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Author
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Topic: Amplifier Modifications For Coyote Howling With Open Reed Calls
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 11, 2010 10:24 AM
Many predator callers are looking for ways to locate coyotes by howling with open reed calls or tone boards. I have come up with a way to amplify these howling sounds with a minimal cost. The amplifiers can be made from empty plastic pop bottles. You will need to cut off the bottom end of these bottles, remove the labels, and after your testing you can paint the bottle with a flat black spray paint to cut down on glare.
The 20 ounce bottles shown above work great, but you may also want to try the two liter bottles for more volume.
You can experiment with the length of these bottles or funnel amplifiers.
Open reed tone boards or calls with a 7/8 inch OD (outside diameter) will fit right into the end of these bottles with the cap removed. I have also bored out some Schedule 40 PVC pipe with a 11/16 inch drill bit and cut these down to a 5/8 inch length. This allows me to fit my 5/8 inch OD tone boards into these cut/drilled down sections of PVC pipe for use with these same bottles. I prefer and have used the 7/8 inch tone boards for the past 30 years with my calling, but I have also made the 5/8 inch tone boards and some callers feel these are easier to blow.
The completed amplifier on the right hand side was made from a 20 ounce Dr. Pepper bottle with its straight neck taper, but Coke and Pepsi bottles work as well.
Bottles with constricted or recessed areas to the neck of the bottle should not be used, they cause a back pressure and distort the sound of your howls.
You can also purchase small plastic funnels for $1 to $4 at your local auto or farm supply store, WalMart or K-Mart stores and these funnels can be cut and modified for your amplifiers. The large ends can be cut down to a smaller diameter to fit your desires and the small tapered end can be cut down for a snug fit of your tone boards. The funnels can be painted with more desirable flat black color.
Large funnel modified as an amplifier.
Small funnel modified as an amplifier.
Yes I have used trombone and trumpet bells as well as buffalo and cow horns for my howling. With these modified bottles and funnels you can save yourself a few dollars and have the pride of of using an amplifier that you improvised for your own use.
If you would be interested in purchasing my 7/8 and 5/8 inch Dakota Coyote Howler tone boards, I will sell you one of either size tone board shipped TYD for $6 or two for $10. Payments can be made by cash, check, money order, or PayPal. If you are interested, please reply to this thread or send me an email. You can also use these tone boards without the amplifiers for the rabbit distress and coyote kiyi’s with your predator calling.
Dakota Coyote Howler tone boards. The top gray tone board has a 5/8" OD and the lower white tone board has a 7/8" OD.
You can listen to a howl made with these tone boards by clicking on the following lone howl link.
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Paul Melching
Radical Operator Forum "You won't get past the front gate"
Member # 885
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posted October 11, 2010 10:36 AM
Now youve gone and done it! ok which do coyotes prefer Coke or Pepsi?
sorry I couldnt stop myself.
Great idea by the way.
I have an old primos howler the I aquired a long time ago. When I fist saw it I thought hey I could do this with a funnel. And yes its very loud.But it has a crappy tone board.
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Those who value security over liberty soon will have neither !
Posts: 4188 | From: The forest ! north of the dez. | Registered: Jul 2006
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Cayotaytalker
DOES NOT TEACH/SUSPECTED OKIE
Member # 1954
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posted October 11, 2010 11:48 AM
I thought this post was ajoke! The top photo of the 20oz does not look that bad.I might not like it to hang off my neck.But on the dashboard or in the front seat of the truck might be ok.Well if no one did ever think out side the box I guess we would still be in a cave.I have done some crazy stuff to make reeds from beer cans to most any kind of plastic.Mylar makes the best reeds but most plastic will work in a pinch.
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Now thats prime coyote country!
Posts: 403 | From: LasVegas Nevada | Registered: Oct 2007
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 11, 2010 03:05 PM
My SD coyotes prefer Pepsi of course??????? I modified the hot dog tone board and it howls much better now.
A smaller pop bottle cut in half should work much better on your lanyard. Save the 2 liter bottle for use from your truck. I also have a three sided small cough syrup bottle that was made from harder or thicker plastic, this would work much better on a lanyard.
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Leonard
HMFIC
Member # 2
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posted October 11, 2010 03:17 PM
The one I molded out of a gallon milk jug, a handfull of concrete and Skippy peanut butter has lasted me a long time.
(just kidding)
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32363 | From: Upland, CA | Registered: Jan 2003
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 11, 2010 04:34 PM
Leonard:
These amplifiers are much easier to fix and the open reed calls that I sent you will fit right into the bottles. The funnels have to be fitted to the calls.
Have you done any calling to try these calls yet?
[ October 11, 2010, 07:32 PM: Message edited by: SD Howler ]
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Leonard
HMFIC
Member # 2
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posted October 11, 2010 06:56 PM
Not yet Steve.
For us unfortunate urban citizens, we have to plan a safari in advance and then: BONSAI! "outta my way, pilgrims!"
I'm doing a huge financial transaction, at the moment, so my focus is on it; but I have much to do before I leave town.
