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Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8680966 09/04/22 10:38 PM
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thermal time Offline
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Perhaps you can explain how you make up for this ;

[Linked Image]

Taken from this; https://en.wikibooks.org/wiki/Engineering_Acoustics/Outdoor_Sound_Propagation

I just don't see how those very high frequencies can travel very far.


He's a perfect stranger like a cross of himself and a fox.
He's a feeling arranger and a changer of the ways he talks.
He's the unforeseen danger and the keeper of the key to the locks.
Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8681235 09/05/22 01:45 PM
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gary roberson Offline OP
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I am no scientist but we do know that the silent dog whistles are effective to approximately 500 yards in most conditions. I feel the reason that so many coyotes hold up in the 200-300 yard range when using standard e-callers is because they are not hearing the high frequencies that occur in nature.
Adios,
Gary

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8681396 09/05/22 06:11 PM
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Originally Posted by gary roberson
I am no scientist but we do know that the silent dog whistles are effective to approximately 500 yards in most conditions. I feel the reason that so many coyotes hold up in the 200-300 yard range when using standard e-callers is because they are not hearing the high frequencies that occur in nature.
Adios,
Gary

A very useful observation to point out, indeed. Ten years ago I did some playing around with some 40KHz ultrasonic transducers but for a completely different reason. I was trying to locate faulty power line hardware on power poles. I mounted a transducer at the focal point of a parabolic dish about 1ft in diameter. Built up a buffer amplifier for the transducer so I could connect it to the input of a RFSpace SDRIQ Software Defined Radio. This allowed me to view the spectrum and AM demodulate what the transducer was hearing on a small laptop. Well after playing around with this device it was quite interesting to hear the amount of ultrasonic noise emitted by automobile, ATV and bicycle tires as they move over roadways. This ultrasonic noise drives dogs crazy enough to want to rip a tire off it's rim. As a kid growing up there was one street all us kids would not ride our bikes down. There was this German Shepard that would grab our bicycle tire and shred it. That kind of event you never forget but never understood why at the time. I suspect it's the high frequency sound that allow predators to precisely locate their prey as well especially with their stereoscopic detection. With this device I was also able to hear bugs buried underground. I suspect hogs can hear in this frequency range as well. Sound like a load of fun project. Let's go hunt sometime.


He's a perfect stranger like a cross of himself and a fox.
He's a feeling arranger and a changer of the ways he talks.
He's the unforeseen danger and the keeper of the key to the locks.
Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8682148 09/06/22 05:01 PM
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You are so correct on most everything producing ultrasonics. They claim that mice and small rodents scratching under deep snow actually produce ultrasonic sounds that enable foxes and other predators to locate them. If it wasn't for this ability, the fox might not survive in harsh winters. If memory serves me correctly, hogs hear over 40 khz, not sure if they use their noses or hearing more. I guess it depends on what they are hunting.
Adios,
Gary

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8695504 09/25/22 06:10 PM
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I check this post about once a week for updates.

Re: Strange Things I am Seeing with the Ultrasonics [Re: CaveManRancher] #8700915 10/03/22 05:04 PM
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Originally Posted by CaveManRancher
I check this post about once a week for updates.


Me too...I keep refreshing the Burnham Bros page as well on a weekly basis

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8702167 10/05/22 01:40 PM
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Supposed to have approximately 2500 in here about the end of the month. I won't be able to satisfy all the demand but at least it's a start. After nearly 5 years of R&D and 6 patents, I am ready to see a return on investment.
Thanks for all your patience!
Gary

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8702172 10/05/22 01:46 PM
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That's great news Gary! Can't wait to see some of these go out in the field and start getting customer feedback. I'm sure its been a long road and I bet you're happy to finally be at this point in the journey. up

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8703504 10/07/22 01:44 PM
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Yea, I am about broke!!! All of the money spent on R&D and attorneys with no return is a killer. At one time last year I realized that I had four different attorneys working on four different projects...Yuk!
I agree that I want to see them in the field as they are definitely a gamechanger. I have been using them for three years and yet to have a coyote warning bark at me.
Adios,
Gary

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8705709 10/10/22 07:52 PM
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Would really like to try one of these out on ours that have proven caller-shy.


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https://web.archive.org/web/20170223065011/http:/www.rrdvegas.com/silencer-cleaning.html
Re: Strange Things I am Seeing with the Ultrasonics [Re: QuitShootinYoungBucks] #8707317 10/12/22 08:26 PM
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Yeah I have several places I’d like to try it out at. Coyotes in my area are pretty smart

Re: Strange Things I am Seeing with the Ultrasonics [Re: CaveManRancher] #8707435 10/12/22 11:09 PM
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You all had better have a box full of tools for coyotes. No one thing has ever or will ever be the crown jewel.


He's a perfect stranger like a cross of himself and a fox.
He's a feeling arranger and a changer of the ways he talks.
He's the unforeseen danger and the keeper of the key to the locks.
Re: Strange Things I am Seeing with the Ultrasonics [Re: thermal time] #8709187 10/15/22 12:55 PM
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2 trappers, multiple helicopters, thermal guns, monoculars and a new thermal drone. Found them the first time I took it up. Trappers got one on a gun but then I think they got boogered. Hoping next time I can just pattern them and then find them morning the helo shows up.

Re: Strange Things I am Seeing with the Ultrasonics [Re: CaveManRancher] #8709278 10/15/22 04:04 PM
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Originally Posted by CaveManRancher
2 trappers, multiple helicopters, thermal guns, monoculars and a new thermal drone. Found them the first time I took it up. Trappers got one on a gun but then I think they got boogered. Hoping next time I can just pattern them and then find them morning the helo shows up.

Yep coyotes are the smartest thing I have ever tried to hunt. Seems as though if one gets educated they tell the whole world about it through their primitive networking. If it don't sound, smell or taste right then a red flag goes up. I have called and have them go down wind say 100 or more yards of me with their nose up in the air sniffing and their tongue out licking the air. One aspect no one ever talks about is their sense of taste. Same goes for deer or hogs. Long after you have left your stand and your smell has faded they can taste your presence for a long time.


He's a perfect stranger like a cross of himself and a fox.
He's a feeling arranger and a changer of the ways he talks.
He's the unforeseen danger and the keeper of the key to the locks.
Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8719261 10/27/22 10:45 AM
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“Taste your presence”?


Without a sense of urgency, nothing ever happens.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley, Rancher Muleshoe Texas 1892-1985 RIP
Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8732032 11/11/22 03:57 PM
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Any day now boys!

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8733381 11/13/22 06:20 PM
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It's like bigfoot and the lochness monster so far

Re: Strange Things I am Seeing with the Ultrasonics [Re: doggit] #8733831 11/14/22 02:54 PM
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LOL!!! Yes, it is! I can promise you it will be worth the wait, it is a game changer.
Adios,
Gary

Re: Strange Things I am Seeing with the Ultrasonics [Re: gary roberson] #8741678 11/24/22 05:59 PM
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It would make a great Christmas present

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