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Astra 20 is a modern, portable electric current transmitter with the maximum output power of 20 W, ouput voltage of 400 V and output current of 100 mA. It is intended for being used in the frequency-domain resistivity & IP exploration of shallow (up to 50 m) targets, and is controlled from any Android-operated smartphone or tablet via the Bluetooth wireless connection. The output signal is squarewave with the fundamental frequency values from 0.08 Hz to 2 500 Hz.

Astra 20 is powered by an external 12V DC battery.

We have created a special website for Astra family transmitters where you can learn more about them and compare with each other.