Horn Identity

I use this web site to identify horns on my HO diesels and to use the correct sound in the decoder to match the horn:

http://atsf.railfan.net/airhorns/

Fran Giacoma

Nathan M5 ?

Or a K5?

Scott Chatfield

Southern Motive Power Book FORM 1014

Southern put out a "Condensed List And Description of Locomotives" and in the January 1, 1980 copy on p. 86 the SW1500's and MP15DC's are shown to be equipped with "one 3 chime horn mounted on the cab with 2 chimes facing forward and one chime facing rearward."  No manufacturer is mentioned unlike other units but other units that use a three chime horn are shown as having Nathan P-142 (GP38, GP38-2, SD45, SD40, SD40-2, U33C and U23B.

Robert

Horn identified

To me it looks like either a Nathan P5 or a Nathan K5HL a side picture would help best identify it though