I have bought a cheap dashcam to play with, only to discover that my GPS receiver stops working when it’s on. After I ruled out power supply issues (both devices have batteries), I’m left with a hypothesis that the dashcam produces EMI interfering with GPS carries frequencies (1.2-1.5 GHz).
Before I start wrapping my head the dashcam in tinfoil, I want to have an actual measurement of the interference I’m facing. Unfortunately, all I have at home is a multimeter and a toy oscilloscope, in no way capable of GHz measurements. I’m thinking about making some sort of antenna probe for my measurements:
simulate this circuit – Schematic created using CircuitLab
Is this approach realistic? Is there a way to reliably tune it to the frequency range of interest?