Raspberry Pi RFI ??

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1

Being an Amateur Radio Operator had a local 10 meter net on 28.470Mhz and noticed a strong carrier on 28.472Mhz. Unfortunately the Pi and the dongle antenna are not too far from the dipole I was using. Shutting off the Pi got rid of the problem!

Anyone else noticed this? I suspect that the Pi being totally unshielded is problematic.

2

Yes very wide band interference around 28.500MHz and you will find on transmit of course the dongle ceases to work.

3

The dongle has a 28.8MHz oscillator - you may be seeing leakage from there rather than from the Pi itself.

4

I have found HDMI cables to be a great source of RFI. No problems if you are running headless.