Ive posed this in another forum, what type or types of horn was used on the RS locomotives. WABCO E2 or Leslie A200, S2M or the S3L. Modeling the mid 50s West Shore feed back or a point in the right direction would be helpful.
I don't know the technical names/numbers of the various horns. The RS1's had two horns, both single bell. Long hood direction had a deep "moose call" sound which was pretty common on early diesels. The short hood direction had a higher note like what was found on the Alco switchers.
RS3's varied - some had the "moose call" horns, some had Hancock whistles. I don't remember for sure whether any had 3 or 5 chime horns but off the top of my head I don't believe that was the case.
Hope this helps. And I see we're both about a week away from earning our "10 Year Forum Member" badges!