What Causes a Dash Cam to Interfere with the Radio?
3 Answers
A dash cam interfering with radio signal reception is often due to poor power cable contact. Below are specific details about dash cams: 1. Time Options: Dash cams typically offer loop recording settings with options such as 1 minute, 2 minutes, 3 minutes, 5 minutes, 10 minutes, etc. Once a segment is recorded, it moves to the next. 2. Optimal Loop Time: 3 or 5 Minutes: When setting the loop recording time, avoid making it too short or too long. If the recording time is too short, the video will be split into more segments, increasing the chance of dropped frames. Conversely, if the time is too long, fewer videos will be stored, and they will be overwritten quickly. It is recommended to set the loop time to 3 or 5 minutes for optimal performance. 3. Function and Purpose: A dash cam is a device that records images, sounds, and other relevant information during vehicle operation. Once installed, it can capture the entire driving process in video and audio, providing evidence in case of traffic accidents.
I've encountered this issue of dash cams interfering with car radios several times. The root cause is electromagnetic interference. When the dash cam is powered on, it emits electromagnetic waves, especially when the frequency overlaps with the FM radio signal, causing a buzzing sound. The antenna location is also crucial—if the dash cam is installed too close to the radio antenna, it causes direct physical interference. Additionally, low-quality devices with poor shielding design are prone to such problems. Here are the solutions I've tried: First, check if the dash cam is installed far enough from the antenna and try relocating it. Use an original or well-shielded power supply instead of cheap chargers. If the problem persists, consider adding a filter. Also, pay attention to vehicle circuit safety—if the interference is severe, it may affect driving, so it's best to have it checked at a repair shop.
I also noticed that my dash cam and car radio often interfere with each other while driving, mainly due to signal conflicts. When the dash cam is turned on, its wireless signals or power supply electromagnetic waves can clash with the FM band of the radio, causing static noise. Improper installation can worsen the problem, such as placing the dash cam in the middle of the windshield, too close to the radio antenna. My solution is: first, move the dash cam to a side position; try using a high-quality power cable; turn off the dash cam's Wi-Fi function to see if it improves. During regular maintenance, clean the antenna connector to prevent interference. Remember, although this is a common issue, leaving it unresolved can affect in-car comfort, and it can be easily fixed with simple adjustments.
