 |  Heterodyne Bat Detectors
Very good for beginners and the best for immediate identification of bats in the field. Select the frequency range to listen to rather like tuning in to a radio station. Most heterodyne detectors have a headphone socket and line out for recording calls. |
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 | Frequency Division Bat Detectors
Detects all frequencies at once, so you won't miss a bat by listening to the wrong frequency. Real time recording of bat calls. Frequency division detectors can be used for sound analysis of recorded calls. |
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 | Time Expansion Bat Detectors
Time expansion digitally records the sound, then plays it back at a slower speed so you can hear details of the sound not normally audible. Near real time recording of bat calls and computer based sound analysis. Time expanded calls produce the highest quality sonograms. |
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 | Bat Detector Sound Recordings
CDs of the different types of call made by each species are available to help identification. You can record bat sounds directly from most detectors to tape, DAT or minidisc. Using frequency division and time expansion detectors you can also analyse the sounds using PC software |
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 | Bat Detector Information
Introduction to bat detectors, FAQs, glossary, making bat detector recordings, guide to analysing recordings |
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