As well as testing the SM2 in the field, Baker Consultants has this week returned from a lab testing session with Dr Fiona Mathews, lecturer in mammalian biology at Exeter University.

To bench mark the detectors we tested them using an ultra sound generator, broadcasting a range of pre-recorded calls, fixed frequency calibration tests at a number of different volumes, frequency sweeps at increasing distances and angles from the detectors.

Four Anabats, three SM2s and two Duets were used for the experiments.

We will be publishing the full results after the UK national bat conference in September and further testing is to be undertaken during the winter months to validate these original tests.

Fiona is at the international bat conference in Prague this week, Paul will be presenting at the BCT conference at Loughborough in September with our full test results (although last time we checked the organisers were trying to find us a bigger room!).