# Electrical Noise Some ROV propulsion systems create electrical noise that can disrupt ROVL reception on an ROV. This might affect a Mk III ROVL Transponder or any of the ROVL Receivers or Transceivers mounted on an ROV or AUV. Electrical noise is a likely cause of symptoms where the system works fine when at rest, but degrades when the ROV is moving. Often the worst effects are when the ROV is running at half power. If you suspect you are having electrical noise problems, contact us at Cerulean Sonar. There is a simple solution that may clear up the problem completely. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ceruleansonar.com/c/rov-locator/rovl-mounting-and-wiring/electrical-noise.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.