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BAT DETECTOR MK2 SELF-ASSEMBLY KIT(£40.00)

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.

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BAT DETECTOR MK2B(£55.00)

With a Magenta Bat Detector you can listen to ultrasonic chirps, smacks and clicks from these amazing creatures. Special circuitry detects the human-inaudible sounds emitted by bats and processes them into a form that human hearing can discern. The Magenta MkIIb Bat Detector has been developed from our experience with our popular MkII detector. This new circuit uses the latest components and assembly techniques and adds many new improvements. All the good features of the original are there, including high level audio output, built-in front-facing weatherproof loudspeaker. Murata miniature microphone and 20-130kHz frequency range. And now with: Advanced low noise IC preamplifier stage Improved., high stability heterodyne oscillator New "active filter" audio stage Increased gain and sensitivity Convenient side mounted headphone socket Extra low level output tape recorder socket Front-facing Power On l.e.d. indicator All new circuit board construction and assembly. This device arrives ready built (not available in kit form) and uses modern surface mount components for high stability and reliability.

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BAT DETECTOR MK3(£90.00)

Developed from the popular Mk II range, the Magenta Mk III Digital Quartz Bat Detector has an accurate auto-dimming 3-digit frequency display, a high stability, easily tuned local oscillator together with advanced amplification and filtering. Extended 15-130kHz frequency range; 3 digit high efficiency display; Auto dimming display; Quartz accurate -always calibrated; Built-in front-facing weatherproof speaker;Headphone and tape sockets. This device arrives ready built (not available in kit form) and uses modern surface mount components for high stability and reliability.

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