
https://www.bnsfstore.com/default.aspx
Another idea: you might inquire of Matt Hermann at ESu LokSound (Pennsylvania) as he might know which of the 15 are typical for the loco type, to at least narrow it down. They have an email on the website or you might ask at the Yahoo LokSound user group.
Paul
Modeling HO with a transition era UP bent
[quote user="BRAKIE"]
ale82 They both have 15 horn types to choose.Anybody knows which would be the correct prototypical choices ?
Depending on if the engine in question is which merger road did it come from (GN,NP,SP&S CB&Q) and what style horn they used?
ale82They both have 15 horn types to choose.Anybody knows which would be the correct prototypical choices ?
Larry
Conductor.
Summerset Ry.
"Stay Alert, Don't get hurt Safety First!"
Welcome to the forums.
If no one comes up with the answer for you, try Googling the road name and loco type, then horn. I have done this for several of my locos. Also, you can check with the roads historical site.
Good luck,
Richard
Hi everybody.Just bought a couple of Burlington Northern locomotives with Loksound select.a Ge U25B and a Alco C636.
They both have 15 horn types to choose.Anybody knows which would be the correct prototypical choices ?
Thanks