Google Images of SW1000’s show both prototypes and models, including the Athearn one. On all of the pictures, the horn is on the long-hood end of the cab, just below the roof.
My undec SW1000 came with a horn. I can only surmise that yours wasn’t included for some reason or it was misplaced. It’s quite small and is easy to lose.
"You e-mailed us to ask about a “missing” air horn in your undecorated SW1000 model.
We do not include an air horn with our undecorated models, as we cannot foresee which air horn will be required for each railroad in which an undecorated model could be painted. It is, therefore, up to the modeler to determine which air horn is appropriate, as well as where it is to be applied, and supply it themselves. There are many after-market air horns available (from Detail Associates, Details West, etc.) that are suitable for this model.
Thank you for you inquiry. We hope you find your SW1000 model to be enjoyable to build."
Well, I guess I should tip my engineer’s cap to Athearn for a quick response, and to you for caring enough to bring this up.
Now, are you going to put sound in the engine? If so, you’ll have to decide on the right prototype horn, and then make sure the decoder you choose supports that particular sound.
I’ll have to admit it. When I configure a sound decoder, I listen to the horns and pick the one I like the best. So far, I haven’t taken the time to study the horn that’s on the engine and match the sound file to the model’s horn. Neither have I shopped around for an after-market horn that matches the sound file most pleasing to my ear. But, you’ve certainly made me thing about it. Thanks for the thread.
No sound or decoder --I have a two oval ( 22"&18") with a cross over and 2 sidings off the 18–Very simple layout
I have 2 MRC Sound Powers and they have steam and diesel sounds built in --I like the diesel horns and steamer whistles they have
And since I have my own RR I really don’t worry about prototyping --the ME&O engines are what I want them to be but they have to have whistle/steamers and horns/diesels