Wildlife Acoustics Bloggers

Jeff King

How Far Can My Microphone “Hear”?

How Far Can My Microphone “Hear”?

Have you ever wondered how far away an animal can be and still be detected by your microphone? This is a question we get very frequently.

The simple answer is that there isn’t a simple answer.

SM2 Yearly Maintenance

SM2 Yearly Maintenance

If you have recorders from the Wildlife Acoustics SM2 family, there are a number of things you should do annually to make sure each is ready for the next recording season:

  • Replace the two AA batteries that run the clock with brand new alkalines. See our past blog post for a trick on how to do this
  • Check that the hex nuts that are around the outside of the various ports are hand-tight. These can sometimes get loose and will allow in water. Never use a wrench to tighten these
  • Check that the white hex shaped vent port is also hand-tight. Again, never use a wrench on this.
  • Look for any visible damage to the SD card slots
  • Look for any signs of water intrusion
  • Check the lid gasket for tears or anything that would interfere with a good seal such as pine needles
  • Update the firmware to the latest available
  • Test your microphones. Acoustic microphones can be tested by creating a manual recording and listening to it. Ultrasonic microphones should be tested using the optional Ultrasonic Calibrator tool available from Wildlife Acoustics
  • Finally, always create test recordings prior to each deployment to verify that the recorder is functioning as expected and all settings are correct.

How to keep your NiMH batteries in top shape!

How to keep your NiMH batteries in top shape!

Now is the perfect time to condition your NiMH batteries to make sure they function optimally in the upcoming recording season.

“Conditioning” is a process available on more sophisticated NiMH chargers that runs the batteries through a series of charge and recharge cycles in order to rejuvenate batteries to a state in which they can hold maximum charge.

The charger we sell on our website, the Maha MH-C808M charger, has this mode available. The Imedion line of low-self-discharge batteries that we sell are recommended to be conditioned after 10 normal charges, or on batteries that have been infrequently used. Please check the manufacturer’s recommendations if you are using another brand of battery.

Wildlife Acoustics is proud to support wildlife conservation efforts

Merlin Tuttle's Bat Conservation Bat Conservation International Bat Conservation Trust Wildlife Habitat Counsil