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Batcorder 3 Bat Detector

The next generation of autonomous bat recording devices

ecoObs GmbH

Price: £2645.99 - £3519.95
 
187317 | Availability: Usually dispatched within 1-2 months Details
NHBS Price: £2,645.99 inc VAT $3327/€3151 approx
227406 | Availability: Expected dispatch within 3-4 days Details
NHBS Price: £3,519.95 inc VAT $4426/€4191 approx

About this product

To find out how the Batcorder System works, watch the 6 minute demonstration video. This video will revolutionise your bat work! CLICK HERE TO WATCH THE VIDEO

The Batcorder 3 is the first worldwide data recorder that distinguishes bat calls from other sound sources in real-time (online signal analysis). Calls are recorded digitally as call sequences. Thus, bat calls can easily be sampled automatically at nearly every possible location. Bush crickets and other sounds (e.g. wind, water, rustling of leafs) are under most circumstances not recorded at all. The batcorder was developed specifically to be used as an autonomous recording device in the field. It is not a conventional bat detector, and bat calls are not played over headphones or a loudspeaker. In contrast to other such devices, each batcorder and its microphone are calibrated for a fixed sensitivity. Thus, the comparison of activity recorded at different locations and with different detectors is guaranteed.

Recordings are stored on an SDHC card, with the batcorder sampling sound at 500 kHz with 16 Bit amplitude resolution. Thus, it uses 1 MB of memory per second of sound recording. A SDHC card of 16 GB of memory allows you to store around 15,000 typical bat recordings (each with approximately one second of duration). This is sufficient for activity sampling of 5 to 20 consecutive nights at most ground based locations. When recording on wind turbines, recordings of more than 30 days usually fit onto a 16GB SDHC card.

The batcorder is optimized for autonomous usage and its casing is IP65 weatherproof. Through intelligent algorithms and low-power consuming parts, the batcorder reaches run-times of up to 100 hours with the supplied, external NiMH battery pack (6V / 2.7 Ah). This typically resembles 6 to 10 nights of usage in Auto + Timer mode.

The Batcorder 3 features include;
* Calibrated sensitivity allows comparison of measurements of bat activity.
* High quality recordings (500 kHz / 16 bit) enable proper differentiation even of difficult species like Myotis.
* Unique algorithm recognizes bat calls.
* Programmable timer, threshold and trigger.
* Ergonomic and easy to use interface.
* Log file with all relevant recording information enables subsequent automatic import of the data.

Operational Settings
More details on the Batcorder can be found in the Batcorder Manual. To download a copy of the manual, please see the Specifications tab. The Batcorder can be used in three different recording settings;

Auto + Timer Mode
The batcorder starts up at a user-chosen time (usually in the evening), and starts a recording when it encounters a valid call event. It then saves the incoming sound for as long as further calls are recognized within a chosen time interval (post-trigger time). At a user-chosen time (usually in the morning) the batcorder stops sampling again and shuts down to save battery power.

Auto Mode
This mode is equivalent to the Auto + Timer mode, but the scanning for calls has to be initiated manually. The timer is deactivated and the batcorder runs until switched off again.

Manual Mode
In this recording mode the call recognition algorithm is deactivated. Recordings are started / stopped manually by pressing the Rec key.

Passive Monitoring
The batcorder is optimized for passive monitoring of bat activity. Its easy deployment and long runtime of up to ten nights makes it an ideal tool for consultants and scientists. The high omnidirectionality of the microphone and the good signal-to-noise ratio results in high quality full-spectrum recordings of bat calls. This allows the automated analysis of recordings, one of the necessities of passive monitoring due to the often large amounts of recordings.

Sound Format
Sound recordings are written as raw audio files. These files can be read with any sound software that is capable of opening raw files, including Batsound.

Find out about the key benefits of the Batcoder System here

For a brief introduction to the Batcorder system, check out the NHBS blog.

To buy the Batcorder together with bcAdmin 3.0, please select the appropriate item from the drop-down list above.