Check back toward the end of the month and I will have something to tell you.
Good hunting. LB
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32363 | From: Upland, CA | Registered: Jan 2003
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 12, 2010 11:50 AM
I just found another bottle that works great as an amplifier for howling. You can use a hydrogen peroxide bottle in the 32 or 16 ounce sizes. Since the bottles are brown, painting is not required and these bottles are made with a thicker plastic which stands up better that the pop bottles. The 7/8 inch tone boards fits snuggly in the top screw end of the bottles.
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Krustyklimber
prefers the bunny hugger pronunciation: ky o tee
Member # 72
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posted October 13, 2010 10:00 PM
Oh great... more "science of sound" to wade through. ![[Roll Eyes]](rolleyes.gif)
I can't believe TA isn't all up in this! ![[Razz]](tongue.gif)
Steve,
Can you explain exactly how you are defining the word "amplifier" as it applies to this situation?
Krusty 
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Think about how stupid the average person is, then realize that half of them are stupider than that!
Posts: 1912 | From: Deep in the Blue Ridge Mountains of Virginia | Registered: Jan 2003
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Leonard
HMFIC
Member # 2
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posted October 13, 2010 10:19 PM
I think he would say the obvious, that it directs and funnels the sound in exactly the same way as a cheerleaders megaphone.
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32363 | From: Upland, CA | Registered: Jan 2003
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fgf4
unknown comic
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posted October 14, 2010 12:07 AM
Did I hear "Cheerleader"?...
![[Big Grin]](biggrin.gif)
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Krustyklimber
prefers the bunny hugger pronunciation: ky o tee
Member # 72
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posted October 14, 2010 12:34 AM
First off, I've been studying fluid dynamics all night, for mid-terms next week, and I have a head way way too full of science right now.
Leonard,
Fair enough, but just like to say "I think he'd be mistaken in saying so."
I had written a lengthy post, but I'm going to spare you, or save it for later (when and if anyone is interested in another discussion of the nature of sound).
Highlights included Bernoulli's Principle, the Law of Conservation of Energy, and Noether's Theorum. ![[Wink]](wink.gif)
Krusty
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Think about how stupid the average person is, then realize that half of them are stupider than that!
Posts: 1912 | From: Deep in the Blue Ridge Mountains of Virginia | Registered: Jan 2003
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 14, 2010 04:58 AM
Krusty:
The intent of this post was to show callers other ways of increasing the volume of sound made with a tone board. They can save the expense of buying a buffalo horn, cow horn, or a hand turned wood barrel by using various plastic bottles or funnels with their tone boards.
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Rich
2,000th post PAKMAN
Member # 112
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posted October 14, 2010 05:35 AM
Gery Blair explained the pop bottle megaphone idea to me back in the mid 1980,s.
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If you call the coyotes in close, you won't NEED a high dollar range finder.
Posts: 2854 | From: Iowa | Registered: Feb 2003
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Krustyklimber
prefers the bunny hugger pronunciation: ky o tee
Member # 72
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posted October 14, 2010 07:53 AM
I don't have a whole lot of time, I have to leave for school.
I'll just say this, while it may seem, intuitively, that volume is increased (amplified), in this way... it isn't.
Unless new energy can be added to the original sound waves, which are nothing more and nothing less than a product of motion of the reed converted into motion of air, volume cannot be increased.
This is, exactly, related to Tim's (disproven) theories.
Once sound waves reach the end of the pop bottle, or a WT speaker, they spread out in all directions.
At best what you are doing with this method is temporarily, and immensely temporary at that, concentrating the energy of sound.
With sound travelling at somewhere around 700 MILES per hour, it takes just a nanosecond for sound waves to clear these types of bell tubes, and another nanosecond later these sound waves begin to disperse in all directions(and begin to weaken).
Many things in science defy intuition... the world isn't flat, neither the Sun nor the Earth lie at the center of the Universe, the Moon isn't made of Minnesota green cheese, and sound cannot be amplified without the addition of energy.
Krusty
*Edit for grammar and punctuation.
[ October 14, 2010, 07:55 AM: Message edited by: Krustyklimber ]
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Think about how stupid the average person is, then realize that half of them are stupider than that!
Posts: 1912 | From: Deep in the Blue Ridge Mountains of Virginia | Registered: Jan 2003
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Greenside
seems to know what he is talking about
Member # 10
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posted October 14, 2010 08:59 AM
Googled from the web
quote:
Have you ever wondered why simple megaphones amplify your voice so well?
Actually, they work for two different reasons. First, they direct your voice. As sound emerges from your mouth, it travels outward in all directions, going left, right, up, and down, as well as straight ahead. Using a megaphone is a lot like using a funnel–it directs more sound toward your target, and allows less to scatter to the sides.
This is only half the story, though. Megaphones don’t simply aim the sound that you’re already making, they can actually draw more volume from your mouth in the first place. This is because whenever a sound wave moves suddenly from a narrow space to a more open one, some of the sound is reflected backward. This is exactly what happens when the sound of your voice moves from the narrow confines of your mouth into the wide, open air. The abrupt change bounces some of the sound energy backward, where it’s absorbed by your mouth, reducing the overall volume.
