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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.
|Type:||Heterodyne and time expansion (x10 or x20 - selectable via switch)|
|Frequency range:||10 - 120 kHz (min.)|
|Display accuracy:||±0.15 kHz (min.)|
|Bandwidth:||8 kHz (± 4 kHz), -6 dB|
|Battery:||1 x IEC 6LF22 (9 V)|
|Quiescent current:||30 mA typ. (replay) including LCD backlight|
|Memory size:||1M x 8|
|Sampling frequency:||307 kHz|
|Storage time:||3.4, 1.7 or 0.1 sec. (selectable via switch)|
|Trigger modes:||Manual, level - broadband, level - narrowband|
|Pretrigger:||50% of the selected storage time|
|Size:||119 x 60 x 25 mm including knobs|
|Weight:||170 g including battery|
|Outputs:||2 x 3.5 mm jacks for headphones and tape recorder|
|Miscellaneous:||Overload indicator, adjustable input gain, replay of signal in memory through heterodyne system|
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