NVS 7-3/8xAG

D500X Ultrasound Detector/Recorder Mk II

The D500X Mk II is as easy to use and provides the same features as the classic D500X, with the following exceptions:

• It does not include an internal microphone. Instead it ships with an external microphone which is either directly connected to the microphone jack or through an extension cable. The microphone jack is an XLR type so no adapter cable is required.
• It is powered by 4 C type batteries which last roughly three times longer than the AA batteries used in the classic D500X.
• The jack for external power is a standard 2.5 mm DC power jack for easy connection.

• Description
• Additional information

The D500X is an ultrasound recording unit intended for long-term, unattended recording of bat calls. In contrast to time expansion bat detectors, the D500X records full-spectrum ultrasound in real time with virtually no gaps between recordings. The recorder is equipped with four slots for CF cards, which typically makes it possible to leave the unit in the field for more than a month. The triggering system allows the device to automatically start recording as a sound is detected.

D230 Ultrasound Detector

A combined heterodyne and frequency division detector with backlit, large digit, accurate digital display, showing the tuned frequency in the heterodyne mode. The frequency and volume controls are on the side of the case, making it easy to adjust. Using stereo headphones, the heterodyne signal is heard on the left channel and the frequency division signal on the right channel. When the built-in speaker is used, a switch is used to select the heterodyne or frequency division signal.

D500X Ultrasound Detector/Recorder Mk I

The D500X is an ultrasound recording unit intended for long-term, unattended recording of bat calls. In contrast to time expansion bat detectors, the D500X records full-spectrum ultrasound in real time with virtually no gaps between recordings. The recorder is equipped with four slots for CF cards, which typically makes it possible to leave the unit in the field for more than a month. The triggering system allows the device to automatically start recording as a sound is detected.

D240x Ultrasound Detector

Very popular heterodyne and time expansion detector with backlit, large digit, accurate digital display, showing the tuned frequency in the heterodyne mode. The frequency and volume controls are on the side of the case, making it easy to adjust. Using stereo headphones, the heterodyne signal is heard on the left channel and the time expansion signal on the right channel. When the built-in speaker is used, a switch is used to select the heterodyne or time expansion signal.

A digital recorder can be connected to the D240X to record the time expanded calls for analysis on a PC. If the recorder has a “voice activated” recording mode, a fully automatic bat recording system is obtained, which can be left in the field for unattended recording of bat calls.