A cone-shaped megaphone creates a more gradual transition from your mouth to the open air. By reducing the amount of sound that bounces back into your mouth, this allows more volume to come out. For full effect, a megaphone should be at least as long as the wavelength of the sound it’s amplifying. Human voices have wavelengths up to several feet long, so a professional megaphone, like a cheerleader might use, is also several feet long.
I use the bell that Boddiker used to make and sell. Carlton calls was using them for a while on some of their elk bugles. Bought a couple from critr' call( not cheap) and also a couple Carlton bugles from Bruce Kennedy(Shade Tree) when he had his online store. The bugles where cheaper than what critr'call wanted just for the bell.
They are a thicker than the pop bottles and I think they resonate the sound better than the thinner pop bottles. Another thing a like about them is that I can drop a BB-MB1 from the front and snug it up and use it with the bell.
BTW: Those bells also make a very good hearing aid, at times can work better than cupping your hand behind the ear. Comes in handy once in a while when trying to hear those pups in 10ft tall standing corn. I"m in the midwest and sometime when using them I can even hear the ocean.
Posts: 719 | From: IA | Registered: Jan 2003
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Leonard
HMFIC
Member # 2
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posted October 14, 2010 11:38 AM
Dennis, Bernoulli's Principal makes your argument look weak.
However, even when I was in short pants, I used to take a cardboard tube from a roll of wax paper and "amplify" the shit out of my voice, while annoying everybody in the house. How could I have been so stupid!
Good hunting. LB
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32363 | From: Upland, CA | Registered: Jan 2003
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Rich
2,000th post PAKMAN
Member # 112
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posted October 14, 2010 11:53 AM
"and sometime when using them I can even hear the ocean."
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EXACTLY! And some of you have seen those bikini's that are made from sea shells? Well when you see a girl wearing one of those, if you pick her up and hold her next to your ear, you can actually hear her scream.
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If you call the coyotes in close, you won't NEED a high dollar range finder.
Posts: 2854 | From: Iowa | Registered: Feb 2003
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Rich
2,000th post PAKMAN
Member # 112
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posted October 14, 2010 11:59 AM
I don't know why those megaphones work, but they not only magnify the sound, they actually change the tone of the sound. The length, thickness, and density of said megaphone makes a huge difference. That which is written in books is often quite different from what a man can learn from actual practice in the real world.
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If you call the coyotes in close, you won't NEED a high dollar range finder.
Posts: 2854 | From: Iowa | Registered: Feb 2003
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 14, 2010 01:18 PM
Sorry, but I didn't post this thread to start any arguments with anyone. I just wanted to inform other callers what I have used with my tone boards when howling for coyotes.
Thanks for the information on the megaphones.
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Leonard
HMFIC
Member # 2
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posted October 14, 2010 01:53 PM
Don't worry about it, Steve. These things pop up now and then and lead to stimulating conversation. Not your fault.
Good hunting. LB
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 32363 | From: Upland, CA | Registered: Jan 2003
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Krustyklimber
prefers the bunny hugger pronunciation: ky o tee
Member # 72
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posted October 14, 2010 02:19 PM
Steve,
Absolutely. No need for an apology on your part.
While I may not agree with the terminology, I do not in any way dispute the usefulness of the application of bell tubes for howlers or distress calls.
The calls I make, myself, have graduated bell tubes, in an effort to maintain and focus as much of the sound (energy) created by the reed as possible.
Krusty
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Think about how stupid the average person is, then realize that half of them are stupider than that!
Posts: 1912 | From: Deep in the Blue Ridge Mountains of Virginia | Registered: Jan 2003
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Krustyklimber
prefers the bunny hugger pronunciation: ky o tee
Member # 72
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posted October 14, 2010 02:23 PM
P.S. Leonard,
You and your cardboard tune were annoying, because you were annoying, not because you could defy the laws of physics.
Dennis' information is not 100% correct, nothing can add energy to sound waves already in motion. They are only perishable.
Krusty
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Think about how stupid the average person is, then realize that half of them are stupider than that!
Posts: 1912 | From: Deep in the Blue Ridge Mountains of Virginia | Registered: Jan 2003
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SD Howler
taught Huber everything he knows, but not everything HE knows!
Member # 3669
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posted October 14, 2010 02:26 PM
THANKS Krusty, I was using a system that I feel improved my success with howling and I just wanted to pass it on to other callers.
[ October 14, 2010, 02:50 PM: Message edited by: SD Howler ]
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Steve
Predator Calling
rattler51@pie.midco.net
Posts: 51 | From: SD | Registered: Sep 2010
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Rich
2,000th post PAKMAN
Member # 112
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posted October 14, 2010 02:33 PM
"Dennis' information is not 100% correct, nothing can add energy to sound waves already in motion. They are only perishable."
And if Krusty's information was 100 percent correct, the barrel on the end of a call is there only for looks. College teacher's ain't always right either.
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If you call the coyotes in close, you won't NEED a high dollar range finder.
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