Tikker Detector ED37

This is a Telefunken Tikker (or Schleifer)-type Wireless Detector circa 1914 which is used to receive Continuous Wave (CW) signals. It operates by rotating a Brass disk using a clockwork mechanism while trailing or dragging a Gold wire on the Brass disk as the disk rotates. The clockwork is similar to that used in a Marconi Magnetic Detector. In this case, when a CW signal is being received, a “grinding” noise is heard in the phones. Thus it was sometimes referred to as a Grinder instead of a Tikker. However, this detector falls into the Tikker class of wireless detectors.