Get all the ultrasound
coming to you

Bat detectors enable you to hear the otherwise inaudible ultrasonic calls of the bats. The Pettersson 240x uses time expansion technology to hear details of the sound not audible with other recording methods. Time expansion is also the only technique that preserves all characteristics of the original signal, making time expanded signals ideal for seeing the subtle difference between the similar sounds of rare Indiana and Eastern small-footed bats. We also offer the Pettersson D200 hetrodyne detector suitable for interpreters and backyard bat watchers.

Turbocharged
call analysis

SonoBat software provides a comprehensive tool for analyzing and comparing high-resolution full-spectrum Sonograms of echolocation calls recorded from time-expansion bat detectors. With its intuitive and direct interface, SonoBat makes it easy to record, process, display, and analyze calls with great sophistication. SonoBat lets you append library reference calls to a call sequence or individual call and display them on the same sonogram at identical time and frequency scales– no opening of other call files in separate windows and manipulating them to make a comparison.

Digital mistnet
in your pocket

Record high quality bat calls from your Pettersson 240x bat detector without being chained to a laptop. Digital Recorders are coveted by 240x owners for it's line level recording, 44 kHz sampling rate, reliability, and minimal battery requirements. Record voice notes right after a bat recording. We cannot tell the difference from a file recorded with a modern digital recorder and one recorded directly into a laptop. Perfect for one night of unattended acoustic monitoring or increasing your sampling coverage with multiple detectors with minimal extra gear. The current recorder choice is the Samson Zoom H2.

Road map of the night

BatCallsDVD is our road map to the wild world of acoustic analysis. This is a collection of bat calls recorded directly into a laptop using a Pettersson 240x and the SonoBat software from 2004 to the present..This collection gives anyone in the Northeast a huge jumpstart in building their own call library. We include hundreds of full call sequences from common species, including handfuls of calls from threatened and endangered animals. Call analysis can be a subjective art that is only as good as the observer. Only by spending the time reviewing hundreds of calls will the unusual ones really stand out. With BatCallsDVD, next season you can hit the ground running. Includes Grey bats from Coach Cave, KY, and Indiana bats from NY, PA, and IA.