I'm trying to listen to the CPU freq's my PC produces (kinda similar to what was done here: https://github.com/fulldecent/system-bus-radio)
I do see a clear signal that comes from the CPU (I know that because I can control it by reading memory blocks), however the distance it transmits to is very short (~20 cm).
- Is there anything I can do to see the signal from a greater distance?
- Does it depend on the antenna ? (will a longer antenna produce better results)
- Does the shape of the antenna makes a difference ? (should the wire be folded into a circle or is it better as a long straight wire)
I'm using a random wire antenna (~60 cm long made into a circle)
The dominant signal is at ~300KHz - 450Khz and I'm using SDRPlay2