Amateur Radio Interference

[Phrede]

My A139 Pro 3ch is causing interference with my Amateur Radio when receiving 443.175MHz. It does it on multiple radios, including a HT, which eliminates any power lead or antenna issues. This must be a camera SE problem.

Anyone else? Thoughts?

 

[Dashmellow]

EMF/EMI issues have come up from time to time on the forum over the years with certain cameras and people have tried various fix-its with varying levels of success.

One solution is to take the camera apart and paint the inside of the housing with EMF shielding paint. The stuff is not cheap but can work or at least reduce the problem. You can find it selling in smaller quantities.

https://www.amazon.com/s?k=EMF+pain...6bfdb7ae5bc6d1f30e9e88d9e4e3436d7bfb941a95d0a

Another approach is to use copper foil shielding tape (often used for guitar pick-ups)

https://www.amazon.com/s?k=EMF+copp...6bfdb7ae5bc6d1f30e9e88d9e4e3436d7bfb941a95d0a

or Farady Fabric

https://www.amazon.com/s?k=Farady+F...6bfdb7ae5bc6d1f30e9e88d9e4e3436d7bfb941a95d0a

or Faraday Tape

https://www.amazon.com/s?k=Farady+tape&crid=9NSK2CI8W4KO&sprefix=farady+tape,aps,185&ref=nb_sb_noss_2

 

[rozwell]

Aren't PCBs in A139 almost entirely shielded? That doesn't have to mean they got rid of everything though...

Have you tried moving the camera closer and further to the radio/antenna to see if that makes a difference?
Did you make sure it's not the power supply itself?
I remember having issues with some USB car chargers which caused lots of radio noise and electric interference in car installation.

I'd suggest using some decent power bank (with a short cable, if possible) to power the dash-cam and making sure it's not the power supply itself - you can even walk around to see the range of the problem.