Pettersson D230 bat 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.
 
Additional information
Weight
160 g
Dimensions
119 × 60 × 25 mm
Type
Heterodyne and frequency division
Microphone
Electret
Frequency range
10-120 kHz (min.)
Display accuracy
± 0.15 kHz
Bandwidth
8 kHz (+/- 4 kHz), -6 dB
Battery
1 x IEC 6LF22 (9V)
Quiescent current
23 mA typ. including LCD backlight
Outputs
2 x 3.5 mm jacks for headphones and recorder