This video shows the operation of a homebrew transceiver noise blanker. The demonstration shows the blanker acting on an electric fence pulse picked up by the receiver. The blanker is similar to many used in transceivers prior to the introduction of the SDR radios. This design is based on one by Ulrich Rohde as published in an article titled “understanding and handling noise” in the HR magazine, Nov 1986. More modern components were used, such as the use of an AD603 noise amplifier. But the overall principle of operation was as published in the article. It works at the IF frequency of 9MHz between the RX mixer and the crystal filters.