 

I am a senior lecturer in Biology at the University of Bristol working in bioacoustics. For the last four years I have been using ecoObs Batcorders for bat monitoring in the field with great success. I have chosen this system because of the quality of the recordings, which are full 16 bit 500 kHz real time. Recording full information helps to identify calls of low amplitude and also allows call analysis and automatic species identification at an advanced level (I use AVISOFT SASlab Pro and have not used the Ecoobs Batcorder automatic identification software yet because it only covers Europe and because I do not have a Mac. I have seen it perform though and was impressed). The downside of recording in full quality is that the data volume is rather high, but then hard drives have become so affordable that this is no issue anymore. The biggest memory card I have used is 16GB (can handle more), which is enough for thousands of bat passes. The setup in the field is very straightforward, the hardware is sturdy, reliable and comes camouflaged. Like comparable systems it triggers automatically upon reception of a passing bat. What has turned out to be extremely useful is its automatic noise rejection, which means it will not trigger if it picks up an insect, but it does recognise all bats! This feature really works and prevents filling the memory card with bushcricket song in summer. The batcorder is powered from rechargeable batteries which last several nights (depending on outside temperature and age and also on how many hours per night you program it to switch on). I also frequently use it as a handheld recorder. It is not a bat detector though so don't expect a headphone output. In summary, the features of the batcorder hardware make it my first choice for acoustic monitoring of bats and it always works even after three long seasons in the Negev desert.

Dr Marc Holderied
Bristol University Bat Ecology and Bioacoustics Lab


Specification

The Batcorder includes;
Batcorder
Omnidirectional microphone and extender
Camouflage cordura case for batcorder
Echo-absorber cloth (to minimise echos reflected by the batcorder)
Battery pack (NiMH 6V / 2.7Ah)
Camouflage cordura case for battery pack
Charger (110-240V) and adaptor lead
Cable to connect batcorder and battery pack
Instruction manual
Protective carry case with foam inserts for all items listed above

Measurements
Batcorder (excluding microphone): 190mm H x 105mm W x 32mm D (weight: 460g)
Microphone: 225mm long
Battery pack: 102mm H x 80mm W x 22mm D (weight: 295g)
Batcorder to battery pack cable: 300mm long

Specifications
* Sample rate: 500 kHz
* Dynamic range: 16 bit (96 dB)
* Call detection: online-analysis (quality + threshold selectable)
* Recording modus (selectable): automatic (2 Modi), manual
* Microphone: electret
* Frequency range (recorded range): 16 kHz - 150 kHz, bandpass each 10th order
* Omnidirectionality: high
* Flash memory: SDHC-Card ( 4 to 32 GB)
* Post-trigger: 0/200/400/600/800 ms
* Pre-trigger: 50 ms
* Robustness: IP65 (excludes microphone)
* RS232 interface: allows communication with third-party devices (e.g. GPS)
* Power consumption: ca. 0.25 Watt
* Power supply: 6V, 2.6 Ah (NiMH)
* Runtime: 7 to 10 nights in timer mode (battery pack provides power for up to 100 hours operating time).

Please note, does not come with an SD card.

To download a PDF of the Batcorder Manual, click here.


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Protection

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Power Options

Batcorder Box Extension With Solar Panels

Use the Batcorder Box Extension to provide long-term power and protection for your Batcorder - this version comes with solar panels which will recharge the Batcorder after each night of recording

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Batcorder Box Extension Without Solar Panels

Use the Batcorder Box Extension to provide long-term power and protection for your Batcorder

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Batcorder Battery Pack

A replacement 6V 2.7Ah battery pack

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Batcorder Charger Cable (Connects Battery Pack To Charger)

This cable connects the battery pack to the charger

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Batcorder Power Cable (Connects Batcorder 2 to 12V Batteries)

This cable connects the Batcorder to an external 12V battery

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Batcorder Power Cable (Connects Batcorder to Battery Pack)

This cable connects the Batcorder to the battery pack

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Batcorder Charger (To Charge Battery Pack) UK and Ireland

A charger for the battery pack fitted with a U.K. plug

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Batcorder Charger (To Charge Battery Pack) Europe

A charger for the battery pack fitted with a European plug

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Batcorder Charger (To Charge Battery Pack) Global (Type A plug)

A charger for the battery pack fitted with a Global A plug - this will work in the USA, Canada and Japan

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