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{"id":110408728603,"title":"Pettersson D200","handle":"pettersson-d200","description":"\u003cp\u003e\u003cspan class=\"style310\"\u003eThis quality heterodyne bat detector features a large LCD displaying the center of the tuned frequency in kHz. The detector in real time plays any ultrasound that is approximately 4 kHz above and below the tuned frequency.This method works by frequency subtraction and only a very narrow part of the spectrum is scanned at any given time, so a tremendous amount information is not detected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003eHeterodynes produce low quality analog output that is not used for detailed computer analysis. However, many people are able to discern different species with practice in areas where there is little overlap in call frequencies. For example, a bat heard best at 19 kHz in the eastern US is most likely a hoary bat, as calls of other species typically calls do not go that low.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003eSimilarly, an experienced user may be able to group calls by genus, suitable for interpreters doing bat walks, or bat enthusiasts looking for a low cost acoustic detector. Tone qualities of the output change if the bat is calling above or below the present frequency of the detector. This enables users listening in real time to rapidly \"tune into\" the bat as it flies by and get a good estimate of the bat's dominant frequency, the basis for species identification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003ePlease note: heterodyne detectors -are not- intended for computer analysis and precise species identification. They can be used for passage rates at mine entrances, etc.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: #38761d;\"\u003eAvailable In Stock, \u003cem\u003eUsually Ships 1-2 Days\u003c\/em\u003e\u003c\/span\u003e\u003c\/h3\u003e","published_at":"2017-09-21T15:04:57-04:00","created_at":"2017-09-21T15:06:43-04:00","vendor":"Pettersson Elektronik","type":"Bat Detector","tags":["Active"],"price":39500,"price_min":39500,"price_max":39500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":1181222830107,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"PT200","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pettersson D200","public_title":null,"options":["Default Title"],"price":39500,"weight":227,"compare_at_price":null,"inventory_quantity":3,"inventory_management":"shopify","inventory_policy":"deny","barcode":""}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/2378\/9221\/products\/pettersson2002a2.gif?v=1506020804","\/\/cdn.shopify.com\/s\/files\/1\/2378\/9221\/products\/pettersson2001b.gif?v=1506020805"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/2378\/9221\/products\/pettersson2002a2.gif?v=1506020804","options":["Title"],"content":"\u003cp\u003e\u003cspan class=\"style310\"\u003eThis quality heterodyne bat detector features a large LCD displaying the center of the tuned frequency in kHz. The detector in real time plays any ultrasound that is approximately 4 kHz above and below the tuned frequency.This method works by frequency subtraction and only a very narrow part of the spectrum is scanned at any given time, so a tremendous amount information is not detected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003eHeterodynes produce low quality analog output that is not used for detailed computer analysis. However, many people are able to discern different species with practice in areas where there is little overlap in call frequencies. For example, a bat heard best at 19 kHz in the eastern US is most likely a hoary bat, as calls of other species typically calls do not go that low.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003eSimilarly, an experienced user may be able to group calls by genus, suitable for interpreters doing bat walks, or bat enthusiasts looking for a low cost acoustic detector. Tone qualities of the output change if the bat is calling above or below the present frequency of the detector. This enables users listening in real time to rapidly \"tune into\" the bat as it flies by and get a good estimate of the bat's dominant frequency, the basis for species identification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"style310\"\u003ePlease note: heterodyne detectors -are not- intended for computer analysis and precise species identification. They can be used for passage rates at mine entrances, etc.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: #38761d;\"\u003eAvailable In Stock, \u003cem\u003eUsually Ships 1-2 Days\u003c\/em\u003e\u003c\/span\u003e\u003c\/h3\u003e"}
Product Description

This quality heterodyne bat detector features a large LCD displaying the center of the tuned frequency in kHz. The detector in real time plays any ultrasound that is approximately 4 kHz above and below the tuned frequency.This method works by frequency subtraction and only a very narrow part of the spectrum is scanned at any given time, so a tremendous amount information is not detected.

Heterodynes produce low quality analog output that is not used for detailed computer analysis. However, many people are able to discern different species with practice in areas where there is little overlap in call frequencies. For example, a bat heard best at 19 kHz in the eastern US is most likely a hoary bat, as calls of other species typically calls do not go that low.

Similarly, an experienced user may be able to group calls by genus, suitable for interpreters doing bat walks, or bat enthusiasts looking for a low cost acoustic detector. Tone qualities of the output change if the bat is calling above or below the present frequency of the detector. This enables users listening in real time to rapidly "tune into" the bat as it flies by and get a good estimate of the bat's dominant frequency, the basis for species identification.

Please note: heterodyne detectors -are not- intended for computer analysis and precise species identification. They can be used for passage rates at mine entrances, etc.

Available In Stock, Usually Ships 1-2 Days

$395.00
Maximum quantity available reached.

QUESTIONS & ANSWERS

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  • Will your D200 detect a signal from a high frequency speaker that will reproduce frequencies in the audio range of l0Khz up to 50KhZ. Specifically in the 25 to 40 Khz range. These higher frequencies can be heard by dogs as you know. If the D200 will not do this can you recommend a unit that will. I have a serious problem with HF noise generated by a Signal Generator such as a HP Model 200AB Audio Oscillator. l Hope you can help me. Regards, Mike Day

    Hello Mike - Yes the D200 will easily detect your signals of interest. As a tunable heterodyne, you would tune it yourself to "zero in" on the sound, and then the D200 will be displaying the tuned frequency. Some other options are the BatScanner which reports the frequency of the loudest ultrasound present. But you might be most interested in the the USB microphones... the Pettersson M500, u256, and u384 run on included software BatSound Touch that would let you monitor sound in real time on a live sonogram. Those devices are compatible with other sound apps such as Audiacity, and smartphone apps like BatRecorder. All of which provide live sonograms so as your sound changes, you can see it in realtime. The Binary Acoustics AR125 is expensive with excellent quality and may be more than you need. Thanks-JC

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