That M5 is beautiful.Love the sound of it!!!

Over 10 years later this video still does the horn justice.

I love this M5 horn

How can anyone claim the RS5T is the king of horns when this video clearly demonstrates that its not even close?

Pretty BIG BOSS horn for a little switcher 🤣

3:12 This is arguably the best part, at least in my opinion.

Awsome horn!

This is the BEST horn show I've ever heard. Shows off the beauty of the M5, not just blasting it all at once.

I can't stop playing this video...hands down one of the BEST sounding M5s out there!!!

My favorite train horn, the magical and musical M5.

DAMN that M5 sounds perfect

I actually have that kind of horn on most of my model diesel locomotives. It sounds great on every one of them.

Cool video. I visit that railroad also.

A horn that would shush a crowd

I love how this horn's tuning sounds exactly like that of an RS-5T (but with that M-series sound) when given only partial air pressure, and slides into that M-5 chord when given full air pressure.

Best Nathan M5 I've heard

That's Swanson's Hard Work achieved.

Jesus Christ this has to be the BEST horn I've EVER heard. Would love to buy one.

You got that right! The echoes in the hills seem to bring the horn to life. I've got several videos posted that were recorded on Padre Island, TX. The horns sound ok, but are very bland without the echoes. The constant wind out on the coast doesn't help the recordings much either.

Jesus christ, that's one hell of an M5! This is why it's my favourite horn, I love this thing, I hope it is still on it today.

This gives me the chills

These horns seem so impractical yet so beautiful.

That is SWEET!

*FAINTS* I cannot describe how amazing this horn is!!! My god, I WILL look into purchasing a horn like this, this is a spectacular sounding horn. Thank you for this great video! Even the diesel looked great too!

Damm, I love that echo!

GOD that horn is so beautiful!!!!!!!!!!!!

The M5 is one of my favorite horns. This is amazing!

excellent sounding M5!

This proves me theory that old Cast Horns sound better than the new ones

A lotta horn for a little train. Love the M5

Wow this is so amazing!!! Reminds me so dearly of the Western Pacific!!!

@trainandhawksfan17 Old-cast P5s and properly tuned M5s are designed to sound the same chord, so they would sound similar!

That echoing is great! Very nice horn!

My favorite horn by far

That is one GORGOUS M5 just music!!!!!

Beautiful horn, sounds like a deep steam whistle!

Dude that's got to be the tastiest sounding m5 I've ever heard! Very ominous sounding in the distance

That sounds so awesome

With the wear it had inside I'm sure it faithfully served the railroad for quite a while before being retired. Sometime after being retired from service it ended up in a barn where it sat for many years. Thanks for the comment!

Awesome! The M-5 is my favourite diesel horn!

It has a very jazzy kind of sound to it.

Man that is one fine horn

The M5 takes some beating but of course its always in the ear of the beholder.. LOL.. This certainly is a lovely recording..

@dgblairjr42 I'm not positive what RR it came from, but it appears to have an ACL inspired paint scheme. Not sure if it was painted that way by the RR or if it was done by a collector as it was found in a barn in FL where it had been sitting for many years. Your guess is as good as mine. Thanks for the comment!

Not for sale that I know of, but they are available to rent by the night. Search for Barthell Mining Camp for more information.

No doubt one of your favorite air horns right? I sure like it!

This is godly

@sgtfhrn This horn is one of the BEST sounding horns I'v ever heard! I almost passed out behind the computer! I just hope I can get my hand on this particular model. hopefully someone out there has one for sale.

I shall have this horn on my car...along with a K5HLL!! Ahhh, this is a sound I would love to hear in heaven....along with a mile long HO scale layout!! :D

@SierraRailway Absolutely one of my favorites! Glad you enjoy it as well. Thanks for the comment.

you've got that right for sure! Best horn out there...

@mike9889 Thanks! Although, I'm probably a bit biased, I believe this to be one of the better sounding M5s out there. Glad you enjoyed the video!

Awesome!! Love the M5!!

the first time the horn blew, I thought I was listening to a steam whistle!

Ya gotta just LOVE the M5 with it's mellow sound and pitch change at full air flow... NICE!

I totally agree!!! M5 is the kings but this one has such a musical and smooth sounds one of the best if ever heard!

Absolute chills. This is the best M5 I’ve ever heard

It actually amazes me just how liberal the Americans are with the whistle. Here in Australia, as a new engine man I was taught to use the horn sparingly.

Yes, a beautiful horn! However. I'll bet that many or all of the non-railfan riders think that its merely annoying noise.

My names nathan and I can confirm this is what I sound like [=

@MultiHornguy Reminds me both of the original WP California Zephyr and of a WP GP20!!

CN would surely hate this horn!

It will be nice that they'll still making the Nathan M5 Horns for trains!

Did any passengers become deaf?

Love it!!

Just doesn't sound the same in the flatlands like here in Ohio. Only when they are blown in the hills do you get the full depth of the horn.

MMMM LOVE IT

That switcher is undeserving of having such a great horn.

Man thats a damn beautiful horn. i wish i had that on my truck

Sounds similar to trainz simulator

Rs5t:i am the king M5:whos laughing now

i want that house! is it for sale?

C# E F# A C#

Now, just imagine trying to get a lye in on a Sunday morning with that thing blowing its piece off....nah nah nah.... beautiful sound though........xx to you all

6:39 let it rip

Sounds a lot like a K5LLA.

Ex western pacific.

Nice horn..but too much wind noise..

Is that a GMD SW1200RS (Pup)?

Lineage of this horn

I'm just wondering what kinda valve the loco has ?