This interesting and absorbing kit helps to detect and alert humans to the presence of bats. It is a "heterodyne" circuit which mixes a tuneable oscillator with ultrasound emitted by bats, to produce an audible output. Thus the ultrasonic squeeks of bats (which are inaudible to human beings) are processed to generate audio signals which the human ear can detect.
This excellent design is very successful and gives outstanding performance. It is used throughout Europe by Bat Enthusiasts, Conservation Groups and Naturalists. The kit is now supplied with a punched case and a laminated self-adhesive label.
It has a powerful audio output (1 watt) making it ideal for group use, and an earphone socket is provided as well. Entertaining and fascinating, the kit includes full assembly instructions. Soldering and practical assembly skills are required to put this kit together successfully.
